GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

  1. Disconnect the Remote Function Actuator (RFA) module connector.
  2. Leave the key out of the ignition switch.

Is the Key In Ignition Warning Chime on?

--

Go to Step 3

Go to Step 6

3

Test CKT 1845 (LT GRN) for a short to ground.

Is CKT 1845 shorted?

--

Go to Step 4

Go to Step 5

4

Repair CKT 1845 (LT GRN).

Is the repair complete?

--

Go to Diagnostic System Check - Instrument Cluster

--

5

Replace the Body Control Module (SBM).

Is the repair complete?

--

Go to Diagnostic System Check - Instrument Cluster

--

6

  1. Leave the RFA module connector disconnected.
  2. Use a J 39200 (DMM) in order to measure the resistance from the RFA module connector terminal A9 to ground.

Is the resistance less than the specified value with the key in the ignition and infinite ohms with the key out of the ignition?

5ohms

Go to Step 11

Go to Step 7

7

  1. Disconnect C206.
  2. Use a J 39200 in order to measure the resistance from the column harness side of connector C206 terminal B8 to B4.

Is the resistance less than the specified value when the key is in the ignition and infinite ohms when the key is removed?

5ohms

Go to Step 10

Go to Step 8

8

Test for a short to ground on CKT 80 (LT GRN) within the column harness.

Does a short to ground exist in CKT 80 (LT GRN)?

--

Go to Step 10

Go to Step 9

9

Replace the ignition key warning switch.

Is the repair complete?

--

Go to Diagnostic System Check - Instrument Cluster

--

10

Repair the short to ground in CKT 80 (LT GRN) from the RFA module connector terminal A9 to C206 terminal B8.

Is the repair complete?

--

Go to Diagnostic System Check - Instrument Cluster

--

11

Replace the RFA module.

Is the repair complete?

--

Go to Diagnostic System Check - Instrument Cluster

--