GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Power Door Lock System Check performed?

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Go to Step 2

Go to Power Door Locks System Check

2

Backprobe the power door lock control module with a DMM from terminal 6 to ground.

Does the voltage measure greater than the specified value?

10 V

Go to Step 4

Go to Step 3

3

Test for an open in the WHT/GRN wire between the power door lock control module and the junction block.

Was an open found?

--

Go to Step 6

Go to Step 7

4

Test for an open in the BLK wire between the power door lock control module and G203.

Was an open found?

--

Go to Step 6

Go to Step 5

5

    • Test for an open in the BLU wire between the power door lock control module and S307
    • Test for an open in the BLU/RED wire between the power door lock control module and S308

Was an open found?

--

Go to Step 6

Go to Step 8

6

Repair the open in the wire. Refer to Wiring Repairs in wiring systems.

Is the repair complete?

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Go to Power Door Locks System Check

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7

Replace the junction block.

Is the repair complete?

--

Go to Power Door Locks System Check

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8

Replace the power door lock control module.

Is the repair complete?

--

Go to Power Door Locks System Check

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