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Junction Block - I/P C1 - Bottom View

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Junction Block- I/P C1 - Bottom View
GM1156070Courtesy of GENERAL MOTORS CORP.
Junction Block - I/P Wire Entry

Connector Part Information
  • 15401495
  • 48-Way F Metri-Pack 280 Series (BLK)
Pin Wire Color Circuit No. Function
2A DK GRN 117 Right Front Speaker Output (-) (UQ3/UQ5)
DK GRN 117 Right Front Speaker Output (-) (UQ7/Y91)
2B LT GRN 200 Right Front Speaker Output (+) (UQ3/UQ5)
LT GRN 200 Right Front Speaker Output (+) (UQ7/Y91)
2C BLK 1851 Ground (AU3 w/o YE9)
2D BRN/WHT 230 Instrument Panel Lamps Dimming Control (AU3 w/o YE9/Y91)
2E TAN/WHT 746 Right Front Door Ajar Switch Signal (w/o YE9)
2F BLK 1050 Ground
3A- 3F - - Not Used
4A BLK 1050 Ground
4B ORN 52 Blower Motor High Control (C42 and CJ3)
GRY/BLK 2337 Lower Right Air Temperature Sensor Signal (CJ2)
4C PPL 73 Medium 3 Blower Motor Control (C42 and CJ3)
BRN 718 Low Reference (CJ2)
4D RED 542 Battery Positive Voltage
4E TAN 63 Blower Motor Medium 1 Control (C42 and CJ3)
PPL 1838 Recirculation Door Position Signal (CJ2)
4F PPL/WHT 760 Blower Motor Speed Control (CJ2)
4G YEL 60 Blower Motor Low Control (C42/CJ3)
4H - - Not Used
4J LT BLU/BLK 1688 5-Volt Reference (CJ3/CJ2)
4K LT BLU 72 Medium 2 Blower Motor Control (CJ3/C42)
4L - - Not Used
4M YEL 1791 Low Reference (CJ2/CJ3)
5A - - Not Used
5B LT GRN 2275 Mode Door Position Signal (CJ2/CJ3)
5C TAN 2273 Mode Door Control (CJ2/CJ3)
5D DK BLU 1199 Left Air Temperature Door Control (CJ2/CJ3)
5E LT BLU 733 Left Air Temperature Door Position Signal (CJ2/CJ3)
5F - - Not Used
6A ORN 3840 Battery Positive Voltage (CF5)
6B BRN 2409 Interior Park Lamps Supply Voltage
6C BLK 1050 Ground
6D DK BLU 1353 RAP Supply Voltage (CF5)
6E-6F - - Not Used
7A GRY 295 Door Lock Actuator Lock Control (AU3 w/o YE9)
7B TAN 1047 PDM Class 2 Serial Data
7C ORN 4240 Battery Positive Voltage (YE9)
7D TAN 294 Door Lock Actuator Unlock Control (AU3 w/o YE9)
7E WHT 194 Door Unlock Control (AU3 w/o YE9)
ORN 1340 Battery Positive Voltage (YE9)
7F LT BLU 195 Door Lock Control (AU3 w/o YE9)
DK BLU 2115 Right Turn Signal Lamps Supply Voltage (Except Base)
8A WHT/BLK 2339 Lower Left Air Temperature Sensor Signal (CJ2)
8B - - Not Used
8C BRN 341 Ignition 3 Voltage (CJ2/CJ3)
8D DK BLU 1646 Right Air Temperature Door Position Signal (CJ2/CJ3)
8E WHT/BLK 1236 Right Air Temperature Door Control (CJ2/CJ3)
8F DK GRN 1614 Recirculation Door Control (CJ2/CJ3)
Junction Block - I/P - C2

GM366024Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12193930
  • 6-Way F Metri-Pack 280 Series Flexlock (BLK)
Pin Wire Color Circuit No. Function
A DK GRN 117 Right Front Speaker Output (-) (UQ3/UQ5/UQ7)
DK GRN 117 Right Front Speaker Output (-) (UQ3)
B LT GRN 200 Right Front Speaker Output (+) (UQ3/UQ5/UQ7)
LT GRN 200 Right Front Speaker Output (+) (UQ3)
C BLK 1851 Ground (AU3 w/o YE9)
D BRN/WHT 230 Instrument Panel Lamps Dimming Control (AU3 w/o YE9)
E BLK/WHT 746 Right Front Door Ajar Switch Signal (w/o YE9)
F BLK 1050 Ground (YE9)
BLK 1050 Ground (w/o YE9)
BLK 1050 Ground (w/o YE9)
Junction Block - I/P - C4

