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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 20, 2010
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Open Help Requests for GM
Help Request Answers
1998 Cadillac Eldorado ESC 4.6L idle high VIN: 1G6ET1294W
got a 1998 cadi that idles at 925 and the iac count is at 0. used smoke to check for intake vaccum leaks and nothing also used propane and carb cleaner just in case. p/s pressure switch is ok all sensers ok egr ok code is p0507. even tried adjusting throttle s... Trouble codes: P0507
2002 Chevrolet Malibu 3.1L No Start VIN: 1G1ND52J22
This vehicle will have a no-start condition usually after 30 min. drives but it will do it any time it chooses. There is a GM TSB for this symptom (and codes) that has a repair or checking the ground at the transmission to engine case bolt. I installed shake... Trouble codes: U1040, U1000
2007 Chevrolet Express 2500 4.8L Cuts out VIN: 1GCGG25V87
Hello I have a g van that sometimes while driving it will go from driving down the road and then only idle. They say if they give it gas it wont do anything. It has happened 2 times to customer 1 time they restarted, the other they turned around and it started...
2001 GMC Sonoma SL 4.3L Hesitation, Stall, MIL Lamp on VIN: 1GTD19WX1K
This issue only happens about once a week or less and is always at highway speeds. The vehicle will begin to loose power, slow and possibly stall. Once on the side of the road and waiting a few minutes he can drive on with no problems. This has been happening ... Trouble codes: P1010, P0300
2004 GMC Sierra 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GTEK14T74
I replaced the intake manifold gaskets and the fuel pump. The pump was in spec on pressure but customer chose to replace it as a preventative repair. The intake gaskets were replaced because of suspicsion of a vac. leak and I swear I still hear it on the drive... Trouble codes: P0300 (Misfire)
2006 GMC C5500 Topkick C5E044 6.6L limp mode VIN: 1GDE5E1276
hello iatn members i have a 06 duramax with an allison trans that will go fo 5 to 10 miles normal before it goes into a limp mode and sets a u0100 code. i dont do many diesels but this tow truck brings me a lot of work and the dealer cant get it in for almost ...
1989 Oldsmobile Cutlass Supreme SL 3.1L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 1G3WS14T1K
Vehicle towed in no start. checked for codes found 33 map sensor high. Tested circuit for map sensor and found bad ecm. replaced ecm and then found 5 of 6 injectors bad. replaced all 6 and got vehicle started. now i am fighting both map high codes and map low ... Trouble codes: 33 (map sensor high), 34 (map sensor low)
1996 Saturn SW1 1.9L five speed standard transmission VIN: 1G82G8286T
Hello Friends, This 1996 Saturn SW1 1.9 Lt. with a five speed standard transmission. The lady on a rainy day went through a puddle of water, right after that she couldn't shift into second gear.She drove the car to my shop, shifting from first to third gear.W...

Fixes & Summaries for GM
Fix/Summary Answers
1989 Chevrolet Camaro Iroc-Z 5.0L No Start, Cuts out VIN: 1G1FP31F0K
First I would like to thank all 65 of you who replied, of who 95% said to replace all the injectors. I bought 8 new injectors from Summit Racing and presto. Not an easy job thou. The customer was all smiles. The hardest part was the injectors would only test b... Trouble codes: 45 (Rich [...] Indicated).
1995 Chevrolet S10 2.2L trans, speedometer VIN: 1GCCS1444S
Thanks to everyone for the replies. Sorry for the slow response, but the customer has owed me some money for almost two months, so I refused to dig any deeper until he comes up with the dough. My gut tells me that the PRNDL sensor is telling the cluster and th...
2009 Chevrolet Malibu LS 2.4L MIL Lamp on VIN: 1G1ZG57B89
THANK YOU ALL, Most said it is too new, check for warranty and just clear the code.the evap system check ok.I compared the ftp reading to 1998 malibu and it almost identical so I cleared the code.It's been 2weeks and no comeback yet. thank again. Rick Trouble codes: P0451 (fuel tank pressure sensor performance).
1988 GMC K1500 Sierra 5.7L Low Fluid Pressure VIN: 2GTEK14K4K
Thanks Denny and Mickey, your advise was right on. It had a bad pump assembly. Though I was sure it was a good unit, the stator shaft was leaking. I din't reassmble this unit though, I put together another one and it's plowing snow today, dang spring snow stor...
1995 Pontiac Grand Am SE 3.1L No Start VIN: 1G2NE55M1S
Thank you all for the replies. I went through the 30 min learn process with the used ECU and the engine started and ran for about 10 min. It will start at times but never stays running. When ever it dies the injector grounds go away while the pulsed signal fro... Trouble codes: C0DE?.
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