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 - Remote Keyless Entry

2

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

Do the horns, the park lamps, and the DRLs 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 horns pulse on and off?

--

Go to Diagnostic System Check - Lighting Systems in Lighting Systems

Go to Diagnostic System Check - Horns in Horns