GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Content Theft Deterrent (CTD) System Check performed?

--

Go to Step 2

Go to Content Theft Deterrent (CTD) System Check

2

Does the horn operate properly?

--

Go to Step 3

Go to Horns System Check in Horns

3

Connect a 3 amp fused jumper wire between CKT 28 (BLK), terminal E2 at the remote function actuator (RFA) module and ground.

Does the horn operate?

--

Go to Step 4

Go to Step 5

4

Replace the RFA module.

Remote Control Door Lock Receiver Replacement in Keyless Entry.

Is the repair complete?

--

Go to Content Theft Deterrent (CTD) System Check

--

5

Repair the open in CKT 28 (BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Content Theft Deterrent (CTD) System Check

--