Question about 2004 Oldsmobile Bravada

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Headlights dim momentarily

When leting up on the gas at night the lights have dimmed like a connection is loose. Just happened a couple of times.

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Not likely to be a loose connection. More likely and alternator problem.

Posted on Feb 21, 2009

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Headlights went dim replaced bulbs and they were fine. They went dim again within a couple days then went back to normal by themselves. Were fine for a couple weeks now are dim again?please help thnks


Sounds like a poor electrical connection - independent of the light bulbs. Many times the ground connection to the the steel frame / chassis becomes corroded resulting in a lowered voltage on the circuit (instead of 12V reaching the lamps - only 9 or 10 volts gets to them). Try gently tugging / shaking the wires at the lamp / wiring harness to see if the lamps get bright / dim again. This will help you narrow down where the loose connection lies. If you can't find the loose connection, you can also simply supplement the ground wire on the lamp circuit with another parallel wire with one end connected to the (-) post of the battery and the other to the ground wire on the head lamp. If it was a ground connection problem - this supplemental wire will solve the problem.

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