GM Service Manual Online
For 1990-2009 cars only

Endgate Window Release Inoperative Except Luxury

Step

Action

Value(s)

Yes

No

1

Has the Endgate Release System Check been perofrmed?

--

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 in Instrument Panel, Gauges, and Console.

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. Refer to Liftgate Window Release Actuator Replacement .

Is the repair complete?

--

Go to Endgate Window Release System Check

--

16

Replace Park/Netural Position Switch. Refer to Park/Neutral Position Switch Replacement in Transmission/Transaxle.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

Endgate Window Release Inoperative Luxury

Step

Action

Value(s)

Yes

No

1

Has the Endgate Release System Check been performed?

--

Go to Step 7

Go to Endgate Window Release System Check

2

  1. Disconnect connector C221 at convenience center
  2. Connect a test lamp between cavity E1 of convenience center 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 7

Go to Step 4

4

Connect a test lamp between liftgate release switch cavity C and ground.

Does test lamp light?

--

Go to Step 5

Go to Step 6

5

Replace liftgate release switch. Refer to Accessory Switch Replacement in Instrument Panel, Gauges, and Console.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

6

Locate and 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

--

7

Locate and 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

--

8

  1. Ensure transmission is in PARK.
  2. Connect a DMM, set on Ohms, between convenience center cavity E2 and ground.

Is continuity present?

--

Go to Step 14

Go to Step 9

9

  1. Disconnect connecter C1 at park netural position switch.
  2. Connect a DMM, set on Ohms, between connecter C1 cavity D and ground.

Is continuity present?

--

Go to Step 11

Go to Step 10

10

Locate and repair open in CKT 150 (BLK) between park netural position switch and ground. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

11

Connect a DMM, set on ohms, between park netural positon switch connecter C1 cavity A and convenience center cavity E2.

Is there continuity?

--

Go to Step 12

Go to Step 13

12

Replace park netural position switch. Refer to Park/Neutral Position Switch Replacement in Transmission/Transaxle.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

13

Locate and repair open in CKT 1737 (YEL) between park netural position switch and convenience center. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

14

Connect a DMM, set on ohms, between convenience center cavity E2 and cavity B at liftgate release motor.

Does test lamp light?

--

Go to Step 16

Go to Step 15

15

Locate and repair open in CKT 1737 (YEL) between convenience center and liftgate release motor. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Endgate Window Release System Check

--

16

Replace liftgate release motor. Refer to Liftgate Window Release Actuator Replacement .

Is the repair complete?

--

Go to Endgate Window Release System Check

--