Electrical problem

Asked by Dwiggins Mar 26, 2012 at 04:01 PM about the 2007 Chevrolet Silverado 2500HD LTZ Extended Cab 4WD

Question type: Maintenance & Repair

The lights flicker when braking,cruse turns off when using blinker.Turn on high beam lights and transmission down
shifts from 6th to 2nd gear. All gauges lose power. This last a short time then returns to normal. When cranking
there is no power. A clicking noise is heard in both door panels. Horn will only click when used  then after a few tries
it will sound and all power is returned. These problems come and go. Had BCM updated with no results. What can I
do to find the problem.

6 Answers

Mamm answered 11 years ago

I just bought a used truck with same issue and will return it unless there is a simple fix. Anyone have any solutions?

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30

GuruZDB2N answered 6 years ago

Have a 03 chevy Silverado 2500HD reduced power comes on the dash replaced the throttle body and all sensors, it went away for always but now it came back on after a few weeks go to start it and it goes right into reduced powers saying low coolant but I have coolant. Then when I turn my high beams on the whole truck shuts down I honestly have no idea what the hell it is

3 people found this helpful.
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GuruW5PGY answered 6 years ago

Start truck, no gauges are working, drive a mile or so, everything comes on. At times the 4 wheel drive will be in the neural position, will not slow you too switch

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