GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire Headlights System Check performed?

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Go to Step 2

Go to Headlight System Check

2

Do the high beam headlamps operate properly?

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Go to Diagnostic System Check - Instrument Cluster

Go to Headlamps Inoperative - High Beams