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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 19, 2006
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Open Help Requests for GM
Help Request Answers
1989 Buick Reatta 3.8L evaporator VIN: 1G4EC11C7K
Greetings everyone, Has anyone ever replaced the evaporator on one of these Reatta's? I have alldata and mitchell and the manufacturers repair manual but I am still having trouble trying to remove this leaking evaporator. It looks like I will have to remove t...
1995 Cadillac Seville STS 4.6L MIL Lamp on VIN: 1G6KY5299S
Hi guys well the caddy came in for the racheting noise from the isc when turning off ign.so we installed a new isc and found it has the same problem.we found the service bulletin for cleaning the throttle plate & adjusting the isc and to do the relearn procedu... Trouble codes: P0080
1998 Cadillac Catera 3.0L air bag VIN: W06VR52R2W
thankyou for any help replaced battery in vehicle now air bag light is on tried disconnecting battery,light still on scan tool will not communicate with air bag system.any help would be appreciated.
2000 Cadillac DeVille 4.6L battery no charge VIN: 1G6KD54Y5Y
i am needing help on my personal car ? went to start for work battery no charge light came on digital dash. pulled up code po 161 and 11.3 voltage on dash ? i figure cars got 120k miles alt prob bad ? got out of driveway and bam alt light off charging 14.6 . d...
1985 Chevrolet Corvette 5.7L Poor Idle Quality, Cuts out, Stall VIN: 2458796351
Hi there have done the basics new air filter/fuel filter/spark plugs.Have dug in deeper with removeing intake manifold and runners and replaced all gaskets and had injectors serviced cleaned throttle body and reset tps and ignition timing still stalls at norma...
1994 Chevrolet G20 Sportvan 5.7L Hesitation, Surge, Stall VIN: 2GNEG25K4P
GM techs, This van has a tip in hesitation that is always there, although worst when cold, it will start to sag, and if you hold the throttle steady it will die. (now this is in the shop, on the road it will not die) you can feel a hesitation on decel at the s...
1994 Chevrolet Camaro Z28 5.7L MIL Lamp on, Wont flash codes VIN: 2G1FP32P9R
Hi guys, This one is a stumper. Customer complaint is check eng lite comes on @ approx 30 mph, during warm up. No big deal right? Attempted to scan with Solus. Screen went blue. Disconnected solus, jumpered A B and light goes out, fan runs, air pump runs, but...
1998 Chevrolet Blazer 4.3L starter VIN: 1GNDT13W6W
Hello all, this thing is daffy, after it sits for some time, put the key in and no crank. All lights operate in cluster, move shift lever to neutral has no effect. If you press the drivers door lock switch to lock the doors, the door lock will lock, then unloc...
1999 Chevrolet Malibu 3.1L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1G1ND52J9X
The car came in on Friday with an Ho2s code. Replaced the o2 sensor, cleared the MIL and that car acted better. It came back yesterday with codes po131 & po1133 and the car was running like crap. I have power in the 4 prong connector in a dark brown wire. The ... Trouble codes: P0131, P1133
2000 Chevrolet Silverado 1500 4.8L No Start, Hesitation, Surge VIN: 2GCEC19V5Y
Hi fellow techs and thanks in advance for your help. This truck will intermittantly hestitates or surges while cruising and going up hills. Sometimes it wont start after a hot soak. Cold it runs great and starts right up. Fuel pressure was checked and rechecke...
2000 Chevrolet Venture 3.4L starter VIN: 1GNDU03E1Y
starter stayes ingaged when key is released starter ingages as soon as key is put in run position
2000 Chevrolet Malibu 3.1L door ajar VIN: 1G1ND52J01
Only on rainy days does the chimes and underdash lights come on,both will go out after awhile driving.The door ajar light is always on.The chimes will come on when engine is shut off and won't shut off until I pull key out.Customer said that these other lights...
2005 Chevrolet Cobalt LS 2.2L key,lock cylinder,shifter VIN: 1G1AL52F95
hi techs,this is a rental car.was towed in with key stuck in on position,battery drain.shifter button/detent? does'nt push in.you can push the white interloc button to get key off/out.i found a tsb which says to replace shifter assembly & lock cylinder.we orde...
1997 Geo Metro 1.3L No Start VIN: 2CMR5299V6
This is a no start condition with no spark or injector pulse. The no start diagnostics flow chart in Alldata leads to the replacment of the PCM but I'm not ready to believe it. There is a RPM signal to the computer (with a scanner) and I've also checked the CM...
1992 GMC topkick 6500 366CID fuel deliver tank VIN: 1GBL7H1P4N
ok..i got a good one.. i have a 92 gmc topkick and im not getting any fuel from passanger tank to driver side tank i have good grounds i have changed both sending units and had another topkick in the shop and changed both the relays and modules.. fuses good i ...
2003 GMC Envoy SLT 4.2L brake VIN: 1GKDT13S73
hello my tech friends how are you? i just had a 03 envoy come back to the shop today. the brakes stick slighty , when you let up of the gas pedel you really slow down , i put the envoy up on the rack and put it in 4wd and at a idle the envoy frt tires would ju...
