GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Astro - 2WD 🢒 Body and Accessories 🢒 Body Rear End 🢒 Power Door Locks Inoperative - Rear Door

Power Door Locks Inoperative - Rear Door Liftgate

Step

Action

Value(s)

Yes

No

1

Did the Power Door Lock System Check bring you here?

--

Go to Step 2

Go to Power Door Locks System Check

2
  1. Disconnect the rear door lock motor connector at the door latch.
  2. Connect a test lampJ 35616-200 between the TAN (294) wire cavity A of the motor connector and ground.
  3. Press any of the door lock switches to the Unlock position.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

Repair the open in CKT 294 (TAN) between the rear door lock motor and splice S334.

Is the repair complete?

--

Go to Power Door Locks System Check

--

4
  1. Connect a test lampJ 35616-200 between the GRY (295) wire cavity B of the motor connector and ground.
  2. Press any of the door lock switches to the lock position.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

5

Repair the open in CKT 295 (GRY) between the rear door lock motor and splice S335.

Is the repair complete?

--

Go to Power Door Locks System Check

--

6

Replace the rear door lock motor.

Is the repair complete?

--

Go to Power Door Locks System Check

--

Power Door Locks Inoperative - Rear Door Cargo Doors

Step

Action

Value(s)

Yes

No

1

Did the Power Door Locks System Check bring you here?

--

Go to Step 2

Go to Power Door Locks System Check

2
  1. Disconnect the remote control door lock receiver.
  2. Press any of the door lock switches to the unlock position.
  3. Connect a fused jumper from the remote control door lock receiver CKT 246 (TAN) wire cavity G to ground. Keep the jumper connected for the remainder of this test.

Does the rear power door lock motor lock?

--

Go to Step 3

Go to Step 4

3

Replace the remote control door lock receiver. Refer to Receiver Replacement in Keyless Entry.

Is the repair complete?

--

Go to Power Door Locks System Check

--

4
  1. Disconnect the rear door lock motor connector.
  2. Connect a test lamp J 35616-200 from CKT 295 (GRY) wire cavity A to ground with either power door lock switch held in the lock position.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5
  1. Connect a test lamp J 35616-200 between CKT 246 (TAN) wire cavity B and CKT 295 (GRY) wire cavity A at the rear door lock motor.
  2. Press any of the door lock switches to the lock position.

Does the test lamp light?

--

Go to Step 7

Go to Step 8

6

Locate and repair the open in CKT 295 (GRY) wire between the rear door lock motor and S316.

Is the repair complete?

--

Go to Power Door Locks System Check

--

7

Replace the rear door lock motor.

Is the repair complete?

--

Go to Power Door Locks System Check

--

8

Locate and repair the open in CKT 246 (TAN) wire from the rear door lock motor connector to the remote control door lock receiver connector.

Is the repair complete?

--

Go to Power Door Locks System Check

--