1992 Gmc Sierra Type Scan Tool Check Codes On Truck Engine Light Getting

1992 GMC SIERRA
300,000 MILES
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DEVELOPER7
  • MEMBER
  • 42 POSTS
what type of scan tool do I need to check the codes on my truck? I have a check engine light on and I am getting poor gas mileage. I know that it is an older truck but it has run great.
Nov 1, 2012 at 8:17 PM
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THIS IS MIKE
  • CAR REPAIR CONTRIBUTOR
  • 686 POSTS
You will need an OBD1 scan tool. Once your computer detected a trouble code it sets the check engine light and will run in a limp mode until you replace the sensor or part that has failed. Your truck will still run but not efficiently.

Nov 1, 2012 at 8:23 PM
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CADIEMAN
  • CAR REPAIR CONTRIBUTOR
  • 3,544 POSTS
go to the parts store most will ckeck your codes.than come back.gl
Nov 1, 2012 at 9:07 PM
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