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GMC Jimmy Questions

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Just did full tune up . gas gauge hasn't worked for a year. Issue w/ bucking and nearly stalling,was mostly eliminated. But was the root cause , of my fuel pump exchange. Still no gauge . did coil.tps as well
Pimp pressure of old pump was holding near 50 psi. Borderline I thought..any volt readings I should know ? Maybe test at relay? Help.
Turn sigs, er flashers, park lites, back up lites, tail lites all work fine. No brake warning lite on. HELP! My 17yr old uses & please help. Thanks so much!
Sonny Wolf
Only 1 wheel spinning in 4wd & 2wd. Trans shifts into N at 4500 RPM. Can only drive it the 1.8 miles to& from workplace. Help?
Replaced battery, starter, checked all fuses, tested altenator. Why wont it start?
2nd combo switch in a year. but there is no lights the wipers work but no signals.
I AM ON MY #2 WATER PUMP REPLACEMENT.I HAVE: MEASURED LENGTH AND(CENTERED) ALL BELTS,AND TENSIONS,TROUBLE SHOT ANY OTHER PROBLEMS,THE ONLY THING LEFT IS THE FAN.THERE ARE SMALL SECTIONS OF SILICON MISSING OFF THE CENTER OFF OF THE FAN,BUT BEFORE I PURCHASE A NEW ONE(THEY'RE NOT CHEAP)I'D LIKE TO KNOW IF THIS IS A POSSIBILITY.MY "BEAST" IS A 1988 BUT YOU DONT LIST THAT YEAR.CAN YOU HELP??










For this vehicle what is the average high miles.and the most common part that needed fixing
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