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Electrical Center Identification Views

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: X50D Fuse Block - Battery Top View
GM2354594Courtesy of GENERAL MOTORS CORP.
Fig 2: X50A Fuse Block - Underhood Label
GM2439335Courtesy of GENERAL MOTORS CORP.
X50A FUSE BLOCK - UNDERHOOD FUSE AND RELAY IDENTIFICATION LEGEND

No. Device Label Name Fuse And Relay Description Rating Circuits
1 ECM_BATT Fuse F1UA Fuse 10A K20 Engine Control Module
2 TCM_BATT Fuse F2UA Fuse 20A Q8 Control Valve Assembly (MH2 or MH4), K71 Transmission Control Module (MXE)
3 GLOW PLUG/MAF Fuse F3UA Fuse 5A B75 Mass Air Flow Sensor (LAU)
4 AFTERBOIL PUMP Fuse F4UA Fuse 10A G8 Coolant Pump - Auxiliary (LAU)
5 ECM_RUN_CRNK Fuse F5UA Fuse 10A K20 Engine Control Module
6 WIPER Fuse F6UA Fuse 30A KR12B Windshield Wiper Relay, KR12C Windshield Wiper Speed Control Relay
7 02 POST Fuse F7UA Fuse 15A B52B Heated Oxygen Sensor 2 (LAU), B52D Heated Oxygen Sensor - Bank 1 Sensor 2 (LF1), B52F Heated Oxygen Sensor - Bank 2 Sensor 2 (LF1)
8 02 PRE Fuse F8UA Fuse 15A B52A Heated Oxygen Sensor 1 (LAU), B52C Heated Oxygen Sensor - Bank 1 Sensor 1 (LF1), B52E Heated Oxygen Sensor - Bank 2 Sensor 1 (LF1), Q12 Evaporative Emission Purge Solenoid Valve, B75B Mass Air Flow/Intake Air Temperature Sensor (LF1), Q6A Camshaft Position Actuator Solenoid Valve - Bank 1 Exhaust (LAU), Q6C Camshaft Position Actuator Solenoid Valve - Bank 2 Exhaust (LAU), Q6B Camshaft Position Actuator Solenoid Valve - Bank 1 Intake (LAU), Q6D Camshaft Position Actuator Solenoid Valve - Bank 2 Intake (LAU), Q42 Turbocharger Wastegate Solenoid Valve (LAU), Q40 Turbocharger Bypass Solenoid Valve (LAU)
9 ECM_PWR/TRN Fuse F9UA Fuse 20A K20 Engine Control Module
10 INJ EVEN Fuse F10UA Fuse 20A T8B Ignition Coil 2, T8D Ignition Coil 4, T8F Ignition Coil 6, Q17B Fuel Injector 2, Q17D Fuel Injector 4, Q17F Fuel Injector 6
11 INJ ODD Fuse F11UA Fuse 20A T8A Ignition Coil 1, T8C Ignition Coil 3, T8E Ignition Coil 5, Q17A Fuel Injector 1, Q17C Fuel Injector 3, Q17E Fuel Injector 5
12 VACUUM PUMP Fuse F12UA Fuse 20A KR14 Brake Booster Pump Motor Relay
13 WASHER Fuse F13UA Fuse 20A KR11 Windshield Washer Pump Relay, KR6 Rear Window Washer Pump Relay
14-15 - - - Not Used
16 IPC_MIL_IGN Fuse F16UA Fuse 5A P16 Instrument Cluster
17 SENS AIR QUAL Fuse F17UA Fuse 10A K33 HVAC Control Module, A10 Inside Rearview Mirror (DD8), B108 Air Quality Sensor (UEC)
18 HDLP WASH Fuse F18UA Fuse 15A G16 Headlamp Washer Fluid Pump
19 TCM_RUN_CRNK Fuse F19UA Fuse 20A Q8 Control Valve Assembly (MH2 or MH4), K71 Transmission Control Module (MXE)
20 REC_RUN_CRNK Fuse F20UA Fuse 20A F36R, F37R, F38R Fuses
21-22 - - - Not Used
23 HTR MTR F23UA Fuse 25A Not Used
24 ABS PUMP Fuse F24UA Fuse 40A K17 Electronic Brake Control Module
25 RBEC_1 Fuse F25UA Fuse 60A F2DA, F9DA, F10DA F11DA, F23DA, F32RA, F34RA, F38RA, F50RA, F41RA, F12RA, F35RA, F52RA, F8RA, F28RA, F20RA, F19RA, Fuses, F13RA, F14RA Circuit Breakers, KR104A Logistic Mode Relay 1, KR81 Auxiliary Battery Run Relay, KR5 Rear Defogger Relay, Trailer Park Lamp Relay
26 RBEC_2 Fuse F26UA Fuse 60A F2DA, F9DA, F10DA F11DA, F23DA, F32RA, F34RA, F38RA, F50RA, F41RA, F12RA, F35RA, F52RA, F8RA, F28RA, F20RA, F19RA, Fuses, F13RA, F14RA Circuit Breakers, KR104A Logistic Mode Relay 1, KR81 Auxiliary Battery Run Relay, KR5 Rear Defogger Relay, Trailer Park Lamp Relay
27-29 - - - Not Used
