1999 GMC Jimmy SL 2dr
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