Rick's Free Auto Repair Advice

Headlights flicker

Fix a headlights flicker condition on Buick Rendezvous, Terrazas, Pontiac Aztek, Montana, Chevrolet Uplander

2005-07 Buick Rendezvous and Terrazas, Pontiac Aztek and Montana, Chevrolet Uplander vehicles may exhibit a headlights flicker condition and interior lights flickering issue. The problem usually shows up at idle and is due to alternator fluctuations. You may not have to replace the entire alternator however. GM has identified a fault in the voltage regulator. Install an updated regulator #25854910 to solve the problem.

voltage regulator

Updated GM voltage regulator

 

© 2012 Rick Muscoplat

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Posted on by Rick Muscoplat


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