30 SWC BKLT Fuse F30UA Fuse 2A S70L Steering Wheel Controls Switch - Left, S70R Steering Wheel Controls Switch - Right
31 - - - Not Used
32 BATT SENSE (RVC) Fuse F32UA Fuse 5A K9 Body Control Module
33 MDL- AFL/AHL Fuse F33UA Fuse 10A K28 Headlamp Leveling Control Module (TT6 or TT7 or TT8)
34 BCM 7 Fuse F34UA Fuse 15A K9 Body Control Module
35 EBCM Fuse F35UA Fuse 30A K17 Electronic Brake Control Module
36-40 - - - Not Used
41 Cooling Fan 2 F41UA Fuse 60A KR20 Cooling Fan Medium Speed 1 Relay
42 STARTER Fuse F42UA Fuse 40A KR27 Starter Relay
43 GLOW PLUG BAT 2 Fuse F43UA Fuse 60A Not Used
44 GLOW PLUG BAT 1 Fuse F44UA Fuse 60A Not Used
45 Cooling Fan 1 F45UA Fuse 60A KR20D Cooling Fan High Speed Relay, KR20C Cooling Fan Low Speed Relay
46 LO BEAM - RT Fuse F46UA Fuse 20A E4H Headlamp - Right Low Beam
47 LO BEAM - LT Fuse F47UA Fuse 20A E4G Headlamp - Left Low Beam
48-49 - - - Not Used
50 FRONT FOG LAMP Fuse F50UA Fuse 15A E29LF Fog Lamp - Left Front, E29RF Fog Lamp - Right Front
51 HORN Fuse F51UA Fuse 15A P13 Horn Assembly
52 FSCM Fuse F52UA Fuse 10A K27 Fuel Pump Control Module
53 HDLP LVL Fuse F53UA Fuse 10A S30 Headlamp Switch, M29L Headlamp Leveling Actuator - Left, M29R Headlamp Leveling Actuator - Right
54 SDM - IGN Fuse F54UA Fuse 5A K36 Inflatable Restraint Sensing and Diagnostic Module, P14 Passenger Air Bag Disable Indicator (without ASP)
55 HI BEAM - RT Fuse F55UA Fuse 10A E4F Headlamp Right High Beam (without TT6 or TT7 or TT8), M28R High Beam Solenoid Actuator - Right (TT6 or TT7 or TT8
56 HI BEAM - LT Fuse F56UA Fuse 10A E4E Headlamp Left High Beam (without TT6 or TT7 or TT8), M28L High Beam Solenoid Actuator - Left (TT6 or TT7 or TT8
57 INL - STG COL LOCK Fuse F57UA Fuse 5A K60 Steering Column Lock Control Module
58 - - - Not Used
59 DIESEL FUEL/SEC AIR Fuse F59UA Fuse 50A KR25 Secondary Air Injection Pump Relay
60-64 - - - Not Used
65 TRLR RT S/T LMP Fuse F65UA Fuse 10A X88 Trailer Connector
66 TRLR LT S/T LMP Fuse F66UA Fuse 10A X88 Trailer Connector
67 Spare Fuse - 5A -
68 Spare Fuse - 10A -
69 Spare Fuse - 15A -
70 Spare Fuse - 20A -
71 Spare Fuse - 25A -
72 Spare Fuse - 30A -
1 - - - Not Used
2 VACUUM PUMP Relay KR14 Brake Booster Pump Motor Relay - F12U Fuse
3 - - - Not Used
4 WIPER CNTR Relay KR12B Windshield Wiper Relay - KR12C Windshield Wiper Speed Control Relay
5 WIPER SPEED Relay KR12C Windshield Wiper Speed Control Relay - M75 Windshield Wiper Motor
6 - - - Not Used
7 POWERTRAIN Relay KR75 Powertrain Relay - F7U, F8U, F9U, F10U, and F11U Fuses
8 HDLP WASH Relay KR2 Headlamp Washer Fluid Pump Relay - G16 Headlamp Washer Fluid Pump
9 - - - Not Used
10 STARTER Relay KR27 Starter Relay - M64 Starter Motor
11-12 - - - Not Used
13 RUN/CRANK Relay KR74 Ignition Run Relay - F3U, F5U, F16U, F17U, F19U, F20U, F52U, F53U, F54U, and F57U Fuses
14 LO BEAM/HID KR49 Headlamp Low Beam Relay - F46U, and F47U Fuses
15 - - - Not Used
16 DIESEL FUEL HEAT/SEC AIR PUMP Relay KR25 Secondary Air Injection Pump Relay - G21 Secondary Air Injection Pump
Important: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block 
- - KR3 Horn Relay - Horn Fuse
- - KR31 Auxiliary Coolant Pump Relay - G8 Coolant Pump Auxiliary
- - KR46 Front Fog Lamp Relay - F50U Fuse
- - KR48 Headlamp High Beam Relay - F55U, and F56U Fuses
- - KR63L Trailer Stop/Turn Signal Lamp Relay - Left - F66U Fuse
- - KR63R Trailer Stop/Turn Signal Lamp Relay - Right - F65U Fuse
Fig 3: X50A Fuse Block - Underhood Top View
GM2439336Courtesy of GENERAL MOTORS CORP.
