GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Check if DTC B 3268 and DTC B 3267 is set in the BCM. Refer to Diagnostic System Check - Body Control System in body control system.

Is DTC B 3268 and DTC B 3267 set in the BCM?

--

Go to DTC B3267 Decklid Output Relay Short to GND/Open or Go to DTC B3268 Decklid Output Relay Short to BATT in Body Control Systems

Go to Step 2

2

Was the Rear Compartment Lid Release System Check performed?

--

Go to Step 3

Go to Rear Compartment Lid Release System Check

3

Activate the power door lock switch in one direction and then in the other direction.

Do the door locks activate?

--

Go to Step 4

Go to Step 14

4

  1. With a test light, connect between the rear compartment lid release relay terminal C2 and B+.
  2. Using a Tech 2, activate the rear compartment lid lock release actuator.

Does the test light illuminate?

--

Go to Step 6

Go to Step 5

5

  1. With a test light ,backprobe between the BCM connector C2 terminal B12 and B+.
  2. Using a Tech 2, activate the rear compartment lid lock release actuator.

Does the test light illuminate?

--

Go to Step 16

Go to Step 10

6

  1. With a test light ,backprobe between the rear compartment lid lock release actuator connector terminal A and terminal B.
  2. Using a Tech 2, activate the rear compartment lid lock release actuator.

Does the test light illuminate?

--

Go to Step 11

Go to Step 7

7

With a test light ,connect between the rear compartment lid lock release actuator terminal B and B+.

Does the test light illuminate?

--

Go to Step 8

Go to Step 14

8

With a test light ,connect between the rear compartment lid release relay connector terminal C1 and ground.

Does the test light illuminate?

--

Go to Step 9

Go to Step 15

9

  1. Using a 5 A fused jumper, connect between the rear compartment lid release relay terminal C1 and terminal A2.
  2. With a test light ,connect between the rear compartment lid lock release actuator terminal A and ground.

Does the test light illuminate?

--

Go to Step 12

Go to Step 17

10

  1. Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems for service procedure.
  2. Perform the new BCM setup procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control Systems for service procedure.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

11

Replace the rear compartment lid lock release actuator. Refer to Release Actuator Replacement for service procedure.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

12

Replace the rear compartment lid release relay.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

13

Repair the short to B+ in circuit 1540.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

14

Repair the open in circuit  350.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

15

Repair the open in circuit  1540.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

16

Repair the open in circuit  253.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--

17

Repair the open in circuit  56.

Is the repair complete?

--

Go to Rear Compartment Lid Release System Check

--