GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

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

--

Go to Step 2

Go to Diagnostic System Check - Remote Keyless Entry

2

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

Did the horns, hazard flashers, and the interior courtesy lamps all pulse on and off?

--

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

Go to Step 3

3

Do the horns, hazard flashers, and the interior courtesy lamps all fail to pulse on and off?

--

Go to Keyless Entry System Inoperative

Go to Step 4

4

Do the horns and hazard flashers both pulse on and off, but not the interior courtesy lamps?

--

Go to Courtesy Lamps Inoperative in Lighting Systems

Go to Step 5

5

Do the horns and the interior courtesy lamps both pulse on and off, but not the hazard flashers?

--

Go to Hazard Lamps Inoperative in Lighting Systems

Go to Horns Inoperative in Horns