Fig 4: X50A Fuse Block - Underhood Bottom View
GM2349002Courtesy of GENERAL MOTORS CORP.
Fig 5: View Of X50A Fuse Block - Underhood X1
GM2174006Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X1

Pin Wire Circuit Function
1-8 - - Not Used
9 0.8 D-GN 29 Horn Control
10 0.8 PU 2234 Front Fog Lamp Supply Voltage
11 1 TN/WH 312 Right Headlamp Low Beam Supply Voltage
12 1 YE 712 Left Headlamp Low Beam Supply Voltage
13-24 - - Not Used
25 0.5 BN 436 AIR Pump Relay Control (LAU)
26 0.8 L-GN/BK 311 Right Headlamp High Beam Supply Voltage
27 0.5 D-GN/WH 711 Left Headlamp High Beam Supply Voltage
28 0.5 D-GN 335 Low Speed Cooling Fan Relay Control
29-45 - - Not Used
46 5 YE 5358 Auxiliary Cooling Fan Motor Supply Voltage
47 3 PU 6 Starter Solenoid Crank Voltage
48 5 BK 450 Ground (LF1)
49 5 GY 532 Cooling Fan Motor Supply Voltage (LF1)
50 5 L-BU 409 Cooling Fan Motor Supply Voltage (LF1)
51 - - Not Used
52 0.5 D-BU 473 High Speed Cooling Fan Relay Control (LF1)
53-55 - - Not Used
56 0.5 PU/WH 6386 Starter Relay Control
57-72 - - Not Used
73 1 BK 1050 Ground
74-78 - - Not Used
79 0.8 PK/BK 5292 Ignition Voltage
80 - - Not Used
81 0.8 PK/BK 5291 Ignition Voltage
82 0.8 PK 2139 Ignition Voltage
Connector Part Information 
  • Harness Type: Engine
  • OEM Connector: 13600400
  • Service Connector: 13576528
  • Description: 82-Way F DSQ 1.5 2.8 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: 9-12, 25-28, 52, 56, 73, 79, 81, 82
  • Terminal/Tray: 2-964284-1/25
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pins: 46-50
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
Fig 6: View Of X50A Fuse Block - Underhood X2
GM2174004Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X2

Pin Wire Circuit Function
1 0.8 D-GN 392 Rear Window Washer Pump Control
2 0.8 OG 98 Windshield Wiper Motor Dynamic Brake Control
3 - - Not Used
4 0.35 PK 1039 Ignition 1 Voltage
5 0.5 PU 1197 Headlamp Washer Pump Control (CE4)
6 - - Not Used
7 0.8 PK 1639 Ignition 1 Voltage
8 1 D-GN 95 Windshield Wiper Motor Low Speed
9 0.5 BN 6305 Vacuum Pump Relay Control
10 0.35 L-GN 2270 Rear Window Washer Relay Control
11 0.5 TN 860 Front Windshield Wiper Switch High Signal
12 0.35 PK 139 Ignition 1 Voltage
13 - - Not Used
14 0.5 OG 2268 Washer Fluid Pump Relay Control
15 0.35 TN 28 Horn PCB Relay Control
16 0.35 PK 1139 Ignition Voltage
17 0.35 D-GN/WH 1317 Fog Lamp Relay Control
18 0.5 WH 2282 Headlamp Washer Relay Control (CE4)
19 0.5 YE 5199 Ignition Voltage
20 0.5 PK 1739 Ignition 1 Voltage
21 0.35 GY 5127 Afterboil Coolant Pump Supply Voltage (LAU)
22 0.35 GY 91 Wiper Relay Control
23 - - Not Used
24 0.5 PK 7574 A/C Compressor Control
25 0.5 PU 7575 A/C Compressor Supply Voltage
26-28 - - Not Used
29 0.5 TN/WH 1969 Headlamp High Beam Relay Control
30 0.35 L-BU/WH 807 Off/Accessory Voltage (UA2/UTC)
31 0.35 PK 3039 Ignition Voltage (T84)
32 0.35 PK/WH 1970 Headlamp Low Beam Relay Control (TT6/TT8)
33-35 - - Not Used
36 5 RD/BK 442 Battery Positive Voltage
37-39 - - Not Used
40 5 RD/BK 642 Battery Positive Voltage
41 5 RD/BK 1242 Battery Positive Voltage
42 - - Not Used
43 0.8 D-GN 319 Right Rear Trailer Stop/Turn Lamp Supply Voltage
44 0.35 OG 5186 Left Trailer Turn Signal Lamp Control
45 0.35 BN 6136 LED Backlight Dimming Control
46-55 - - Not Used
56 0.35 YE 5187 Right Trailer Turn Signal Lamp Control
57 0.35 YE 6817 LED Backlight Dimming Control
58-66 - - Not Used
67 0.8 YE 318 Left Rear Trailer Stop/Turn Lamp Supply Voltage (without U4G)
68 0.5 RD/WH 2340 Battery Positive Voltage
69 0.5 RD/WH 1140 Battery Positive Voltage (TT6/TT8)
70 3 RD/WH 3840 Battery Positive Voltage
71 2 RD/BK 1042 Battery Positive Voltage
72-74 - - Not Used
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13600393
  • Service Connector: 13576544
  • Description: 74-Way F DSQ 1.5 2.8 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: 1, 2, 5, 7-9, 11, 14, 18-20, 23-25, 29, 43, 67-69
  • Terminal/Tray: 2-964284-1/25
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pins: 10, 12, 15-17, 22, 30-32, 44, 45, 56, 57
  • Terminal/Tray: 962943-5/16
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: J-38125-560/J-35616-14 (GN)
  • Pins: 35
  • Terminal/Tray: 12065915/5
  • Core/Insulation Crimp: C/A
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: 36, 40-42
  • Terminal/Tray: 12110127/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12150860/J-35616-44 (YE)
  • Pins: 4, 70, 71
  • Terminal/Tray: 4-965999-1/25
  • Core/Insulation Crimp: Pins 4, 70 - Pending
  • Core/Insulation Crimp: Pins 71 - 4/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
Fig 7: View Of X50A Fuse Block - Underhood X3
GM2220560Courtesy of GENERAL MOTORS CORP.
