Whats wrong

1996 GMC TRUCK
16,300 MILES • 2WD • AUTOMATIC
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SHALLON
  • MEMBER
  • 2 POSTS
service engine light came on oil pressure goes up when throttle goes up and then goes back to normal when let off
Feb 11, 2011 at 4:31 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Check the oil pressure with a mechanical gauge,if normal replace the oil pressure switch. If abnormal could mean oil pump and engine bearing.

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on
Feb 11, 2011 at 4:40 PM
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