GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Power Door Locks System Check?

--

Go to Step 2

Go to Power Door Locks System Check

2

  1. Disconnect the body control module (MALL) module connector C2.
  2. Use a digital mutimeter (DMM) set to the ohms scale in order to backprobe the inoperative front power door lock switch connector from terminal C (RED/BLK) to ground.
  3. Press the inoperative front power door lock switch to the LOCK position.

Is the resistance within the specified range while the switch is pressed?

0-5 ohms

Go to Step 3

Go to Step 4

3

Repair the open in CKT 780 (RED/BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

4

Inspect for poor terminal contact at the inoperative front power door lock switch connector. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.

Is the terminal contact OK?

--

Go to Step 6

Go to Step 5

5

Repair the terminal contact at the front power door lock switch connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

6

Replace the inoperative front power door lock switch. Refer to one of the following procedures:

Is the repair complete?

--

Go to Power Door Locks System Check

--