X50A Fuse Block - Underhood X3

Pin Wire Circuit Function
1 2 PK/BK 5290 Ignition Voltage (LF1)
0.8 PK/BK 5290 Ignition Voltage (LAU)
2 0.5 PK/BK 5293 Ignition Voltage
3 - - Not Used
4 0.8 OG 1470 Brake Booster Pump Motor Supply Voltage
5 2 BK 150 Ground
6-11 - - Not Used
12 0.5 PK 7574 A/C Compressor Control
13-14 - - Not Used
15 0.5 YE 5991 Powertrain Relay Control
16-17 - - Not Used
18 0.5 PK/BK 5294 Battery Positive Voltage
19 0.5 PU 7575 A/C Compressor Supply Voltage
20 0.5 PK 439 Ignition Voltage
21 0.5 PK 1839 Ignition 1 Voltage (LAU)
22-25 - - Not Used
26 1 PU 92 Windshield Wiper Motor High Speed
27 0.8 RD/WH 1840 Battery Positive Voltage
28-34 - - Not Used
35 0.8 PK 5126 Afterboil Coolant Pump Relay Control (LAU)
36 - - Not Used
37 0.5 RD/WH 440 Battery Positive Voltage
38-50 - - Not Used
Connector Part Information 
  • Harness Type: Engine
  • OEM Connector: 13600407
  • Service Connector: 13505902
  • Description: 50-Way F 1.5/2.8 Metri-Pack 800 Series (BK)
Terminal Part Information 
  • Pins: 1 (LF1), 5
  • Terminal/Tray: 4-965999-1/25
  • Core/Insulation Crimp: 4/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pins: 1 (LAU), 2, 4, 12, 15, 18-21, 26, 27, 35, 37
  • Terminal/Tray: 962943-5/16
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: J-38125-560/J-35616-14 (GN)
Fig 8: View Of X51A Fuse Block - Instrument Panel Label
GM2439340Courtesy of GENERAL MOTORS CORP.
X51A FUSE BLOCK - INSTRUMENT PANEL FUSE AND RELAY IDENTIFICATION LEGEND

No. Device Label Name Fuse And Relay Description Rating Circuits
1 DISPLY Fuse F1DA Fuse 10A A20 Radio/HVAC Controls, A13 Rear Audio Control Module, P17 Info Display Module (with Navigation)
2 S/ROOF Fuse F2DA Fuse 25A K62 Sunroof Sunshade Motor Module, M69B Sunroof Window Motor Module
3 SPARE Fuse F3DA Fuse 15A Not Used
4 UHP Fuse F4DA Fuse 10A K82 Mobile Telephone Control Module
5 RDO Fuse F5DA Fuse 15A T11 Multimedia Player Interface Module (UYE or UYG or UYI or UYJ or UYK), A11 Radio
6 APO-IP Fuse F6DA Fuse 20A X80G Accessory Power Receptacle - Instrument Panel
7 APO-CNSL Fuse F7DA Fuse 20A X80H Accessory Power Receptacle - Center Console, X80D Accessory Power Receptacle - Center Console Compartment
8 BCM 3 Fuse F8DA Fuse 15A K9 Body Control Module
9 BCM 4 Fuse F9DA Fuse 15A K9 Body Control Module
10 BCM 8 Fuse F10DA Fuse 30A K9 Body Control Module
11 FRT BLWR Fuse F11DA Fuse 40A K8 Blower Motor Control Module
12-13 - - - Not Used
14 BCM 5 Fuse F14DA Fuse 15A K9 Body Control Module
15 ONSTAR Fuse F15DA Fuse 10A K73 Telematics Communication Interface Control Module
16 RAIN SNSR Fuse F16DA Fuse 10A B117 Rain Sensor
17 BCM 6 Fuse F17DA Fuse 15A K9 Body Control Module
18 ESCL Fuse F18DA Fuse 15A K60 Steering Column Lock Control Module
19 AIRBAG Fuse F19DA Fuse 10A K36 Inflatable Restraint Sensing and Diagnostic Module
20 DLC Fuse F20DA Fuse 10A X84 Data Link Connector
21 IPC Fuse F21DA Fuse 10A P16 Instrument Cluster
22 SPARE Fuse F22DA Fuse - Not Used
23 BCM 1 Fuse F23DA Fuse 15A K9 Body Control Module
24 BCM 2 Fuse F24DA Fuse 15A K9 Body Control Module
25 AMP/RDO Fuse F25DA Fuse 25A T3 Audio Amplifier
26 HVAC Fuse F26DA Fuse 15A K33 HVAC Control Module
R1 RAP/ACCY RLY KR76 Retained Accessory Power Relay - F6D, and F7D Fuses
R2 LOGIC RLY FR104A Logistic Mode Relay 1 - F1D, F4D, and F5D Fuses
R3 - - - Not Used
Fig 9: X51A Fuse Block - Instrument Panel Top View
GM2439345Courtesy of GENERAL MOTORS CORP.
