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parman440's Garage

1999 GMC Jimmy SL 2dr

Questions & Answers

Q: Can anyone help??

My 1999 Gmc Jimmy while driving lost power. Now runs rough and throws a P0300. Don't know where to start. Someone said it is a possible head gasket. I don't have any coolant in the oil. It has a 4.3 vortec 135,000 miles

Mechanic Q: What is happening to my car and ho do I fix??

I have extreme power loss engine idles rough. Also have a P0300 code. No coolant in oil, no signs of coolant on oil cap