GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Remote Keyless Entry System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Remote Keyless Entry

2

With the keyless entry transmitter, attempt to operate the panic function.

Do the horns, park lamps, and headlamps all pulse on and off?

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

Go to Step 3

3

Do any of the panic functions operate?

Go to Step 4

Go to Keyless Entry System Inoperative

4

Do the headlamps flash?

Go to Step 5

Go to Symptoms - Lighting Systems in Lighting Systems

5

Do the park lamps flash?

Go to Horns Inoperative in Horns

Go to Symptoms - Lighting Systems In Lighting Systems