GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Has the Endgate Release System Check been performed?

--

Go to Step 2

Go to Endgate Window Release System Check

2

  1. Disconnect C210 at Convenience Center.
  2. Connect a test lamp between Convenience Center cavity E5 and ground.
  3. Depress Liftgate Release Switch.

Does test lamp light?

--

Go to Step 8

Go to Step 3

3

  1. Connect a test lamp between Liftgate Release Switch cavity D and ground.
  2. Depress Liftgate Release Switch.

Does test lamp light?

--

Go to Step 4

Go to Step 5

4

Repair open in CKT 1576 (BLK) between Liftgate Release Switch and Convenience Center. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

5

Connect a test lamp between Liftgate Release Switch cavity C and ground.

Does test lamp light?

--

Go to Step 6

Go to Step 7

6

Replace Liftgate Release Switch. Refer to Accessory Switch Replacement .

Is the repair complete?

--

Go to Endgate Window Release System Check

--

7

Repair open in CKT 640 (ORN) between Liftgate Release Switch and I/P Fuse Block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

8

  1. Connect a test lamp between Liftgate Release Motor cavity A and ground.
  2. Depress Liftgate Release Switch.

Does test lamp light?

--

Go to Step 10

Go to Step 9

9

Repair open in CKT 1576 (BLK) between Liftgate Release Switch and Liftgate Release Motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

10

  1. Place transmission in Park or Netural.
  2. Connect a test lamp between Liftgate release motor cavity B and B+.

Does test lamp light?

--

Go to Step 15

Go to Step 11

11

Connect a test lamp between Park/Netural Position Switch C1 cavity A and B+.

Does test lamp light

--

Go to Step 12

Go to Step 13

12

Repair open in CKT 1737 (YEL) between Lifgate Release Motor and Park/Netural Position Switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

13

Connect a test lamp between Park/Neutral Position Switch Connector C1 cavity D and B+.

Does test lamp light?

--

Go to Step 16

Go to Step 14

14

Repair open in CKT 150 (BLK) between Park/Netural Position Switch and G105. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

15

Replace Liftgate Release Motor.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

16

Replace Park/Netural Position Switch.

Is the repair complete?

--

Go to Endgate Window Release System Check

--