Question about GMC Sierra

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Where is the fuse for my back lights on my 1988 GMC sierra

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Have you checked your brake pedal switch to ensure it is working? You can short that out to check that. Off the top of my head there could be one under the hood in the engine compartment or under the dash or open both front doors and look on the ends of the dash panels. They are normally covered when the doors are closed

Posted on Apr 03, 2015

  • szanghi Apr 03, 2015

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I had an 88 gmc and my taillight problem was a bad ground from the rear lights cluster up by the spare tire to the frame

Posted on Apr 02, 2015

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Posted on Jan 02, 2017

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SOURCE: 1988 gmc sierra temp gauge

you could have an air lock in the system. Run with rad cap off and cycle the thermostat, adding coolant as required. Or a possible heater core.

Posted on Mar 05, 2009

soc21610k
  • 215 Answers

SOURCE: 1988 GMC Sierra shifts strange when cold normal when warm

You always add transmission fluid while the car is at running temps because transmission fluid expands when it's hot.

Posted on Jul 15, 2009

  • 523 Answers

SOURCE: replace neutral safety switch on a 1988 gmc sierra

Typically the Neutral Safety Switches are located with the gear selector, either in the column or the floor.

Hope this helps,
Tom

Posted on Aug 21, 2009

  • 291 Answers

SOURCE: 1988 sierra 1500 backup lights don't work. Need

actually it is very basic check the associated fuse if good go to the reverse nuetral saftey switch you should see power on a wire and when you go into reverse you will see power on two wires....let me know

Posted on Aug 31, 2009

  • 7 Answers

SOURCE: my 94 gmc sierra keeps blowing the fuse for 4wd

check wiring for cracks

Posted on Feb 21, 2010

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Try this website for resolving car problems by downloading a FREE service manual for your vehicle. This is not an owners manual but a factory mechcanic's manual.

http://ezinearticles.com/?Find-the-Free-Auto-Repair-Manual-You-Need-Online&id=92717

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actually it is very basic check the associated fuse if good go to the reverse nuetral saftey switch you should see power on a wire and when you go into reverse you will see power on two wires....let me know

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it seems you have a short in either one of the lights or interlock. all are connected to the same fuse. trace the wiring from the fuse box back to the component. Using a test light test in between the wires. check for any obvious breaks in the wiring.

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