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Discussion Starter #1
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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Clogged cat maybe?

When it starts running like crap, just look underneath, if the converter is glowing that’s your problem.

If it is, it should still be under warranty. Emitions (SP) standards have 7 years 100k miles. By the EPA.
 

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Yeah, that's a thinker because it's like it's spreading and getting worse. Over what time period did it gradually get worse?
 

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Discussion Starter #4
It was a total of 2 weeks from when the original "Service Engine Soon" light came on to when it was really bad. I thought the "Cat" also but my mechanic has not yet looked into that. i dropped the truck off thursday night so he only had a chance to look at it friday. Hopefully I will no more tomorrow. I will update you guys when I find out more info. Thanks
 

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ahh, you got caught over the 3 day weekend. Let us know what he finds out.
 

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Discussion Starter #6
Update. well I wish I had some info for you guys but my mechanic is stumped and sent it off to another garage where a GM master Tech works. He has checked everything (Coils,wires,plugs,fuel nossles,compression,wiring from the coils,crank shaft sensor) and it all checks out good. We are down to either Intake manifold, computer or engine. I really would like to contact GM about this matter when I have it resolved and express my displeasure with there truck. This is the first GM vehicle I have ever owed and right now it probably will be my last. I have heard that sometimes GM will warranty vehicles even though they are out of warranty. Has anyone ever seen or heard of this?
Tahoe Parts
 

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Discussion Starter #7
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.
 

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Where was the loose wire at?
 

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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.
Chevy Parts
 
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It's too bad when that kind of thing happens. I did have a similar issue but the mechanic (actually transmission repair tech) swapped parts to isolate, but never actually charged me for the parts or the labor, until he fixed the actual problem.
It was kind of an inconvenience, since it took a few weeks. I would drive it, and let him know what was happening. But he made it his mission, and since I didn't pay for extras I didn't mind.
 

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Discussion Starter #11 (Edited)
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.

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.
 

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tahoe

Well it looks like everybody is happy and you got your Chevy back. I take it you will remain a chevy owner for wile again. I think you will be satisfied. Good luck.

PS: Keep up the maintenance and the truck will run “LIKE A ROCK"
 

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Discussion Starter #13
Well I have not decided yet on what I am going to do with the Yukon. My wife wants a new car and we really don't have the money for another payment so I might trade the Yukon and get something in that price range(what ever I get for the Yukon). I then will go around looking for a used truck to use till the summer. For the summer I ride my Motorcycle pretty much everywhere.
 

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Discussion Starter #15
I have a 1999 Yamaha Royal Star V-4 (1300cc). By far the best bike I have owned and rode. Has a windshield which I thought I would never have on a bike but now that I have one I don't think I could ever ride without one again.
I had a 94 Kawasaki Vulcan before the Star. Been riding since I was 15.
 

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Nice bike. I myself have only owned sport bikes so far but i would like to have a cruser in the future. Two years ago i was in Florida for a two week vacation and rented a Dana Low Rider and enjoyed myself.
 

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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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