Fig 10: X51A Fuse Block - Instrument Panel Bottom View
GM2405334Courtesy of GENERAL MOTORS CORP.
Fig 11: X51A Fuse Block - Instrument Panel Top View Relays
GM2355276Courtesy of GENERAL MOTORS CORP.
Fig 12: X51A Fuse Block - Instrument Panel Bottom Views Relays
GM2353347Courtesy of GENERAL MOTORS CORP.
Fig 13: Fuse Block - I/P Bottom View Fuses
GM2405334Courtesy of GENERAL MOTORS CORP.
Fuse Block - I/P Wire Entry Fuses

Pin Wire Circuit Function
16 0.5 RD/WH 3240 Battery Positive Voltage
17 1 RD/BK 1342 Battery Positive Voltage
18 1 RD/BK 1342 Battery Positive Voltage
19 5 RD/BK 42 Battery Positive Voltage
20 0.8 RD/WH 2940 Battery Positive Voltage
21 1 RD/WH 3540 Battery Positive Voltage
22 0.8 RD/WH 5340 Battery Positive Voltage (UPH or UPJ)
23 1.0 RD/BK 1142 Battery Positive Voltage
24 1.0 RD/BK 1142 Battery Positive Voltage
25 0.5 RD/WH 140 Battery Positive Voltage (UE1)
26 - - Not Used
27 0.5 RD/WH 340 Battery Positive Voltage
28 1.0 RD/BK 1342 Battery Positive Voltage
29 1 D-GN 801 Retained Accessory Power Fuse Supply Voltage
30 1 D-GN 1001 Retained Accessory Power Fuse Supply Voltage
31 0.5 RD/WH 240 Battery Positive Voltage
32 3 RD/WH 3440 Battery Positive Voltage
33 2 RD/WH 2740 Battery Positive Voltage
34 3 RD/WH 2540 Battery Positive Voltage
35 3 RD/WH 4040 Battery Positive Voltage
36 3 RD/BK 542 Battery Positive Voltage
37-38 - - Not Used
39 0.8 RD/WH 4140 Battery Positive Voltage
40 0.5 RD/WH 4440 Battery Positive Voltage
41 0.8 RD/WH 40 Battery Positive Voltage
42 0.5 RD/WH 2840 Battery Positive Voltage
43 - - Not Used
44 0.5 RD/WH 2140 Battery Positive Voltage
45 0.5 RD/WH 2240 Battery Positive Voltage
46 3 RD/WH 3740 Battery Positive Voltage
47 0.5 RD/WH 3340 Battery Positive Voltage (without UY1)
48 5 RD/Bk 42 Battery Positive Voltage
49 5 RD/BK 842 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 13595188
  • Description: 47-Way Fuse Block
Terminal Part Information 
  • Pins: 17-18, 21-24, 26, 28-30, 33-34, 44-45
  • Terminated Lead: Pending
  • Release Tool: J-38125-36
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: 2-964284-1/25
  • Core/Insulation Crimp: E/A
  • Pin: 39
  • Terminated Lead: Pending
  • Release Tool: J-38125-36
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: 4-965999-1/25
  • Core/Insulation Crimp: C/A
  • Pins: 16, 19-20, 25, 27, 31-32, 35-38, 40-43, 47
  • Terminated Lead: Pending
  • Release Tool: Pending
  • Diagnostic Test Probe: Pending
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
Fig 14: Fuse Block - I/P Bottom View Relays
GM2353347Courtesy of GENERAL MOTORS CORP.
