tking

My brake and tail lights just quit. Turn signals work but blink quickly. If the left turn signal is on and you step on brakes, the right turn signal starts blinking and vice versa???? I've changed all the bulbs and checked all the fuses. Anyone have any ideas??

broughy84

I would try new circuit boards in the tail/turn/brake lights! I don't know if it is possible but they could be shorted and back feeding pwr to the other turnsignal when the brake is depressed. These are problematic about shorting out.

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Matthew Brough
1998 Chevrolet Venture -- 104,000 miles
1988 Chevrolet Silverado -- 156,000 miles
1996 Chevrolet Cheyenne -- 107,000 miles

J-Ri

If you have a trailer connector, make sure none of the pins inside are touching eachother

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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners

'86 3/4 ton Silverado
350 V8, 4x4, 4" lift, 1 ton axles swapped, converted to 4 wheel disc
35" BFG Mud Terrain T/As
Shortened to 109.5" wheelbase for those tight trails

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Chevy-SS

I would do as J-Ri suggests and look for wires touching each other. Also, a lot of very weird electrical problems are caused by a bad ground, or lack of a ground. Check and make sure your grounds are clean. Also check the main chassis grounds and battery ground. For a simple test, run a small ground wire right from the battery to the light socket and see if that fixes the problem.