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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 22, 2010
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2002 Buick Regal LS 3.8L No Start, Stall, Misfire VIN: 2G4WB55K72
I have been banging my head on this 1. it seems when it gets hot it shuts down an comes up with po300.ihave replaced the cat and plugs ,wires, ckp sensor still no difference an after installing the cat it seemed to be worse i heat tested the cat an it was abou... Trouble codes: P0300
1995 Chevrolet K1500 Suburban 5.7L No Start
Thanks in advance for any and all help. I'm trying to fix this truck over the phone for my brother in law. He was out 4x4ng coming down off a mountain in 1st gear and noticed his brakes fading due to heating up, parked truck and let cool down and then it would...
2002 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Surge, Poor Fuel Economy VIN: 1GNDS13S32
it drives ok but when it arrive to a stop and then accelerate again the engine sounds like poor of fuel, this is only 2 seconds. after that it runs fine and the costumer say sometimes the engine it dies, so the costumer went to the dealer to buy the tps sensor... Trouble codes: P1345
2003 Chevrolet Impala 3.4L reverse lights horn park lamps VIN: 2G1WF52E73
thanks in advance for any help, this one has been around for too long. original complaint was horn sounding randomly, when i got it the reverse lights were on solid, horn chirping, park lamps flickering and drls flashing every 10 secs or so. every ckt led me t...
2004 Chevrolet Malibu 2.2L door ajar light VIN: 2G1WF52E94
This is a buddy's car. Thanks in advance for your help. What we have is a 2004 malibu that has an intermittant door ajar light on. Has anybody seen a common issue with these? I have heard a little bit about the body control module going bad and causing this bu...
2005 Chevrolet Corvette 6.0L Starting system VIN: 24U0551136
Car will not start when you press the "Start" button on dash. All lights on dash and headlights, etc go out for approx 20 - 30 secs. then dash lights will light again and you cannot turn system off. Always on ACC or ON position. The Service Engine Soon light i...
2007 Chevrolet Silverado 1500 WT 4.3L srs VIN: 1GCEC14X37
could not run set up in sdm module do to code b0012 oe resistance below spec stage 1. could not clear code but could disconnect air bag module and could clear b0012 oe resistance low/ shorted circuit but then sets codes for resistance high / open circuit. inst...
2001 GMC Savana 2500 5.0L MIL Lamp on VIN: 1G1FG25M91
Oh boy do I need some good advise, i cannot figure this one out! Van came in with a p0300, p0171, p0174. smoked upper intake for a vacuum leak, found and , replaced plenum gasket. Resmoked intake and no leaks are present, although there is small leak where air... Trouble codes: P0171 (p0174-), P0174 (testing and results)
2002 GMC Envoy SLT 4.2L transfer case VIN: 1GKDT13S02
This SUV is a strange one. 2WD car drives great, no vibrations/shimmy at all. Switch it into Auto 4X4 or 4X4 and starting out there is a bad shimmy in the front end. It goes away at about 40 mph and it is ONLY under a load. Have had the vehicle in the air and ...
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 ...
2001 Pontiac Grand Am GT 3.4L radio stereo VIN: 1G2NW52E91
My wife's cd player died in her 2001 Chev venture and my employee with the 2001 grand am donated his head unit for use since he opted to swap it out for an aftermarket unit. The head unit is a Monsoon unit but does not have the RDS markings on it anywhere. T...
2003 Pontiac Grand Am SE 3.4L oil pressure VIN: 1G2NF52E73
start engine it blows the seal out of the oil filter, tried different filter no change. has any one seen oil causing thios. maybe the relief valve in oil pump
2006 Pontiac G6 3.5L possible trans VIN: 1G2ZG55886
i have this g6,has a very bad vibration at betreen 1000-1200 rpm.feels almost like a miss,but missfire counts are o all cyl.vibration dampner seems ok.flex plate looks ok.may have trans problem but not sure.thanks for any help,bill
2004 Saturn Vue 2.2L Cuts out VIN: 5GZCZ23D14
This vehicle was in a couple days ago for a #3 misfire. I replaced the plugs and that has been resolved. The complaint is now that the vehicle hesitates or cuts out. I hooked up my scan tool and fuel guage. When it happens it feels like the engine is at idle. ... Trouble codes: P0303 (3 Misfire)

Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet K2500 Suburban LT 7.4L No Start VIN: 3GNGK26J2T
thanks all that replyed. ended up being a no spark under compression only. pull the spark plug wire and tested for spark just fine. lots on spark at plugs. plug them into spark plug and no spark. traced to coil power wire termnial. looks like someone ramm...
1999 Chevrolet K3500 7.4L No Start, Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1GBJK34JXX
thank you all for the replies.. they did help but not solve the problem... Actually i have found the crank sensor to be too close to the crank.. cause.. the crank end play is bad.. i guess it is walking around ... the sensor had some marks on it.. so i pulled ... Trouble codes: P0339 (crnk pos snsr intermittent), P0341 (crnk pos snsr out of range).
2007 Chevrolet Express 2500 4.8L Cuts out VIN: 1GCGG25V87
Got it to finally act up for me, turns out the fuel pump was loosing its ground. The ground wire is at the rear of the left frame rail by the rear of the gas tank.
2002 Oldsmobile Alero GL 2.2L Fuel Gauge, Temp Gauge VIN: 1G3NK52F12
Hello I have received a lot of replies. Some how the part of the post that says we can not recreate the customers complaint has been misread by a few. We have ran the vehicle with the scanner hooked up but the gauge has never risen above normal for us, only fo...
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