Fuse Block - I/P Wire Entry Relays

Pin Wire Circuit Function
1-5 - - Not Used
6 0.35 L-GN 3264 LOGISTICS PCB Relay (REC) Closed Control Circuit
7 0.35 BK 1650 Ground
8 0.35 D-BU 3263 LOGISTICS PCB Relay (REC) Open Control Circuit
9 3 RD/BK 1342 Battery Positive Voltage
10 5 RD/BK 42 Battery Positive Voltage
11 0.35 PK 70 RAP Relay Switch Supply Voltage
12 - - Not Used
13 0.35 BK 1650 Ground
14 5 RD/BK 42 Battery Positive Voltage
15 3 RD/Bk 1142 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 13595183
  • Description: 15-Way Fuse Block (BK)
Terminal Part Information 
  • Pin: 14
  • Terminated Lead: Pending
  • Release Tool: 12094430
  • Diagnostic Test Probe: J-35616-42 (RD)
  • Terminal/Tray: 15344769/23
  • Core/Insulation Crimp: F/B
  • Pins: 1-13, 15
  • Terminated Lead: Pending
  • Release Tool: Pending
  • Diagnostic Test Probe: Pending
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
Fig 15: View Of X53A Fuse Block - Rear Body Label
GM2439350Courtesy of GENERAL MOTORS CORP.
X53A FUSE BLOCK - REAR BODY FUSE AND RELAY IDENTIFICATION LEGEND

No. Device Label Name Fuse And Relay Description Rating Circuits
1 Fuse Puller F1RA Fuse - -
2-7 SPARE FUSES - - Not Used
8 AOS MDL Fuse F8RA Fuse 5A K85 Passenger Presence Detection Module
9 SPARE Fuse - - Not Used
10 SPARE Fuse - - Not Used
11 SPARE Fuse - - Not Used
12 PASS DR WDO SW Fuse F12RA Fuse 10A S79P Window Switch - Passenger
13 DRV PWR SEAT Circuit Breaker F13RA Fuse 25A S64D Seat Adjuster Switch - Driver, S65D Seat Lumbar Support Switch - Driver (AL2)
14 PASS DR PWR SEAT Circuit Breaker F14RA Fuse 25A S64P Seat Adjuster Switch - Passenger, S65P Seat Lumbar Support Switch - Passenger (AL2)
15 MDLTRLR Fuse F15RA Fuse 40A K68 Trailer Lighting Control Module
16 SPARE Relay - - Not Used
17 FUEL PUMP Relay KR23A Fuel Pump Relay - Not Used
18 WPR CNTRL Relay KR7 Rear Wiper Relay - M45 Rear Wiper Motor
19 FUEL PUMP Fuse F19RA Fuse 20A K27 Fuel Pump Control Module
20 WPR REAR Fuse F20RA Fuse 20A KR7 Rear Wiper Relay
21 PRK LPS TRLR Fuse F21RA Fuse 15A X88 Trailer Connector
22 TRLR EXP Fuse F22RA Fuse 30A K68 Trailer Lighting Control Module
23 RDM Fuse F23RA Fuse 10A K69 Transfer Case Control Module (F46)
24 INFOTMNT Fuse F34RA Fuse 15A P22D Video Display - Driver Seat Headrest (UWG), P22P Video Display - Passenger Seat Headrest (UWG)
25 RPA MDL Fuse F25RA Fuse 10A K41 Parking Assist Control Module (UD5)
26 SEC Fuse F26RA Fuse 5A Theft Deterrent Alarm Siren (UA2 or UTC), B67 Ultrasonic Intrusion Sensor (UA2 or UTC)
27 THEFT HORN Fuse F27RA Fuse 10A Not Used
28 LGATE Fuse F28RA Fuse 15A KR95A Liftgate Release Relay
29 RUN RLY Relay Trailer Ignition Relay - F22RA Fuse
30 LOGIC Relay KR104B Logistic Mode Relay 2 - F23RA, F24RA, F25RA, F26RA, F39RA, F45RA Fuses
31 DEFOG REAR Relay KR5 Rear Defogger Relay - F42RA, F43RA, F54RA Fuses
32 MIR WDO MDL Fuse F32RA Fuse 10A S79D Window Switch - Driver, Memory Rearview Module, S52 Outside Rearview Mirror Switch
33 SPARE Fuse - - Not Used
34 CNSTR VENT Fuse F34RA Fuse 10A Q13 Evaporative Emission Vent Solenoid Valve
35 LGM LOGIC Fuse F35RA Fuse 10A K39 Liftgate Control Module
36 CAMERA Fuse F36RA Fuse 10A B87 Rearview Camera
37 FRT VENT SEAT Fuse F37RA Fuse 15A K55D Seat Blower Assembly - Driver Cushion, K53D Seat Blower Assembly - Driver Back, M8B Blower Motor - Auxiliary, K53P Seat Blower Assembly - Passenger Back, K55P Seat Blower Assembly - Passenger Cushion
38 TRLR MDL Fuse F38RA Fuse 10A K68 Trailer Lighting Control Module
39 SADS MDL Fuse F39RA Fuse 10A K19 Suspension Control Module
