GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Remote Keyless Entry System Check?

--

Go to Step 2

Go to Remote Keyless Entry System Check

2

Did you perform the BCM Diagnostic System Check?

--

Go to Step 3

Go to Diagnostic System Check - Body Control System in Body Control System

3

  1. Close the rear compartment lid.
  2. Turn the ignition switch to the OFF position.
  3. Press the rear compartment lid release switch located inside the instrument panel compartment.

Does the rear compartment lid open?

--

Go to Step 4

Go to Rear Compartment Lid Release System Check in Body Rear End

4

  1. Program a known good transmitter. Refer to Transmitter Programming .
  2. Remove the key from the ignition key cylinder lock.
  3. Press the rear compartment button once on the keyless entry transmitter while observing the rear compartment lid.

Does the rear compartment lid open?

--

Go to Step 10

Go to Step 5

5

  1. Close the rear compartment lid.
  2. Disconnect the RCDLR.
  3. Use a 10A fused jumper to connect between the RCDLR harness connector terminal H and ground.

Does the rear compartment lid open?

-

Go to Step 11

Go to Step 6

6

  1. Disconnect the rear compartment lid release relay.
  2. Connect a test lamp between the rear compartment lid release relay harness connector terminal A1 and ground. Refer to Release Systems Schematics in Body Rear End.

Does the test lamp illuminate?

--

Go to Step 7

Go to Step 12

7

Connect a test lamp between the rear compartment lid release relay harness connector terminal C1 and ground.

Does the test lamp illuminate?

--

Go to Step 8

Go to Step 12

8

Use a 20A fused jumper to connect between the rear compartment lid release relay harness connector terminal A2 and terminal C1.

Does the rear compartment lid open?

--

Go to Step 9

Go to Step 13

9

Use a DMM to measure the resistance between the RCDLR harness connector terminal H and the rear compartment lid release relay harness connector terminal C2.

Is the resistance within the specified range?

Less than 2 ohms

Go to Step 14

Go to Step 15

10

Replace the defective transmitter.

Did you complete the repair?

--

Go to Step 16

--

11

  1. Inspect the RCDLR connector for poor connections.
  2. If the connection is OK, replace the RCDLR.

Did you complete the repair?

--

Go to Step 16

--

12

Repair a poor connection or open in circuit 275.

Did you complete the repair?

--

Go to Step 16

--

13

Repair a poor connection or an open in circuit 56.

Did you complete the repair?

--

Go to Step 16

--

14

Replace the rear compartment lid release relay.

Did you complete the repair?

--

Go to Step 16

--

15

Repair a poor connection or an open in circuit 253.

Did you complete the repair?

--

Go to Step 16

--

16

Operate the keyless entry system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2