Question about 1995 GMC Sierra

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Brake lights don't work , relaced bulbs, and circuit board, all lights work including third brake light but notstop lights

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  • 6 Answers

Could be the switch under your foot pedal. They gunk up over time.

Posted on Jan 17, 2013

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 95 k1500 tail lamps dont work. turn signal and

test the wires to see if power reaches the tail light, connect a test light to the wire and the chassis, if there is power present on the wire for the tail light the problem is the bulb or the tail light unit, but if there isnt any power you have to backtrace the wire to locate the problem, probably a broken or loose wire

Posted on Jan 24, 2010

  • 414 Answers

SOURCE: rear brake lights wont work

Usually when both lights fail it is due to a poor ground wire attached to the chassis of the vehicle. This is done to save wiring and would most likely explain why the other
lights still work. Hope this is useful.

Posted on Sep 25, 2011

  • 2 Answers

SOURCE: Brake lights don't work but third brake light does

I believe the flashers are on a different circute. It sounds like a bad ground.....or one of your taillight sockets is bad. I have a cavilier that had the same problem. I went to a junk yard and found some light socket s and swopped them. So far it has been working. The third light has its own ground. tail light sockets need to have a good ground, some times the ground from batt. to block, ground frome block to frame can be bad.
Think "ground"
Don't try and buy new sockets , unless they are just like the fasctory sockets. getting the entire tail light works good. Find the main tail light, the juce comes to it first, then passes to other side. Check that dide frst. work your wat over to other side, if u cant find a problem, work your way to the front and find out where the lights are grounded.
good luck
Doug

Posted on Apr 10, 2012

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Chevrolet trucks are notorious for bad tail lamp circuit boards.

Disconnect the electrical connector from the circuit boards. Check for power at the circuit board connector (with the brake pedal depressed) on each side. The brake/turn lamp circuit for the left side is the YELLOW wire. The brake/turn lamp circuit for the right side is the GREEN wire. If there is power at the connector, check the GROUND (BLACK wires) to make sure they are getting a good ground. If the power and ground circuits are OK at the connector, replace the circuit boards.

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The module your are referring to is the circuit board located in each of the corner lamp assemblies, check on website www.compnine.com for the part number of this item. I don't believe this is your problem though.

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1 Answer

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