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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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#1 of 3 Need some help with a computer problem? by spendleton May 02, 2007 (6:41 am)
I have a 2001 Yukon XL with 160K miles on it. About two years ago the warning lights started acting up. The "Service Engine Soon" light will come on and stay on almost all the time. The parking brake light goes on and off, even though the brake is released. The ABS light stays on all the time. I had it checked by a GM trained mechanic. He said the Engine light is showing some evap codes, but he checked downstream and those components are ok. He can't explain the parking brake light, and he says the ABS system is working ok too. I just moved to Texas and I can't get the car inspected and then registered unless these problems are all fixed. Any ideas out there about what's going on? When I take it to the shop what should I be looking out for? The car is serviceable, but I'd hate to dump $2-3000 into it. I don't know any of the mechanics in Texas, so I have no way of knowing if they are going to try to take me for a ride. Appreciate the help. Replies to this message: kimdvm1 (May 06, 2007 3:54 am)
#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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