GM655757Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12194037
  • 12-Way F Metri-Pack 280 Series Flexlock (BRN)
Pin Wire Color Circuit No. Function
A BLK 1050 Ground
B ORN 52 Blower Motor High Control (C42/CJ3)
GRY/BLK 2337 Lower Right Air Temperature Sensor Signal (CJ2)
C PPL 73 Medium 3 Blower Motor Control (C42/CJ3)
BRN 718 Low Reference - Air Temperature Sensor - Lower Left (CJ2)
BRN 718 Low Reference - Air Temperature Sensor - Lower Right (CJ2)
D RED 542 Battery Positive Voltage (C42/CJ3)
E TAN 63 Blower Motor Medium 1 Control (C42/CJ3)
PPL 1838 Recirculation Door Position Signal (CJ2)
F PPL/WHT 760 Blower Motor Speed Control (CJ2)
G YEL 60 Blower Motor Low Control (C42/CJ3)
H LT BLU/BLK 1688 5-Volt Reference - Air Temperature Actuator - Left (CJ2/CJ3)
LT BLU/BLK 1688 5-Volt Reference - Air Temperature Actuator - Right (CJ2/CJ3)
J LT BLU/BLK 1688 5-Volt Reference - Mode Actuator (CJ2)
LT BLU/BLK 1688 5-Volt Reference - Recirculation Actuator (CJ2)
LT BLU/BLK 1688 5-Volt Reference - Mode Actuator (CJ3)
K LT BLU 72 Medium 2 Blower Motor Control (C42/CJ3)
L YEL 1791 Low Reference - Recirculation Actuator (CJ2)
YEL 1791 Low Reference - Mode Actuator (CJ2)
YEL 1791 Low Reference - Mode Actuator (CJ3)
M YEL 1791 Low Reference - Air Temperature Actuator - Left (CJ2/CJ3)
YEL 1791 Low Reference - Air Temperature Actuator - Right (CJ2/CJ3)
Junction Block - I/P - C5

GM366012Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12193924
  • 6-Way F Metri-Pack 280 Series Flexlock (BRN)
Pin Wire Color Circuit No. Function
A - - Not Used
B LT GRN 2275 Mode Door Position Signal
C TAN 2273 Mode Door Control
D DK BLU 1199 Left Air Temperature Door Control (CJ2/CJ3)
E LT BLU 733 Left Air Temperature Door Position Signal (CJ2/CJ3)
F - - Not Used
Junction Block - I/P - C6

GM655740Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12193929
  • 6-Way F Metri-Pack 280 Series Flexlock (LT GRN)
Pin Wire Color Circuit No. Function
A - - Not Used
B BRN 2409 Interior Park Lamps Supply Voltage
C BLK 1050 Ground
D-F - - Not Used
Junction Block - I/P - C7

GM366003Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12193922
  • 6-Way F Metri-Pack 280 Series Flexlock (CRM)
Pin Wire Color Circuit No. Function
A GRY 295 Door Lock Actuator Lock Control (AU3 w/o YE9)
B TAN 1047 PDM Class 2 Serial Data
C ORN 4240 Battery Positive Voltage (YE9)
D TAN 294 Door Lock Actuator Unlock Control (AU3 w/o YE9)
E WHT 194 Door Unlock Control (AU3 w/o YE9)
ORN 1340 Battery Positive Voltage
F LT BLU 195 Door Lock Control (AU3 w/o YE9)
DK BLU 2115 Right Turn Signal Lamps Supply Voltage (YE9)
Junction Block - I/P - C8

GM366015Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12193928
  • 6-Way F Metri-Pack 280 Series Flexlock (GRY)
Pin Wire Color Circuit No. Function
A WHT/BLK 2339 Lower Left Air Temperature Sensor Signal (CJ2)
B BRN 341 Ignition 3 Voltage - Air Temperature Actuator - Left (CJ2/CJ3)
BRN 341 Ignition 3 Voltage - Air Temperature Actuator - Right (CJ2/CJ3)
C BRN 341 Ignition 3 Voltage - Recirculation Actuator (CJ2/CJ3)
BRN 341 Ignition 3 Voltage - Mode Actuator (CJ2/CJ3)
D DK BLU 1646 Right Air Temperature Door Position Signal (CJ2/CJ3)
E WHT/BLK 1236 Right Air Temperature Door Control (CJ2/CJ3)
F DK GRN 1614 Recirculation Door Control (CJ2/CJ3)
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