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G1500

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Question
When I start my truck it's idling high and when I'm driving the rpm fluctuate up and down and the transmission doesn't want to
Hello. It sounds like you may have a vacuum leak. This engine is notorious for vacuum leaks from a bad intake manifold gasket. This is very common. It can also be from the MAP sensor or a number of other...
Question
Rough cold start 1988 GMC G1500
Hello - first task is to check for problem codes from engine management for any clues. This involves a paper clip, and a flashing "Check Engine" light for 2-digit problem codes. Possible problems include incorrect fuel pressure (bad fuel pressure...
Question
My truck is getting no spark
Hi there. If you are not getting ignition spark at all, the problem is typically going to be caused by a malfunctioning ignition coil or distributor. Depending on how severe the backfire might have been, it is possible that it...

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