Fuse Block Connector End View - Underhood Bottom View

Fig 1: Fuse Block - Underhood Bottom View

Courtesy of GENERAL MOTORS CORP.

Fuse Block - Underhood C1 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193905 68-Way F Metri-pack 280 Series Flexlock (LT GRY)
Pin	Wire Color	Circuit No.	Function
A1-A2	-	-	Not Used
A3	YEL	5	Crank Voltage
A4	ORN	2040	Battery Positive Voltage
A5	ORN	4340	Battery Positive Voltage - HVAC Control Module
	ORN	4340	Battery Positive Voltage - Air Suspension Control Module (w/ZM6)
A6	PNK	39	Ignition 1 Voltage
A7	YEL	1139	Ignition 1 Voltage - Inflatable Restraint I/P Module Disable Switch
	YEL	1139	Ignition 1 Voltage - SDM Module
A8	LT GRN/BLK	584	Park Lock Solenoid Supply Voltage
	LT GRN/BLK	584	A/T Shift Lock Control Switch Supply Voltage
A9	PNK	3	Ignition 1 Voltage
A10-A11	-	-	Not Used
A12	BRN	2409	Interior Park Lamps Supply Voltage - Inflatable Restraint I/P Module Disable Switch
	BRN	2409	Interior Park Lamps Supply Voltage - Marker/Clearance Lamps
B1	-	-	Not Used
B2	ORN	2268	Windshield Washer Relay Control
B3-B7	-	-	Not Used
B8	ORN	1840	Battery Positive Voltage
B9	BLK/WHT	1969	Headlamp High Beam Relay Control
B10	-	-	Not Used
B11	ORN	3840	Battery Positive Voltage
B12	RED	142	Battery Positive Voltage
C1	ORN	1640	Battery Positive Voltage
C2	ORN	3240	Battery Positive Voltage - OnStar Module
	ORN	3240	Battery Positive Voltage - OnStar Module
C3	BLK	28	Horn Relay Control - BCM
	BLK	28	Horn Relay Control - Turn Signal/Multifunction Switch
C4-C8	-	-	Not Used
C9	PNK	1020	Off/Run/Crank Voltage - Park Switch
	PNK	1020	Off/Run/Crank Voltage - Fuse Block I/P
C10	ORN	1040	Battery Positive Voltage
C11	-	-	Not Used
C12	PPL	420	TCC Brake Switch/Cruise Control Release Signal
D1-D2	-	-	Not Used
D3	PNK/WHT	1970	Headlamp Low Beam Relay Control
D4	ORN	340	Battery Positive Voltage - Radio
	ORN	340	Battery Positive Voltage - RSA Controller
D5	ORN	640	Battery Positive Voltage - Cigar Lighter
	ORN	640	Battery Positive Voltage - DLC Connector
D8-D9	-	-	Not Used
D10	PNK	639	Ignition 1 Voltage - Traction Control switch
	PNK	639	Ignition 1 Voltage - Turn Hazard Switch
D11	-	-	Not Used
D12	ORN	1140	Battery Positive Voltage
E1-E2	-	-	Not Used
E3	LT GRN/BLK	592	DRL Relay Control
E4	ORN	4540	Battery Positive Voltage
E5-E6	-	-	Not Used
E7	LT BLU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage
E8-E9	-	-	Not Used
E10	DK BLU	2115	Right Turn Signal Lamps Supply Voltage
E11	ORN	2340	Battery Positive Voltage
E12	-	-	Not Used
F1	-	-	Not Used
F2	ORN	3740	Battery Positive Voltage
F3	LT BLU	2114	Left Turn Signal Lamps Supply Voltage
F4	-	-	Not Used
F5	PNK	739	Ignition 1 Voltage
F6	PNK	639	Ignition 1 Voltage
F7	ORN	2840	Battery Positive Voltage
F8-F9	-	-	Not Used
F10	GRY	1524	Backup Lamp Supply Voltage
F11	WHT	1080	Park Lamp Relay Control
F12	ORN	1540	Battery Positive Voltage

Fuse Block - Underhood C2 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193906 68-Way F Metri-pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A1 -A2	-	-	Not Used
A3	DK GRN	59	A/C Compressor Clutch Supply Voltage
A4-A6	-	-	Not Used
A7	DK GRN/WHT	465	Fuel Pump Relay Control - Primary
A8	ORN	440	Battery Positive Voltage
A9	PNK	1339	Ignition 1 Voltage - TAC Assembly
	PNK	1339	Ignition 1 Voltage - EBCM Module
A10	LT BLU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage
A11	GRY	1524	Trailer Backup Lamp Supply Voltage
A12	PNK	439	Ignition 1 Voltage - EVAP Purge Solenoid
	PNK	439	Ignition 1 Voltage - PCM Module
B1-B6	-	-	Not Used
B7	BLK	550	Ground
B8	ORN	440	Battery Positive Voltage
B9	PNK	1039	Ignition 1 Voltage
B10	PNK	439	Ignition 1 Voltage
B11-B12	-	-	Not Used
C1-C2	-	-	Not Used
C3	DK GRN/WHT	459	A/C Compressor Clutch Relay Control
C4-C9	-	-	Not Used
C10	PNK	1039	Ignition 1 Voltage - Fuel Injector 1
	PNK	1039	Ignition 1 Voltage - Fuel Injector 3
C11	-	-	Not Used
C12	PPL	420	TCC Brake Switch/Cruise Control Release Signal
D1-D2	-	-	Not Used
D3	LT GRN	275	Park Neutral Position Switch Park Signal
D4-D5	-	-	Not Used
D8	PNK	539	Ignition 1 Voltage - HO2S Bank 1 Sensor 2
	PNK	539	Ignition 1 Voltage - HO2S Bank 2 Sensor 2
D9	PNK	1239	Ignition 1 Voltage - Fuel Injector 2
	PNK	1239	Ignition 1 Voltage - Fuel Injector 4
D10	PNK	1039	Ignition 1 Voltage - Fuel Injector 5
	PNK	1039	Ignition 1 Voltage - Fuel Injector 7
D11	PPL	6	Starter Solenoid Crank Voltage
D12	YEL/BLK	625	Starter Enable Relay Control
E1-E5	-	-	Not Used
E6	PNK	1239	Ignition 1 Voltage - Fuel Injector 6
	PNK	1239	Ignition 1 Voltage - Fuel Injector 8
E7	PNK	1539	Ignition 1 Voltage - HO2S Bank 1 Sensor 1
	PNK	1539	Ignition 1 Voltage - HO2S Bank 2 Sensor 1
E8-E9	-	-	Not Used
E10	PNK	1239	Ignition 1 Voltage
E11-E12	-	-	Not Used
F1-F2	-	-	Not Used
F3	PPL	806	Crank Voltage
F4-F7	-	-	Not Used
F8	PNK	839	Ignition 1 Voltage
F9	PNK	639	Ignition 1 Voltage
F10	PNK	1020	Off/Run/Crank Voltage - PCM Module
	PNK	1020	Off/Run/Crank Voltage - Automatic Transmission
F11	DK GRN	1433	Park/Neutral Start Switch Signal
F12	-	-	Not Used