1998 Hummer H1 6.5L MIL Lamp on VIN: 137ZA9035W
vehicle runs and drives normally exhibits no driveability issues mil light has been extinguished 3 times and of course vehicle returns with light on, which i am reading on a generic code reader... reads short in fuel pump secondary circuit. need some hummer di...
1986 Oldsmobile Cutlass Ciera LS 2.5L Charging VIN: 1GA3AJ35R5
Thanks in advance. This car has been to multiple shops before it made it to me. This has been used as a r/v tow behind vehicle. Here is the problem after vehicle get warm the charging voltage keeps on going down on the gauge to 8 volts. To the point where the ...
2002 Oldsmobile Bravada 4.2L Electronic VIN: 1GHDT13S72
Hi all; This car came to me last week with a/c inop compressor not coming on, found that computer was not grounding clutch relay. After some digging,I found that I had code u1000 stored in all modules. Once the codes were cleared out of all modules the compres...
1997 Pontiac Sunfire SE 2.2L No Start VIN: 1G2JB524XV
hey guys, my first week at a gm dealer and you think i could fix this 97 sunbird well, wrong. This vehicle will be hard to start like to much ignition advance(it will buck the starter) sometimes it cranks right up and runs and drives fine but let it sit 2 mins... Trouble codes: P0335
2000 Pontiac Grand Prix GT 3.8L blower motor VIN: 1G2WP12K9Y
Vehicle brought in with blower motor not working. The motor, resistor and ignition switch have all been replaced. I tried using known good test parts to make sure everything that was replaced was indeed good. Still no luck. Tried adding extra ground to blower ...
2001 Pontiac Montana 3.4L dic VIN: 1GMDX13E11
hello guys, thanks in advance for your help, i have this 2001 montana van this van came in for fans inop and batt. light, park light on cluster staying on with key off, repaired fans short at relay. tried new ignition switch with no change on the lights stayin...
2005 Pontiac Pursuit 2.2L Stall VIN: 1G2AJ52F55
Condition: vehicle displays a powersteering failure message on the instrument cluster and will stall: very intermittant. although this vehicle is still under warranty it seems as though the powers that be would like me to fix this vehicle. One problem: there s...
2000 Saturn SL1 1.9L No Start VIN: 1G8K2K5277
Has internmettant stall/no start (once every 2 days) starts up in about 2 hrs, finally broke down in shop, has no injector pulse, crank pulse,fuel, spark at the same time it stall we have no communtication to PCM (power and grounds ok to pcm). When it was runi...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac Seville STS 4.6L missfire at idle VIN: 1G6KY5291V
Well- thanks to all that replied. Most were very helpful. We smoked the intake and found nothing major, so knew we had to pull the valve covers again. Upon closer examination we found that the timing chains were a tooth off on BOTH heads. I'm not sure why it o...
1994 Chevrolet Camaro 3.4L no start
dear fellow techs thanks for all the quick responces, problem is that everything that was advised i did a hundred times over, then i gave in and called identifix for help i dont know about you but the last time i called one of these places was 10 yrs ago and b...
1999 Chevrolet C1500 Suburban 5.7L No Start, Stall VIN: 3GNEC16R8X
This vehicle was sent to the GM dealer where the pcm was reflashed. Vehicle cranks and runs fine. No complaints from the customer. Thanks to all who replied. Trouble codes: 1626 (Loss of serial communication with VTD), 1631 (Invalid password).
2001 Chevrolet Venture LS 3.4L cooling fans VIN: 1GNDU03E71
the answers i recieved made me believe i shouldn't put much stock in the scantools inability to turn fan on.i tested fans with ac on and off,the high speed would come on with ac when temp.was 226,would pull temp down to 196 and stay there,the temp would go no ...
2002 Chevrolet Express 1500 5.7L rear air VIN: 1GBFG15R22
thanks to all techs that replied. i removed rear expansion valve and cleaned it out and recharged system and still had same problem, after a good night sleep i woke up after dreaming (nightmeres) about the problem and ordered a new valve from carquest and repl...
2003 Chevrolet C4500 Kodiak C4C042 8.1L alternator VIN: 1GBC4E1EX3
after a complete check of system found corroded connection at starter solenoid that was not letting charge reach battery. thanks to those of you who took time to read post.
2003 Chevrolet Impala 3.4L bcm VIN: 2G1WF52E43
Thanks for all the replies, a Tech 2 is necessary to program or 'set up' the BCM on this car. Thanks again!
1999 GMC Yukon Denali 5.7L Headlights VIN: 1GKEK13R9X
Thanks to Everybody for your help. As I dug deeper into the problem I got my hands on a known good dimmer assembly and not to my surprise it did not work. i wanted more time with the vehicle but the customer was short on time and the fact that I could not comm...
1990 Oldsmobile Delta 88 Royale 3.8L speedometer VIN: 1G3HY54C31
Thanks for all the good advice;I should have tried pushing the reset button first before I headed for the keyboard. Resetting the trip was the fix.
1995 Pontiac Grand Am GT 3.1L no rear brakes VIN: 1G2NW15M4S
thanks for all the responses! everybody was right on the money about removing the plastic bottom where the abs gears are located and tighten them down with lock-tight. I did this and all is now well with the grand am. I've got rear brakes and no abs or brake l...
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