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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 10, 2010
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Open Help Requests for GM
Help Request Answers
1978 Cadillac DeVille 7.0L Poor Idle Quality, Misfire VIN: 6D69S8Q224
Rough idle in drive when hot, feels like a miss. Carb has been rebuilt, new cap, rotor, wires & plugs. Runs great when cold, no hesisation, great pick up. Just rough idle when engine is at operating temps. If driven on highway and exit, car will idle fine for ...
1986 Chevrolet C10 Silverado 5.7L Pump discharge screen VIN: 1GCEC14F1G
HI there and thanks in advance for the advice on this one. I rebuilt this 700R4 tranny 4000 miles ago and the torque convertor came apart sending metal through it. I disassembled and cleaned it out and reassembled. In my haste to get it done, I am have this na...
1997 Chevrolet Blazer 4.3L Poor Idle Quality, Stall VIN: 1GNDT13WV2
Hello Techs, this engine will almost stall intermittently when put into drive or reverse or when coming to a stop at times,has somewhat of a rough idle also,have checked and smoked checked for Vac. leaks,checked cranks sensor pattern,checked egr for carbon, ch...
2003 Chevrolet Silverado 2500 HD LT 6.0L Misfire, MIL Lamp on VIN: 1GCHK29U03
Hello to all, and would really appreciate any help on this. Just joined 3 days ago and didn't think that I would have to use this forum this soon, as we usually don't run into problems we can't solve. This is a loyal and return customer for years. Truck was br... Trouble codes: P0300 (Misfire Detected)
2007 Chevrolet Colorado LS 3.7L Radio VIN: 1GCCS13E57
Hello techs, we have a customer that has a problem with noise in the am radio only. Vehicle is all stock including radio. The static only occurs when driving the vehicle at slow speed and applying the brakes, once vehicle comes to a complete stop, you can keep...
1995 GMC K2500 Sierra SLE 6.5L Blower Operation VIN: 1GTGK29F9S
Customer stated that heater would work in high only when the blower switch is in high position & when you first start vehicle. If you move the switch after start then you loose everything. I did some preliminary cks and all the fuses were good. I assumed resis...
1996 GMC K1500 Sierra SL 5.7L No Start VIN: 1GTEK14R8T
Help!!! Truck came in with a starter cutting out. R&R the starter and than truck would not start. cranks fine but will not run. checked the fuel press. and had nothing. checked for power and ground the power was only 10.2volts. good ground. So I R&R the pump. ...
2002 GMC Envoy SLE 4.2L Unknown VIN: 1GKDT13S02
Vehicle complaint is battery dies overnight. Checked draw have a varying draw from .40 to 2.9amps let vehicle sit for an hour before continuig with fuse removal. Draw was gone after removing Fuse 10 PCM B fuse which feeds fuel pump relay and circuit 440 to PCM...
2004 Hummer H2 6.0L ride height (rear) VIN: 5GRGN23U94
Hey guys! truck came in w/ inop ride height(rear). C0711 Level control press sensor circ fault. Found this code sets when ride height does not increase in certain period of time.(sets code and disables system) Replaced air bags per leaking-worked for abt it a ...
1997 Pontiac Firebird Trans Am 5.7L No Start VIN: 2G2FV22P1V
blows pcm and ignition fuse. new pcm distrubtor test out ok
1999 Pontiac Grand Prix GT 3.8L maf VIN: 1G2WJ52M1X
we are having major isues with the maf.. it will not go over 2 grams of air. we replaced it with a few, some new and a few old. this always causes the mil to light up. at start up it builds up to 2 grams but then stays at that... we have checked for vacuum lea...
2001 Pontiac Grand Am GT 3.4L Hesitation
Car came in with rough running and no DTC's. I looked on the misfire data and came up with misfires present on cylinder #2. switched plugs with cylinder #4 and appeared there. replaced plugs car seems to idle. Now when car is under a load around 2,500 rpm it h...
2001 Pontiac Grand Am SE 3.4L No Start, Security light on VIN: 1G2NF52E11
GOOD AFTERNOON TO ALL. SO HERE I AM AGAIN IN NEED OF HELP ON WHAT WILL PROBABLY TURN INTO A COMMON FIX.I HAVE THIS 01 grand am towed in 2 weeks ago no start security light flashing.I relarned the pats system all set.I did notice the key appeared originaland wa... Trouble codes: B2958 (Undocumented code), B2960 (Security system sensor data incorrect but valid), U1000 (Loss of class 2 seriel data), U1088 (Loss of sir sdm communication), U1128 (Loss of irc communication)
2005 Pontiac Vibe 1.8L Engine VIN: 5Y2SL63815
The vehicle makes a noise very similar to a power steering whine. It sounds like its coming from the area around the front of the engine. The noise is still present with the belt removed. I havent disassembled anything yet because I dont even have any idea whe...
2002 Saturn Vue 3.0L MIL Lamp on VIN: 5GZCZ63B12
hey guys I have this thing for 3 weeks.it idles ok but it will not reb. the most I get is 1600 rpm s.I try a used trouttle valve and still the same.I try a used ECM with no good results.I check the wires from the trouttle valve to the ECM/PCM they are ok. no s... Trouble codes: P0638 (Trouttle Valve circuit problem.), P2100 (Trouttle vave circuit problem)

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac Seville SLS 4.6L theft lock VIN: 1G6KS5Y4VU
Thank you for your replies. I fixed the car. The anti-theft had to be relearn the pass key code. The proper procedure for this car is to turn the key to the "run" position (Do not crank) for 10 minutes. Then remove the key from the cylinder for 10 seconds. R...
1985 Chevrolet El Camino 5.0L Carb VIN: 3GCCW80H2F
I would like to thank everyone for their help except for the tree huggers that explained the law to me. All the information was helpful. I do agree returning the car to stock is the way to go but I was simply asking if there was an alternative to installing a ...
2006 Chevrolet Impala LS 3.9L Cooling Systems VIN: 2G1WC58106
well concensus says head gasket issue. customer declined any teardown for repair. thanks
2008 Chevrolet Avalanche LT 5.3L ABS light on VIN: 3GNEC1208G
I'm gonna call this one fixed.Sorry for the delay in closing, but since this was such an intermittent problem I wanted the customer to drive it for a couple of weeks. No more warning lights as of yesterday. I have to admit that I "shotgunned'' this repair, but...
2007 GMC Yukon XL 1500 SLT 5.3L Rear Tail Lamps VIN: 1GKFK13047
1995 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C5S
Thanks so much for your help and yes this one is fixed! Two problems 1. the first used pcm did indeed have issues but still had a problem with temp sensor going nuts after a few minutes of driving, even with a new pcm. We ran a new wire with a new plug end to ... Trouble codes: 15 (Coolant temp signal high or open), 14 (Coolant temp signal low or shorted), 73 (Intermittent coolant temp).
1997 Saturn SL 1.9L radio VIN: 1G82K5277V
had to take to dealer they called gm for code must be dealer to get code
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