GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Pulldown System Check ?

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Go to Step 2

Go to Pulldown System Check

2

  1. Disconnect the Rear Compartment Lid Pull Down Motor.
  2. Press and hold the Rear Compartment Lid Release Switch.
  3. Connect a test lamp between terminal A and terminal B of the Rear Compartment Lid Pull Down Motor.

Does the test lamp light?

--

Go to Step 9

Go to Step 3

3

Connect a test lamp between terminal A of the Rear Compartment Lid Pull Down Motor and ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 7

4

Does the rear compartment lamp light:

--

Go to Step 6

Go to Step 5

5

  1. Disconnect the Rear Compartment Lid Release Switch.
  2. Connect a test lamp between terminal B of the Rear Compartment Lid Release Switch, and terminal A of the Rear Compartment Lid Pull Down Motor.

Does the test lamp light?

--

Go to Step 10

Go to Step 8

6

Test for an open or short in CKT 138 (RED).

Did you find and correct the condition?

--

Go to Pulldown System Check

Go to Step 10

7

Repair the open or short in CKT 1440 (ORN). Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Pulldown System Check

--

8

Repair the open in CKT 1150 (BLK).

Did you find and correct the condition?

--

Go to Pulldown System Check

--

9

Test the rear pull down connector for proper terminal contact. Refer to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Pulldown System Check

Go to Step 11

10

Test the rear compartment lid release switch terminal for proper contact. Refer to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Pulldown System Check

Go to Step 12

11

Replace the Rear Compartment Lid Pull Down Motor. Refer to Pulldown Unit Replacement - Rear Compartment Lid .

Is the replacement complete?

--

Go to Pulldown System Check

--

12

Replace the Rear Compartment Lid Release Switch. Refer to Rear Compartment Lid Lock Actuator Replacement .

Is the replacement complete?

--

Go to Step 13

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13

  1. Make sure any components removed during diagnosis are installed in place and that all connectors are connected.
  2. Repeat the system check. Refer to Pulldown System Check .

Is the system check complete?

--

System OK

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