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1996 GMC Sierra - Page 6 Questions & Answers
Rough idle, no power in gear
Yes it could be just the plugs wires and dist cap. I'm surprised the check engine light is not on because of the missing cat. Be sure and clear the codes after you replace the ignition parts.
Truck wont start
Try spraying some starter sray in the breather and if it cranks, but only runs on the sray you may have a fuel or glow plug problem.
Starting problem
Do a compression check (motor hot Accelerator fully depressed) If you need starter fluid to start it indicates worn motor.
96 gmc brake lights not working
Did you use a test light to diagnois problem ? check that you have power coming to brake switch from fuse and then see if it switdches over when you apply brake. sounds like it isn't adj. right if it won't come out of Park. I will tell you this...there is a 6way plug by steering column ,follow brake sw wires up to top of column and that is where the 6 way plug is, make sure this plug is plugged in tight and square, because if not you will be chasing the problem forever..brakes run through this plug, it is easiest seen by removing lower column close out to dash and metal bolster brkt behind it to get to plug.
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