Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
The two most common causes of hesitation on these vehicles are Throttle position sensor and MAP sensors. Both can be checked with a lab scope, but aon a truck this old you have to weigh whether the money is better spent on two new components rather than testing costs.
if the fuel filter is more than one year old a new fuel filter would be a smart maintenance item as well.
if none of this solves your problem, then the truck will need to be scanned to see what is happening when it hesitates.
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these parts run pretty cheap, under $100 for both, is this a fairly easy repair or to much to handle for a do it yourselfer like me, i used to do autobody so i know my way around under the hood a little bit
Yes thats correct. An hour of diagnostic time would cost more than that and it won't hurt to freshen up 14 year old parts
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Sorry for the delay. I was off line for awhile.
An engine runs richer when cold and that will prevent hesitation in itself.
Two screws and a vacuum hose is all that is involved with the MAP sensor. Its usually on the firewall, or sometimes mounted on the air cleaner
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