GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Did the high beam headlamps operate properly?

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Go to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges, and Console

Go to High Beam On with Headlamp Switch Off