GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The endgate module monitors the lower left endgate latch actuator and upper right endgate latch actuator circuits. When the endgate module detects an open or short to ground on the lower left endgate latch actuator and upper right endgate latch actuator circuits, a DTC is set.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B3967 Endgate Latch Motor Circuit

Conditions for Setting the DTC

The endgate module detects a short to ground or an open on the lower left endgate latch actuator and upper right endgate latch actuator circuits.

Action Taken When the DTC Sets

    • Stores a current DTC B3967 in endgate module memory.
    • Stores a history DTC B3967 in endgate module memory.

Conditions for Clearing the DTC

    • The endgate module no longer detects a current DTC B3967 in endgate module memory.
    • The DTC is cleared using a scan tool.

Diagnostic Aids

If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections .

Test Description

The number below refers to the step number on the diagnostic table.

  1. Tests the lower left endgate latch actuator and upper right endgate latch actuator circuits for a short to ground or an open.

Step

Action

Yes

No

Schematic Reference: Body Rear End Schematics

Connector End View Reference: Body Rear End Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Test the lower left endgate latch actuator and upper right endgate latch actuator circuits for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 5

Go to Step 3

3

Inspect for poor connections at the harness connector of the endgate module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 5

Go to Step 4

4

  1. Perform the endgate window learn procedure. Refer to Control Module References for replacement, setup, and programming.
  2. Replace the endgate module. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

--

5

  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK