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HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 898 (AUTOMATIC TRANSMISSION - 4L80-E/4L85-E (INTRODUCTION, SERVICE & REPLACEMENT))COMPONENT LOCATORAUTOMATIC TRANSMISSION RELATED CONNECTORS
2002 Chevrolet Avalanche 2500, RWD

Automatic Transmission Related Connectors

2002 Chevrolet Avalanche 2500, RWDSECTION Automatic Transmission Related Connectors
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.
Automatic Transmission Input Shaft Speed (AT ISS) Sensor

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162194
  • ASM 2F M/P 150.2 P2S SLD (BLK)
Pin Wire Color Circuit No. Function
A RED/BLK 1230 Transmission Input Speed Sensor Signal High
B DK BLU/WHT 1231 Transmission Input Speed Sensor Signal Low
Automatic Transmission Output Shaft Speed (AT OSS) Sensor

GM237066Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12162194
  • ASM 2F M/P 150.2 P2S SLD (BLK)
Pin Wire Color Circuit No. Function
A PPL/WHT 821 Transmission Output Speed Sensor Signal High
B LT GRN/BLK 822 Transmission Output Speed Sensor Signal Low
Transmission Range Switch, Wiring Harness Side

GM901402Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15416722 BLK
  • ASM Conn 12 F GT
Pin Wire Color Circuit No. Function
1 DK GRN 1433 Clutch Start Switch Signal
2-3 - - Not Used
4 YEL 772 Transmission Range Switch Signal B
5 BLK/WHT 771 Transmission Range Switch Signal A
6 GRY 773 Transmission Range Switch Signal C
7 BLK/WHT 451 Ground
8 WHT 776 Transmission Range Switch Signal P
9 LT GRN 275 Park Neutral Position Switch Signal
10 GRY 1524 Back-Up Lamp Supply Voltage
11 PNK 839 Ignition 1 Voltage
12 PPL 639 Ignition 1 Voltage
Tow/Haul Switch, Column Wiring Harness Side

GM35441Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12047663
  • Conn 2M M/P 150 (NAT)
Pin Wire Color Circuit No. Function
A LT BLU 553 Tow/Haul Switch Input
B BLK 1850 Tow/Haul Switch Ground
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.