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1994 GMC Jimmy - Page 6 Questions & Answers
Not running
could it be the fuel cut off switch or the cats are going have you run cheap fuel in it. it kills the cats
Heater
you have a vacuum leak most likely inside the car if you can hear the hissing sound.check under the passenger side kick panel for the leak.
97 GMC JIMMY OIL PRESSURE DROPS WHEN STOPPED
This is usually caused by wear on the main bearings. To be sure it is actually dropping need to check with a manual gauge if so you can replace the main crankshaft bearings and while in there replace oil pump as you will have it off.
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