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Check Engine Soon Light
1996 GMC Truck
Service engine light came on oil pressure goes up when throttle goes up and then goes back to normal when let off
Saturday, February 12th, 2011 AT 12:31 AM
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
Saturday, February 12th, 2011 AT 12:40 AM
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