GM Service Manual Online
For 1990-2009 cars only

Garage Door Opener Inoperative

Step

Action

Value(s)

Yes

No

1

Did the Garage Door Opener symptom table bring you here?

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Go to Step  2

Go to Symptoms

2

  1. Disconnect connector C2 in the Overhead Console.
  2. Test for Battery Voltage with DMM from cavity C to ground.

Is Battery Voltage present?

B+

Go to Step  8

Go to Step  3

3

Test for Battery Voltage with DMM from (BCM) Body Control Module connector C2 cavity B12 to ground.

Is Battery Voltage present?

B+

Go to Step  4

Go to Step  5

4

Repair OPEN in CKT 1732 (ORN) between S258 connector C2 of Overhead Console.

Is the repair complete?

--

Go to Step  11

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5

  1. Remove wire 1732 (ORN) from cavity B12, connector 2 of the (BCM) Body Control Module.
  2. Test for Battery Voltage with DMM from pin B12, connector C2 of the BCM to ground.

Is Battery Voltage present?

B+

Go to Step  6

Go to Step  7

6

Repair OPEN in CKT 1732 (ORN) between BCM and the Overhead Console.

Is the repair complete?

--

Go to Step  11

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7

Refer to the (BCM) Body Control Module Diag nostic System Check Diagnostic System Check - Body Control System in Body Control Systems.

Is the repair complete?

--

Go to Step  11

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8

Test CKT 1350 (BLK) for continuity between Console C2 cavity D and G400

Is continuity present?

--

Go to Step  9

Go to Step  10

9

Replace Overhead Console Refer to Garage Door Opener Module Replacement

Is the repair complete?

--

Go to Step  11

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10

Repair OPEN in CKT 1350 (BLK) between Overhead Console and G400.

Is the repair complete?

--

Go to Step  11

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11

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step  2