Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 14, 2007
International Automotive Technicians' Network (iATN) - Members Only
Next
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CX 3.4L service vehicle soon VIN: 3G5DA03E22
THE SERVICE VEHICLE SOON INDICATOR COMES ON AND THE ALRM DINGS ONCE EVERY 45 SECONDS OR SO,NO CODES IN ANY MODULES,I CAN'T FIND A LOT OF INFORMATION ON THIS INDICATOR OTHER THAN THE PCM OR BCM CAN TURN IT ON VIA CLASS 2 COMMUNICATION TO IPC,I CAN'T TELL FROM D...
View
1993 Cadillac DeVille 4.9L interior lights VIN: 1G6DW5277P
I have a problem with the interior light will stay on about 10 minutes then go off. I check with the tech 2 no door switches are on. Can you guide me in a direction? Thank You,
View
1995 Cadillac Fleetwood 5.7L traction VIN: 1G6DW52PXS
Vehicle came in with ABS/Traction control lights illuminated. Scanned ABS computer and read codes 25 & 27. Unplugged LF wheel speed sensor and found sensor circuit open. I replaced LF speed sensor. Test drove vehicle and all sensors are showing correct speeds....
View
2002 Cadillac DeVille DTS 4.6L ignition lock VIN: 1G6KF57992
Hi all. The car is a 02 cadillac deville DTS 4.6L the car will not start and the key will not come out of the ignition, like it isnt in park. scanner will not communicate with the vehicle, no power to the starter. the diagnostic flow chart says to check for p...
View
1993 Chevrolet Cavalier RS 3.1L right rear
ok guy's and girl's this is my wifes car. we put new every thing in the rear of this car new shoes new drums new lines new hose new weel cylenders and right rear is still locking up. PLEASE HELP ME SHE IS ABOUT TO HURT ME! (If i dont fix it) Thanks to all tha...
View
1995 Chevrolet K2500 Suburban 6.5L Stall, MIL Lamp on VIN: 1GNGK26F5S
Need help with a GM diesel, I've got a 05 6.5 turbo when it cam in it had been sitting for about 18-20 months so there were some issue right up front. We have put batteries and a starter in, transfer pump(frame mounted)fuel filter and injection pump. Now comes... Trouble codes: 34 (idle stepper motor)
View
1995 Chevrolet C2500 Cheyenne 6.5L Stall VIN: 2GTFC29S8S
truck stalls intermittently. anoter shop said it needs another injection pump. check engine light came on last week. thats when stalling started. plugged in snap-on scanner, after entering vin on scanner, scanner says communication mismatch. then say proceed p...
View
1996 Chevrolet C3500 Cheyenne 7.4L Hesitation, Stall VIN: 1GBKC34J6T
Thanks for the help in advance .I am posting this for a coworker and this one has everybody in the shop stumped.this truck runs great except under light accel it hesitates and sumtimes kills the engine.He has replaced the ecm,tps ,distibutor,cap,rotor ,wires ,...
View
1996 Chevrolet K2500 Cheyenne 5.7L abs VIN: 1GCGK24R9T
ABS is applying with truck on normal stops below 10 MPH. Setting all three wheel speed sensor codes and all check good. Disconecting or connected all three sensors, scanner shows three MPH with truck sitting still. Speedo and brake lights work normal. Cleaned ...
View
1996 Chevrolet Tahoe 5.7L gauges VIN: 1GKEK13R3T
after we put every thing back together, when you turn the left signal on,, the bright lite and all the gauges blink and pulse with signal. the custermer told us that the interiour lights stuck on and would not shut off, i pulled the switch panel and found burn...
View
1997 Chevrolet Cavalier 2.2L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1JC5244V
car was brought in as crank but no-start pulled plugs found them fouled with fuel and worn replaced plugs got vehicle to start but ran very bad and no power watched data on mentor found timing adv all over the place pulled front cover found tensioner in pieces... Trouble codes: P0300, P0171
View
1999 Chevrolet Tahoe LS 5.7L No Start, Misfire VIN: 1GNEK13R2X
Hello all. This one has got me. Vehicle came in thinking it needed a transmission. Test drove, was fine, a block away it started to chug-miss-backfire, got it back to the shop and starter would not catch the flywheel. Replaced the starter, cranks over but keep...
View
2001 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT19W9I
Originally a simple vent diagnostic. Replace with gm vent. Vehicle back the next week only the p0446. p0449 had always been a history code - never seen it current. But now we have pressure in the system when gas tank cap removed, and vehicle is hard to fill wi... Trouble codes: P0446 (The PCM sets this Diagnostic Trouble Code DTC if the evaporative system vacuum decay rate is more than a predetermined value.), P0449 (If the PCM detects an incorrect voltage for the commanded state of the fuel tank vent driver Diagnostic Trouble Code DTC P0449 sets. History only never current.)
