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Yukon Service Engine Light - Need Help

3 messages,  Last post on Feb 02, 2009 at 6:40 AM

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What is this discussion about? GMC Yukon XL, Electrical, SUV

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#2 of 3 Re: Need some help with a computer problem? [spendleton] by kimdvm1 May 06, 2007 (3:54 am)
Replying to: spendleton (May 02, 2007 6:41 am) Tracking down weird electrical problems can be tough. I am the farthest thing you can get from a mechanic, but here are a couple of examples with my 2000 Denali (which has 180,000 mi):   The "service engine soon" light has been coming on intermittently for 3 years. GM dealer said I needed a new catalytic converter, which at that time was over $1000. (I think since then cheaper aftermarket options have came out, but the truck continues to run fine, including the same gas mileage so I can't see replacing it). The light didn't even come on for 2 mo, now it just popped back on again. Very frustrating.   I had a weird electrical problem for a while, with some interior lights going off and a fuse that kept blowing. I didn't want to pay a small fortune to have it tracked down. FINALLY I located it to the drivers power door lock, which seemed to have a little resistance. Lubricating that door lock solved the whole problem.   I guess if the car is running OK, I'd try one more mechanic, getting a quote on what the "diagnostic" price will be. Maybe you just have a short somewhere.
#3 of 3 2001 GMC Yukon ABS light on by johnnyr4 Feb 02, 2009 (6:40 am)
I just bought a 2001 GMC Yukon and ABS light has come on. What sort of service issue does this normally indicate and average cost? Is it strictly a dealer item or can a regular garage work on it? Johnnyr4

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