GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC Suburban - 2WD 🢒 Body and Accessories 🢒 Doors 🢒 Power Door Locks Switch Inoperative -Rear

Step

Action

Value(s)

Yes

No

1

Has the Power Door Locks System Check been perforemd?

--

Go to Step 2

Go to Power Door Locks System Check

2
  1. Open the rear cargo doors.
  2. Connect a J 35616-200 test lamp between CKT 294 (TAN) or CKT 295 (GRY) at the cargo door contactor.
  3. Move one power door lock switch to the LOCK position and the UNLOCK position.

Does the test lamp light in both positions?

--

Go to Step 3

Go to Step 5

3
  1. Close the cargo doors.
  2. Connect a J 35616-200 test lamp from CKT 295 (GRY) at the rear cargo door lock motor connector to ground.
  3. Move one power door lock switch to the LOCK position.

Does the test lamp light?

--

Go to Step 4

Go to Step 6

4
  1. Connect a J 35616-200 test lamp from CKT 295 (GRY) to CKT 294 (TAN) at the power door lock motor.
  2. Move the power door lock to the LOCK position.

    3. Observe the test lamp.

  3. Move the power door lock to the UNLOCK position.

    4. Observe the test lamp.

Does the test lamp light in both positions?

--

Go to Step 7

Go to Step 8

5

Repair the open in CKT 294 (TAN) or in CKT 295 (GRY) from the contactor to splice S260 or to splice S258. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

6

Locate and repair the open in CKT 295 (GRY) from the power door lock motor to the contactor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

--

7

Replace the cargo door lock motor?

Is the repair complete?

--

Go to Power Door Locks System Check

--

8

Repair the open in CKT 294 (TAN) from the power door lock motor to the contactor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Power Door Locks System Check

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