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Prev Professional Automotive Repair Technical Discussions for August 15, 2013
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Open Help Requests for GM
Help Request Answers
2001 Cadillac Seville STS 4.6L Traction /ABS VIN: 1G6KY54921
Customer complained of "all" ABS, BRAKE and traction lights cumming on and e brake not releasing. Car would also have light come on while driving some times. On the first go round several codes popped up referencing the rear control module. (sorry I do not rec...
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2007 Cadillac DTS 4.6L Misfire, MIL Lamp on VIN: 1G6KD57907
To all valued techs This caddy has a misfire between 1500 to 2000 rpm only on bank 1.It sets P0300 but on the misfire screen on tech2 you can see misfire counter climb on 1 3 5 7 cylinders but you do not feel a misfire. When that happens the fuel trim goes i... Trouble codes: P0300 (multiple misfire bank 1 on this car)
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1991 Chevrolet Camaro RS 3.1L Poor Idle Quality, Hesitation, Stall VIN: 1G1FP23T9M
Ok...I got another lovely one here. 1991 camaro with the 3.1L engine. Vehicle has a bad shake at idle when put in gear. Feels like it has no power. If i back it out or try and drive it around the shop, it stalls out, and I have to feather the throttle to keep ... Trouble codes: 13 (02 Sensor)
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1997 Chevrolet S10 4.3L alternator and cluster
hello fellow techs,I have an issue with a 97 s10 that at random blows the 10 amp gauges fuse. When this happens it shuts down cluster and alternator stops charging.I understand why alternator needs that fuse to operate charging system properly but am having di...
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1999 Chevrolet K2500 5.7L MIL Lamp on
customer replaced fuel pump before we got involved. long term fuel trims 25% on both banks at idle. Smoked entire intake and found no leaks. Replaced maf twice, no change for better. Wondering if fuel pressure is too low or if injectors are starting to get res... Trouble codes: P0171 (lean bank 1), P0174 (lean bank2)
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2002 Chevrolet Suburban 1500 LS 5.3L Battery VIN: 3GNFK16ZX2
Heavy parasitic load killing battery overnight. When I hook up the battery there is a strong spark and a clunking noise coming from the transfer case/transmission area. I unplugged the Ignition switch thinking part of it was stuck on but no change. Unplugged e...
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2004 Chevrolet Silverado 2500 HD 6.6L Injector Knock VIN: 1GCHK23194
Customer requested to replace all eight fuel injectors. The dealer told him he needed 4 (due to smoke)so he wanted all eight replaced. We found debris (slug?) in #4,6 & 8. After replacing the injectors and cleaning all the tubes and rails. The truck runs like ...
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2005 Chevrolet Silverado 2500 HD 6.6L Excessive Emissions, Hesitation, Poor Fuel Economy VIN: 1GCHK232X5
Thank you to everyone who tries to help me here. I have this Duramax that is a real pain. I can find many cases of this same issue on the forums all over the internet but none of them have the solution. This truck is a dog off the line while warming up. Once i... Trouble codes: P0101 (Maf sensor performance), P0299 (Turbo charger under boost), P0401 (Egr flow insifficient), P0404 (Egr position sensor open), P1404 (Egr closed position performance), P0045 (Turbo charger boost control solenoid)
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2001 GMC Sonoma SL 4.3L 3 monitors wont run VIN: 1GTCS19W21
HELP guys, I have this 01 GMC sonoma here with a 4.3 lt, I just cant get it to run the sencondary air, cat and evap monitors, changed the evap vent solonoid because of it not working, smoked system, good, o2 sensors are switching good, cat seems to be working ...
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2006 Hummer H3 3.5L No Start VIN: 5GTDN13696
This vehicle is an intermittent no-start. I finally witnessed it not staring today. It will crank but not start. I did not have a fuel pressure gauge to test fuel pressure. I do have cranking RPM, fuel inj.pulse width data and the anti-theft is o.k. The timing...
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1995 Pontiac Firebird Formula 5.7L Bad scaner waveforms VIN: 2G2FV22P6S
Code 33 is setting at idle because the engine is not producing enough vacuum to satisfy F.R.E.D., however there is enough to operate the brake booster. We have been test driving the car and preparing to deliver it back to our customer when the engine data we... Trouble codes: 33 (manifold absolute pressure sensor circuit high)
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2006 Saturn Vue 2.2L Interior VIN: 5GZCZ33D76
Customer came in with intermittent problem of no turn signals, power windows, power locks, and no a/c operation. We replaced the ignition lock cylinder last week and the problems surfaced shortly after.
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Fixes & Summaries for GM
Fix/Summary Answers
2006 Saturn Ion-2 2.2L Steering pump
Well this one will be fixed from dealer on Monday. It turned out to be the motor which is under warranty. Would like to thank all the great response
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