GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Body Rear End Schematics

1

Did you perform the DiagnosticSystem Check for Body Rear End?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

2

Press the trunk release button on the driver's door.

Does the deck lid open?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF, car in PARK.
  3. With a scan tool, view the Trunk Release Relay parameter in the RIM data list.
  4. Operate the trunk release switch.

Does the parameter change state?

Go to Step 6

Go to Step 4

4

  1. Disconnect the trunk release switch.
  2. With a scan tool, view the Trunk Release Relay parameter in the RIM data list.
  3. Connect a 3 Amp fused jumper between the trunk release switch signal circuit and a good ground.

Does the parameter change state?

Go to Step 5

Go to Step 9

5

  1. With a scan tool, view the Trunk Release Relay parameter in the RIM data list.
  2. Connect a 3 Amp fused jumper between the trunk release switch signal circuit and the trunk release switch ground circuit.

Does the parameter change state?

Go to Step 11

Go to Step 8

6

  1. Disconnect the rear compartment lid release actuator.
  2. Connect a test lamp between the rear compartment lid release actuator control voltage circuit of the rear compartment lid release actuator and a good ground.
  3. Command the Trunk Release Relay ON.

Does the test lamp turn ON for 1 second?

Go to Step 7

Go to Step 10

7

  1. Connect a test lamp between the rear compartment lid release actuator control voltage circuit of the rear compartment lid release actuator and the rear compartment lid release actuator ground circuit of the rear compartment lid release actuator.
  2. Command the Trunk Release Relay ON.

Does the test lamp turn ON for 1 second?

Go to Step 14

Go to Step 17

8

Test the ground circuit of the trunk release switch for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 12

9

Test the trunk release signal circuit of the trunk release switch for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 12

10

Test the rear compartment lid release actuator control voltage circuit of the rear compartment lid release actuator for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 13

11

Inspect for poor connections at the harness connector of the trunk release switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 18

12

Inspect for poor connections at the harness connector of the Drivers Door Switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 19

13

Inspect for poor connections at the trunk release relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 20

14

Inspect for poor connections at the harness connector of the rear compartment lid release actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 21

15

Inspect for poor connections at the harness connector of the Rear Integration Module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 23

Go to Step 22

16

Repair the short to ground in the control circuit of the trunk release relay . Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

--

17

Repair the high resistance or open in the ground circuit of the rear compartment lid release actuator. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 23

--

18

Replace the trunk release switch.

Did you complete the replacement?

Go to Step 23

--

19

Replace the drivers door switch. Refer to Front Door Switch Replacement in Doors.

Did you complete the replacement?

Go to Step 23

--

20

Replace the trunk release relay.

Did you complete the replacement?

Go to Step 23

--

21

Replace the rear compartment lid release actuator. Refer to Rear Compartment Lid Replacement .

Did you complete the replacement?

Go to Step 23

--

22

Replace the RIM. Refer to Rear Integration Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 23

--

23

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3