engine

2003 GMC SIERRA
140,600 MILES • V8 • 4WD • AUTOMATIC
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SMITTE
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I have a 2003 GMC Z71 pickup truck with 140,600 miles on it. What should the oil pressure gauge read? it is now jumping between 0 and 80 and the check engine light has just come on. Oil level is good, water level is good now, was a little low. Thoughts?
Jun 12, 2011 at 11:07 PM
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RASMATAZ
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Scanned the computer for code/s and Check the oil pressure with a mechanical gauge,if normal replace the oil pressure switch. If abnormal could mean oil pump and engine bearing.
Jun 13, 2011 at 12:45 AM
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