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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 19, 2011
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Open Help Requests for GM
Help Request Answers
2006 Cadillac CTS V 6.0L MIL Lamp on VIN: 1G6DN57U46
This vehicle came in with codes P0220 , P2135, checked all codes with modis scanner, tested voltage referances all with in spec, however when driving MIL lamp comes on , the goes into reduced power mode , replace throtle body and gas pedal , all seemed well , ... Trouble codes: P0220, P2135 (App ciruit 2 fault)
1992 Chevrolet S10 2.5L Stall VIN: 1GBCS10A8N
This is a postal LLV. It has had the brake booster, IAC, alternator and the computer all replaced. Scanned to see if everything is working properly and all is good. This truck stalls when turning either right or left lock to lock. Doesnt do it all the time abo...
1999 Chevrolet K2500 LS 7.4L Poor Idle Quality, Hesitation VIN: 1GCGK24JXX
Thanks in advance! 2 fold problem. After running about 3 minutes right bank goes full rich and runs horrible (4 cyl run) unless you really get on it then has great power. Changed O2 on right bank as it was dead and carboned, new O2 now reads1.1 volts indicatin...
2002 Chevrolet Silverado 1500 5.3L fluid VIN: 2GCEK19TX2
Hello to all the great tech's of the world,as always i appreciate you time and input.Here is my question.I have approx 10 cases of chrysler atf plus 3,i cannot send it back to the dealer because i have had it so long.I would like to do a trans service\flush on...
2003 Chevrolet Silverado 1500 HD LT 6.0L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1GCGK13U13
Hello and thank you ahead of time for your help. A customer brought his vehicle to our shop because it was low on oil pressure and had a rod knock, so we installed a reman engine. About two days after receiving the vehicle he complained that early in the morni...
2001 GMC Yukon XL 1500 Denali 6.0L Hesitation, MIL Lamp on, reduced engine power VIN: 3GKGK26G61
This roach came into the shop with a cel and reduced engine power light on. codes p1220 and p1221. another one of our techs replaced the tps on the throtle body 2 times. came back in with the same 2 codes and this time i drew the short straw and got to get my ... Trouble codes: P1220, P1221
2002 GMC Sierra 1500 5.3L Hesitation VIN: 1212245462
Hi guys and gals This Truck is a real Pain. Problem: On occasion but not always the truck will fall on its Face (cold Start) trying to take off Truck also Hesitates under heavy acceleration(always) What was done thus far! Fuel Filter Changed Twice Exhaust ...
2004 GMC Sierra 2500 HD SLE 6.6L Left Front Brake VIN: 1GTHK29284
This truck was just towed back for the same reason it came in for a few days ago. The left front wheel is siezed up. When it first came in, the wheel was sticking and totaly freed up when I removed the caliper. Is there another reason this brake will stay on o...
2003 Saturn Vue 3.0L Cuts out, Stall VIN: 5GZCZ53B23
Ok this one is racking my brain so ty in advance for any help you guys or ladies can share, I have a 2003 saturn vue that dies while driving , mostly hot but not every time . When the car came to me it had dash lights flickering and no power steering we pinned... Trouble codes: P1629 (Theft fuel enable -incorrect/no signal)

Fixes & Summaries for GM
Fix/Summary Answers
1988 Chevrolet Corvette 5.7L Excessive Emissions VIN: 1G1YY218XJ
I have not fixed this vehicle. The nox readings before cat at air rails is nearly the same. Co and hc are being taken care of by the cats. Right side idle co.20 hc 180 2500 rpm co .26 hc 63 o2 2.3 nox 580. Left side idle co 053 hc 192 2500 rpm hc 69 co .60 nox...
2004 Chevrolet Suburban 1500 Z71 5.3L Service 4 Wheel Drive message VIN: 3GNFK16Z84
So far, the customer has not made it back for the follow up. When they do make it back, I plan on looking into the transfer case encoder motor sensor. Thanks for the information, as we do not see many issues with 4 wheel drive down here. If the vehicle comes...
2003 GMC Sonoma SL 2.2L pushing fluid thru dipstick tube VIN: 1GTCS19H43
Finally dropped pan. Found filter laying in bottom of the pan. I didn't think this was the root problem with this trans but put a new filter in and gave it a try. i didn't really run it [...], just wanted to see if I would have movement. I did'nt so I have put ...
1989 Oldsmobile Cutlass Supreme SL 3.1L Hesitation, Cuts out VIN: 1G3WS14T4K
Many thanks to all who replied to my help request, the customer has not returned for further diagnostics or repair. I was leaning heavily toward the fuel injectors, as short circuited windings will draw excessive current without delivering enough fuel/also put...
2003 Pontiac Grand Prix GT 3.8L engine VIN: 1G2WP52K43
Good news, the plate on the rear of the engines gasket had failed replaced it and cured the leak Larry
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