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2002 Yukon

8065 Views 16 Replies 6 Participants Last post by  unplugged
I have an 02 Yukon with about 50k miles. The service engine soon light came on (Flashing at first then went steady). Plugged a computer in and got code P0305 (Misfire #5). I changed all the wires and #5 plug and coil. Light continued to flash after reseting computer. Originally I could not feel any difference in the truck. Then it got progressively worse(Truck shuttering and very rough idle) I brought it to my local mechanic who put his computer on it and found multiple misfires on almost all cylinders. He checked the fuel nozzles and systems and it checked good. Has anyone have any idea's on what this could be or better yet has anyone had this problem. I am thinking it's the computer or a faulty ground. Thanks for your help
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You've been fleeced

Well I finally got the Yukon back from the shop after 2 weeks. It turns out that I had a soldered wire that was loose and was causing a short to ground. It ended up frying the #5 injector. They resoldered the wire connection and replaced the injector and now the truck runs perfect.
I'd fire the first mechanic. Someone who just swaps parts until the problem goes away is not a very good mechanic. Especially when they can't fix the problem and you have to take it to someone competent.

Part of the problem is the fault of the consumer. When a service writer or mechanic writes up the service order, make sure that what you are paying for is to fix the problem, not to swap parts.

In other words if your car is having trouble starting, make sure that is what is on the service order. If the mechanic calls you and says it needs a new starter, agree to have him replace the starter, only if it fixes the starting problem. Don't pay for a starter if you don't need one.

If your mechanic says something like: "It's probably the starter, besides your car has 50k miles on it, so it could use a new starter anyway" tell him you'll be right down to take your car to someone who knows what they are doing.

Don't get ripped off by so called mechanics. A good mechanic will troubleshoot and isolate your problem, not just swap parts till it's gone, or you run out of money.
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Actually, the garage I take it to is a family owned business and the other garage they sent it to was a relative who is a GM master technician. To be honest I have never had to use a garage before because being a Aircraft Technician I have always be able to do the work myself. This problem thru me for a loop and that is way I sent it to them. I estimated that they put in over 30 hours of labor but only charged me for 5. All the parts that they swapped were off the owner's 02 tahoe.They only charged me for the fuel injector which was a little over $100. The whole bill was $600 and change. Considering the amount of time they worked on it and the low bill, I would consider them to be one of the best garage's I have seen. I estimate the dealer would have charged 2 times as much.
Oh, and they also offered me a free loaner car but I have a extra car at home so I declined.
Sounds like a great shop. As always when you find a good mechanic, hang onto 'em.:biggrin:
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