View
2001 Chevrolet Silverado 1500 5.3L ABS Control Module VIN: 1GCEK19T41
This is the 2nd ABS brake control module we have attempted to put in this vehicle. The first time we tried to replace the module, the replacement module we got resulted in all the MILs illuminating on the dash - put back the original module so customer could u...
View
2003 Chevrolet Silverado 2500 HD 6.6L ABS module VIN: 1GTHK29143
Snapshot shows two to three mile per hour change when code sets, code C0055 - have checked plugs and wiring, cannot duplicate problem in shop - may drive two or three days and light might not come on - have checked powers and grounds, no problem found - no cod...
View
2004 Chevrolet Impala SS 3.8L dash reset VIN: 2G1WP55124
We put a key switch in this car a month ago due to a no start. after the learn procedure the car started and runs fine, after driving for 5 min or so the instrument cluster (speedo, tach and guages, goes dead and instantly returns with the chine going off , ju...
View
2004 Chevrolet Impala 3.4L Headlights VIN: 2G1WF52EX4
Customer Came in and her complaint was that while driving down the road her headlights would go out. She said it doesnt happen very much but obviously a problem in the dark with no lights. I myself was unable to duplicate her concern. Hooked up the scanner and...
View
2000 GMC Savana 1500 5.7L fuel gauge VIN: IGDFG15R6Y
this van's fuel gauge reads correctly with key on, engine off. when started the fuel gauge will drop to 3/4 when tank is full, cycle key without restarting and it reads full, start engine and it reads 3/4. there are a purple wire and a blk/wt wire leading from...
View
2005 GMC Sierra 2500 HD 6.0L No Start VIN: 1GTHK29U65
Hey guys, We got this vehicle towed in from another shop. customer wanted a second opinion.The previous shop said that they had no communication from scan tool. We confirmed but replace a blown fuse and got a data stream reading. It has a code po336 set (Crank... Trouble codes: P0336
View
1999 Oldsmobile Intrigue GL 3.8L Misfire VIN: 1G3WS52K3X
Came in with a service engine lamp on. Vehicle shows a misfire on cylinder 2. Compression and fuel pressure check out okay. We have moved the coils around without any change, still misfires cyl 2. We have moved injectors as well as replaced with new and still ... Trouble codes: P1300
View
2004 Oldsmobile Bravada 4.2L lack of acc light VIN: 1GHDT13S04
OK i have an intermittant here that is driving us nuts. This bravada came to us a few months back with a rat attack under the hood first off we found some turn signal wiring chewed up and fixed that. Weeks later the vehicle came back with a lack of power light... Trouble codes: P2138 (1-2 corolation)
View
2005 Pontiac G6 GT 3.5L Hesitation, Stall, MIL Lamp on VIN: 1G2ZH528X5
checked all grounds underhoods & wiring found no problems Trouble codes: P1125 (p2120- throttle pedal position sen sw d ckt), P2120 (throttle pedal position sen sw d ckt), P2125 (sw e ckt), P2138 (sw d/e correlation)
View

Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Misfire VIN: 1GNDT13W8S
FIRST OFF A HUGE THANK YOU TO EVERYONE THAT SPENT THE TIM [...] TO HELP. THE RUNNING PROBLEM WAS FAIRLY STRAIGHT FORWARD. THE USUAL BAD SPIDER UNIT AND A COUPLE OF O2"S, THE COMMUNICATION ISSUE HOWEVER STILL EXISTS. COULD NOT FOOL THE SCAN TOOL BY USING ANY OTHER Y...
16
1996 Chevrolet Corvette 5.7L No Start, MIL Lamp on VIN: 1G1YY32P8T
Hay guys thanks for all the help. I took the dist back out it had oil on inside of it so I went on down to the front cover replaced all the seals.Installed a new dist assembly the car fired right up.No more cranking for long time,tach was working properly, kep... Trouble codes: P0372.
6
2000 Oldsmobile Intrigue GX 3.5L Starting VIN: 1G3WH52H8Y
many thanx to all who responded, most nailed it on the head. i replaced the ignition switch and all codes went away and it started just fine. thanx again, iatn is the best!!!
3
1992 Pontiac Grand Am SE 3.3L block heater VIN: 1G2NE51N9N
hello everyone, ok, so the final block heater i put in was a gm block heater to make sure it wasn't just the brand. remember that this customer has told me that other people plug into the same block as he does and that he has tried different plug in's at his h...
15
1999 Pontiac Grand Prix GT 3.8L No Start, Stall VIN: 1G2WP52K7X
Thank you all for your suggestions. I did find a rubbed through cam sensor wire white/blk. It did not fix the problem but it would have been back with some kind of problem. Problem was the crank sensor.After wire repair vehicle still acting up, with new crank ... Trouble codes: P0336, C0236 (EBCM no rpm input signal 1).
8
1999 Pontiac Grand Prix SE 3.8L shifter VIN: 1GW2R5219X
sorry about the dealy, i have not heard anything from the customer...since i looked at the shifter..he says no problems so far..intermittent issue..thanks for the input..probably needs a shifter assembly with the lock release switch thanks..mark
13
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next