40 RR HTD SEAT Fuse F40RA Fuse 20A TBD Heated Seat Control Module - Rear
41 FRT HTD SEAT Fuse F41RA Fuse 20A K40 Seat Memory Control Module, TBD Heated Seat Control Module - Passenger
42 REAR DEFOG Fuse F42RA Fuse 30A E18 Rear Defogger Grid
43 BCM THEFT Fuse F43RA Fuse 10A B67 Ultrasonic Intrusion Sensor
44 TRLR 2 Fuse F44RA Fuse 30A X88 Trailer Connector
45 UGDO Fuse F45RA Fuse 5A S25 Garage Door Opener (UG1)
46 RT WDO Fuse F46RA Fuse 40A M74P Window Motor - Passenger, S79RR Window Switch - Right Rear
47 PRK BRK MDL Fuse F47RA Fuse 30A K83 Parking Brake Control Module
48 SPARE Fuse - - Not Used
49 LT WDO Fuse F49RA Fuse 40A M74D Window Motor - Driver, M74LR Window Motor - Left Rear
50 IGN/THEFT 1 Fuse F50RA Fuse 30A K84 Keyless Entry Control Module
51 LGATE MDL Fuse F51RA Fuse 30A K39 Liftgate Control Module
52 IGN/THEFT 2 Fuse F52RA Fuse 15A K84 Keyless Entry Control Module
53 SPARE Fuse - - Not Used
54 HTD MIR Fuse F54RA Fuse 10A A9A Outside Rearview Mirror - Driver, A9B Outside Rearview Mirror - Passenger
55 AUX PWR Fuse F55RA Fuse 20A X80C Accessory Power Receptacle - Cargo
Important: Relays listed below are non-serviceable Printed Circuit Board (PCB) relays and are internal to the block 
- - KR95A Liftgate Release Relay - A23C Liftgate Latch Assembly
- - Liftgate SecurityRelay - A23C Liftgate Latch Assembly
- - TRAILER PARK LAMP Relay - F21RA Fuse
Fig 16: X53A Fuse Block - Rear Body Top View
GM2439352Courtesy of GENERAL MOTORS CORP.
Fig 17: View Of X53A Fuse Block - Rear Body X1
GM2394106Courtesy of GENERAL MOTORS CORP.
X53A Fuse Block - Rear Body X1

Pin Wire Circuit Function
1 3 RD/BK 742 Battery Positive Voltage (U4G)
2 2 RD/WH 1440 Battery Positive Voltage (AG2)
3 - - Not Used
4 0.35 RD/WH 5240 Battery Positive Voltage
5 0.35 RD/WH 2040 Battery Positive Voltage
6 - - Not Used
7 0.8 WH 393 Rear Window Wiper Motor Control
8 - - Not Used
9 2 RD/WH 5040 Battery Positive Voltage
10-12 - - Not Used
13 0.35 YE 5420 Rear Wiper Relay Control
14 - - Not Used
15 0.8 BK 1350 Ground
16 0.35 PK 1339 Ignition 1 Voltage (UVC)
17 - - Not Used
18 0.35 RD/WH 4540 Ignition 1 Voltage (UA2 or UTC)
19 0.5 RD/WH 4840 Battery Positive Voltage (UWG)
20 1 RD/WH 5140 Battery Positive Voltage (AAB or KA1 without AAB)
21 - - Not Used
22 0.8 PK 739 Ignition 1 Voltage
22 0.8 PK 739 Ignition 1 Voltage
23-24 - - Not Used
25 0.35 RD/WH 3140 Battery Positive Voltage (UD5)
26 0.8 BN 2109 Trailer Park Lamps Supply Voltage (without U4G)
27 - - Not Used
28 2 RD/WH 2640 Battery Positive Voltage
29 1 RD/WH 4740 Battery Positive Voltage (KA6)
30 0.8 PK 1639 Ignition 1 Voltage
31 0.8 PU 739 Ignition 1 Voltage (KU1)
32 - - Not Used
33 0.5 RD/WH 1940 Battery Positive Voltage
34 1 RD/BK 1542 Battery Positive Voltage (F46)
35 3 BN 1141 Ignition 3 Voltage (U4G)
36 0.8 RD/WH 3040 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13709529
  • Service Connector: See Catalog
  • Description: 36-Way F DSQ Series (BK)
Terminal Part Information 
  • Pins: 1, 2, 9, 27, 28, 35
  • Terminal/Tray: 4-965999-1/25
  • Core/Insulation Crimp: Pins 1, 35 - Pending
  • Core/Insulation Crimp: Pins 2, 9, 27, 28 - 4/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pins: 4, 5, 13, 16, 18, 25
  • Terminal/Tray: 962943-5/16
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: J-38125-560/J-35616-14 (GN)
  • Pins: 7, 14, 15, 19, 20, 22, 26, 29, 30, 31, 33, 34, 36
  • Terminal/Tray: 2-964284-1/25
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
Fig 18: View Of X53A Fuse Block - Rear Body X2
GM2394107Courtesy of GENERAL MOTORS CORP.
