What wire color and circuit number connects the BCM to the Data Link Connector?

A 0.35 LT GRN wire, circuit 1037, from BCM pin B12 of connector C2 carries BCM Class 2 serial data to the DLC.

Which circuits connect the door modules to the DLC?

The Driver Door Module uses 0.35 BRN circuit 1046 and the Front Passenger Door Module uses 0.35 TAN circuit 1047, both at pin 22 of connector C2.

What wires run from the Driver Door Module to the driver door jamb switch?

Pin 3: 0.35 BRN circuit 1183; pin 18: 0.35 GRY/BLK circuit 745; pin 2: 0.35 DK BLU circuit 536; pin 15: 0.35 LT GRN circuit 262, going to the Mini Wedge door ajar and door key switches.

What does splice S601 connect to?

S601 joins the 0.35 LT GRN circuit 265 from the FPDM and routes it through connector C315 (cavity A) to either the Cargo Door Switches (w/Cargo Doors) or the Liftgate Switches (w/Liftgate).

What are the connector IDs on the Driver Door Module?

C1=4 BLK, C2=26 BLK, C3=10 BLU, C4=10 BLK, C5=12 GRN.

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Chevy Tahoe Front Door Switch Wiring Diagram – BCM, DDM, FPDM Door Ajar Circuits

Front door switches wiring diagram with color-coded wires, connectors and pin numbers

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Wiring diagram of the front door switches and door modules showing color-coded circuits, connector IDs and pin numbers.

AI caption December 2011 · Photo 11 of 15

This document is a factory-style wiring schematic titled "Front Door Switches," uploaded to a 2004 Chevrolet Tahoe gallery. It shows the Class 2 serial data and door switch circuits linking the Body Control Module (BCM), the Data Link Connector (DLC), the Driver Door Module (DDM), and the Front Passenger Door Module (FPDM). Circuit 1037 (0.35 LT GRN) carries BCM Class 2 serial data from BCM pin B12/C2 to the DLC; circuits 1046 (0.35 BRN) and 1047 (0.35 TAN) connect the DDM and FPDM (pin 22, connector C2) to the DLC. Each door module connects to a Mini Wedge (door jamb switch) assembly containing a Door Ajar Switch and Door Key Switch. Driver-side circuits include 1183 (BRN), 745 (GRY/BLK), 536 (DK BLU), and 262 (LT GRN); passenger-side circuits include 1178 (DK GRN), 746 (BLK/WHT), 537 (LT BLU), and 265 (LT GRN). Splice S601 and connector C315 route circuit 265 to Cargo Door Switches (w/Cargo Doors) or Liftgate Switches (w/Liftgate). Connector ID legend tables give cavity counts and connector colors for the BCM, DDM, FPDM, and door jamb switch connectors, making this useful for diagnosing door ajar, key switch, and interior lighting problems.

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Frequently asked questions

What wire color and circuit number connects the BCM to the Data Link Connector?: A 0.35 LT GRN wire, circuit 1037, from BCM pin B12 of connector C2 carries BCM Class 2 serial data to the DLC.
Which circuits connect the door modules to the DLC?: The Driver Door Module uses 0.35 BRN circuit 1046 and the Front Passenger Door Module uses 0.35 TAN circuit 1047, both at pin 22 of connector C2.
What wires run from the Driver Door Module to the driver door jamb switch?: Pin 3: 0.35 BRN circuit 1183; pin 18: 0.35 GRY/BLK circuit 745; pin 2: 0.35 DK BLU circuit 536; pin 15: 0.35 LT GRN circuit 262, going to the Mini Wedge door ajar and door key switches.
What does splice S601 connect to?: S601 joins the 0.35 LT GRN circuit 265 from the FPDM and routes it through connector C315 (cavity A) to either the Cargo Door Switches (w/Cargo Doors) or the Liftgate Switches (w/Liftgate).
What are the connector IDs on the Driver Door Module?: C1=4 BLK, C2=26 BLK, C3=10 BLU, C4=10 BLK, C5=12 GRN.