Fuse Block - Underhood C3 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193916 32-Way F Metri-pack 280 Series (RED)
Pin	Wire Color	Circuit No.	Function
A1-A2	-	-	Not Used
A3	DK BLU	2115	Right Turn Signal Lamps Supply Voltage
A4	ORN	2640	Battery Positive Voltage
A5-A6	-	-	Not Used
B1-B2	-	-	Not Used
B3	LT BLU	2114	Left Turn Signal Lamps Supply Voltage
B4-B5	-	-	Not Used
B6	BRN	2109	Trailer Park Lamps Supply Voltage
C1	-	-	Not Used
C2	LT GRN	1624	Trailer Backup Lamps Supply Voltage
C3-C5	-	-	Not Used
C6	BRN/WHT	2609	Right Rear Tail Lamp Supply Voltage
	BRN/WHT	2609	Right License/Side Marker Lamps Supply Voltage
D1-D6	-	-	Not Used
E1-E3	-	-	Not Used
E4	BLK	550	Ground
E5-E6	-	-	Not Used
F1	GRY	120	Fuel Pump Supply Voltage
F2-F3	-	-	Not Used
F4	LT BLU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage - EBCM
	LT BLU	1320	CHMSL Supply Voltage/Stop Lamp Supply Voltage - Tail/Stop Lamps
F5	-	-	Not Used
F6	BRN	2509	Left Rear Tail Lamp Supply Voltage
	BRN	2509	Left Rear License/Side Marker Lamps Supply Voltage

Fuse Block - Underhood C4 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12193914 32-Way F Metri-pack 280 Series (LT GRN)
Pin	Wire Color	Circuit No.	Function
A1-A2	-	-	Not Used
A3	DK BLU	2115	Right Turn Signal Lamps Supply Voltage
	DK BLU	2115	Right Front Marker Lamp Supply Voltage
A4	BLK	550	Ground
A5	-	-	Not Used
A6	DK GRN	1329	Left Horn Fuse Supply Voltage
	DK GRN	1329	Right Horn Fuse Supply Voltage
B1	-	-	Not Used
B2	DK BLU	545	DRL Supply Voltage - Left Lamp
	DK BLU	545	DRL Supply Voltage - Right Lamp
B3-B6	-	-	Not Used
C1	BRN	2309	Right Front Park Lamps Supply Voltage
	BRN	2309	Right Front Side Marker Lamp Supply Voltage
C2	-	-	Not Used
C5	BRN	2309	Left Front Park Lamp Supply Voltage
	BRN	2309	Left Front Side Marker Lamp Supply Voltage
C6	DK GRN/WHT	266	Rear Window Washer Pump Supply Voltage
D1-D6	-	-	Not Used
E1	LT BLU	2114	Left Turn Signal Lamps Supply Voltage
	LT BLU	2114	Left Front Marker Lamp Supply Voltage
E2	DK GRN/WHT	711	Left Headlamp High Beam Supply Voltage
E3	LT GRN/BLK	311	Right Headlamp High Beam Supply Voltage
E4-E6	-	-	Not Used
F1-F3	-	-	Not Used
F4	YEL	712	Left Headlamp Low Beam Supply Voltage
F5	TAN/WHT	312	Right Headlamp Low Beam Supply Voltage
F6	-	-	Not Used

Fuse Block - Underhood C5 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15393171 2-Way F J-Type (MD GRY)
Pin	Wire Color	Circuit No.	Function
A	RED	842	Battery Positive Voltage
B	RED	542	Battery Positive Voltage

Fuse Block - Underhood C6 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15393172 2-Way F J-Type (LT GRN)
Pin	Wire Color	Circuit No.	Function
A	RED	642	Battery Positive Voltage
B	-	-	Not Used

Fuse Block - Underhood C7 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15393168 2-Way F J-Type (BLK)
Pin	Wire Color	Circuit No.	Function
A	RED	342	Battery Positive Voltage
B	RED	42	Battery Positive Voltage

Fuse Block - Underhood C9 Pin Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15393170 2-Way F J-Type (NAT)
Pin	Wire Color	Circuit No.	Function
A	RED	442	Battery Positive Voltage
B	RED	4042	Battery Positive Voltage (w/ZM6)