X53A Fuse Block - Rear Body X2

Pin Wire Circuit Function
1 3 RD/WH 1640 Battery Positive Voltage
2 - - Not Used
3 0.5 RD/WH 1740 Battery Positive Voltage (F45)
4 0.8 PK 1239 Ignition 1 Voltage (U4G)
5 0.5 RD/WH 2440 Battery Positive Voltage
6 0.35 PU 293 Intrusion Sensor Supply Voltage (UA2 or UTC)
7 3 RD/WH 4640 Battery Positive Voltage (U4G)
8 2 PU 293 Rear Defog Element Supply Voltage
9 - - Not Used
10 0.35 RD/WH 3940 Fuse Output Battery Type 3 Fuse (UG1)
11 1 RD/WH 840 Battery Positive Voltage (TB5)
12 3 RD/BK 4042 Battery Positive Voltage
13 - - Not Used
14 0.35 WH 193 Rear Defog Relay Control
15 1 RD/WH 4940 Battery Positive Voltage
16-18 - - Not Used
19 0.35 L-GN/BK 3267 Child Security Lock Relay Control
20-23 - - Not Used
24 3 RD/BK 4042 Battery Positive Voltage
25-26 - - Not Used
27 2 BK 2150 Ground
28 1 D-BU/WH 3266 Child Security Lock Motor Control
29-30 - - Not Used
31 0.35 PK/BK 186 Fuel Door Lock Relay Control
32 0.35 TN 7547 Global Door Lock Relay Control (AF8)
33 - - Not Used
34 0.35 D-BU 3263 Logistics Relay Control
35 2 D-GN 3271 Door Lock/Unlock Control
36 2 GY 295 Door Lock Actuator Lock Control
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13709530
  • Service Connector: 13317825
  • Description: 36-Way F DSQ 1.5/2.8/Ducon 6.3 Series, Unsealed (GY)
Terminal Part Information 
  • Pins: 1, 7, 8, 12, 24
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: Pending
  • Pins: 6, 10, 14, 19, 31, 32, 34
  • Terminal/Tray: 962943-5/16
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: J-38125-560/J-35616-14 (GN)
  • Pins: 27, 35, 36
  • Terminal/Tray: 4-965999-1/25
  • Core/Insulation Crimp: 4/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pins: 3, 4, 5, 11, 15, 28
  • Terminal/Tray: 2-964284-1/25
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
Fig 19: View Of X53A Fuse Block - Rear Body X3
GM2180229Courtesy of GENERAL MOTORS CORP.
X53A Fuse Block - Rear Body X3

Pin Wire Circuit Function
1 0.5 RD/WH 4340 Battery Positive Voltage
2 0.35 D-BU 45 Park Lamp Supply Voltage/Marker Lamp Supply Voltage
3 3 RD/WH 1540 Battery Positive Voltage (TB5)
4 2 RD/WH 540 Battery Positive Voltage
5 3 RD/BK 1842 Battery Positive Voltage
6 1 OG 6129 Liftgate Lock Actuator Ground (UA2 or UTC without TB5)
7 - - Not Used
8 0.8 L-BU 6128 Rear Closure Unlatch Motor Unlatch Control (without TB5)
9 0.35 L-GN 5486 Run Relay Coil Control
10 - - Not Used
11 0.35 L-GN 3264 Logistics Relay Control
12 0.35 YE 5704 Liftgate Latch Relay Coil Control (without TB5)
13 - - Not Used
14 0.5 OG 2267 Mirror Heating Element Supply Voltage
15 0.5 OG 2267 Mirror Heating Element Supply Voltage
16 1 GY 5911 Driver Door Lock Motor Lock Control
17 1 BN 5910 Global Door Lock (AF8)
18 3 RD/BK 1842 Battery Positive Voltage
19 0.8 D-BU 6800 Fuel Door Lock Signal
20 2 L-BU 195 Door Lock Control
21 0.35 D-GN 5706 Liftgate Relay High Control (without TB5)
22 - - Not Used
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 13600351
  • Service Connector: 13317835
  • Description: 22-Way F DSQ 1.5/2.8/Ducon 6.3 Series, Unsealed (BK)
Terminal Part Information 
  • Pins: 1, 6, 8, 14-17, 19
  • Terminal/Tray: 2-964284-1/25
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
  • Pins: 2, 9, 11, 12, 21
  • Terminal/Tray: 962943-5/16
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: J-38125-560/J-35616-14 (GN)
  • Pins: 3, 5, 18
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: Pending
  • Pins: 4, 20
  • Terminal/Tray: 4-965999-1/25
  • Core/Insulation Crimp: 4/A
  • Release Tool/Test Probe: J-38125-36/J-35616-35 (VT)
Fig 20: View Of X53A Fuse Block - Rear Body X4
GM2353348Courtesy of GENERAL MOTORS CORP.
X53A Fuse Block - Rear Body X4

Pin Wire Circuit Function
1 5 RD/BK 642 Battery Positive Voltage
2 5 RD/BK 1242 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Body
  • OEM Connector: 10719920
  • Service Connector: 13574943
  • Description: 2-Way F 9.5 Ducon Series (BK)
Terminal Part Information 
  • Terminal/Tray: Pending
  • Core/Insulation Crimp: Pending
  • Release Tool/Test Probe: Pending
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