Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 10, 2006
International Automotive Technicians' Network (iATN) - Members Only
(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
1991 Buick Park Avenue 3.8L Lighting VIN: 1G4CW53L3M
Hi All i have this Park Avenue with dome lights and door lights staying on, i removed all of the relays under the right dash panel but the lights remain, when i remove fuse 15 from the fuse box under left dash the dome lights went out, when i remove fuse #3 fr...
1994 Chevrolet K1500 Cheyenne 5.7L 3-2 solenoid VIN: 1GCEK14K0R
I got the truck with the 3-4 clutch smoked. I was told this happened every 12-18,000 miles since the trans was rebuilt at a dealer. I found no good causes. I'm good with transmissions but don't understand what can cause the only glitch i can find. It shows a 3...
1994 Chevrolet S10 2.2L blowing black smoke VIN: 1GCCS1447R
Came in with complaint of a coolant leak (we had repaired 3 hoses two weeks ago and had advised there may be more)and that it would hunt for an idle when you came to a stop. We found a leak at the left rear of the head gasket, but could not duplicate the hunti... Trouble codes: 45 (Rich Exhaust)
1995 Chevrolet S10 LS 4.3L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Stall, Misfire VIN: 1GCDT19Z3S
This vehicle came in with a no start condition. Intial inspection showed that the truck seemed to be flooding itself out and would run only if throttle was WFO. The exhaust has thick smoke indicating a rich condition. No change in symptoms after changing CTS a...
1997 Chevrolet Lumina 3.1L No Start, Cuts out VIN: 2G1WL52M1V
Hello, Car was towed-in as a no start. Customer said it would idle but will die when putting into gear. When I drove it in car would idle but die when trying to accelerate. Scanned computer and had six codes,(map,maf,tps,misfire...). Cleared computer and car s... Trouble codes: P1374 (Map sensor)
1999 Chevrolet Silverado 1500 5.3L front axle, transfer casenois VIN: T8XZ111047
customers complaint is a low pitched rumble from feft front starting at 45 mph. i originally isolated it to the front axle, found bad left carrier bearing. changed all front axle bearings, reinstalled front axle, noise is still there. removed transfer case, di...
2001 Chevrolet Monte Carlo SS 3.8L 3.4 shift VIN: 2G1WX15K71
this trans works fine 1st to second 2nd to 3rd but will not shift to 4th.scan data shows solenoid is activated. lock up in 3rd shows only 50 to 60% and when shows shift to 4th it has 20% . once in 1o times when 4th gear actvated you feel a slight drop i rpm's ...
2001 Chevrolet Impala LS 3.8L cooling fans VIN: 2G1WH55K11
cooling fans and a/c clutch are always, on scanner shows a/c request all the time(a/c controller in off position). have replaced cooling fan relays.
2004 Chevrolet Aveo 1.6L Misfire VIN: KL1TD62604
Vehicle developes an intermintent miss usually after returning to idle. Customer had spark plugs replaced before bring the car to us. The car will run fine at higher rpm's and develope a miss upon returning to idle. After returning to idle the car will smooth ... Trouble codes: P0300 (Random missfire), P0700 (transmission fault), P1781 (Corrupt engine rpm info to transmission)
1999 GMC K3500 Sierra SL 5.7L Poor Fuel Economy VIN: 1GDJK34R4X
customer has a gmc k3500 cab and chasis with a dump bed and dual fuel tanks. customer states sometimes rear tank doesnt seem to empty all the way. my questions are as follows. a) how do i test the modules ability to activate the balance pump? i tried to jumper...
1994 Pontiac Sunbird LE 2.0L Rear drum brakes VIN: 3G2JB11H7R
This veh rear brakes seem to be doing all the work, more so the left rear. When you touch the brake pedal the car's suspenion will dive down in the back and the brake will bang on and off for a lack of a better term. We have replaced shoes of different comp an...
1996 Pontiac Grand Am GT 3.1L Stall VIN: 1G2NW12M4T
This car came in several months ago, symptoms were start and die. Found bad passlock sensor replaced and performed relearn proceedure. Customer took car, ran great for about two weeks then started same problem again. It has same 1629 code again pass lock senso... Trouble codes: 1629 (passlock cylinder)
1997 Pontiac Sunfire GT 2.4L engine noise VIN: 1G2JD12T5V
Vehicle came in with knocking noise, after some time checking we determined that most of the noise came from the timing cover. we removed the cover and found that the chain was hitting part of the aluminum cover and had worn away about 1/8 of an inch of materi...
1997 Pontiac Grand Am SE 3.1L Cuts out, Stall VIN: 1G2NE52M4V
This car shuts off or stalls bang dead . It restarts immediately and drives OK No check eng lamp,no stored codes to help either.We tested fuel pressure 38 psi the spec is 42-47 psi.the car runs very good strong .It feels like the computer or ignition module bl...
1997 Pontiac Grand Am GT 3.1L power windows VIN: 1G2NW52M4V
I hope someone's seen this before to make it an easy fix! When operating any window from the master switch or any switch, and powering any window to the down postion, no problem! When going up, every window goes slow and eventually stops. I,m guessing there's ...

Fixes & Summaries for GM
Fix/Summary Answers
1989 Buick Electra Park Avenue Ultra 3.8L clutches VIN: 1G4CU54C6K
The fix is another transmission..after waiting days and days on a cylindrical bearing for the input sun gear, I put it back together and put it in the car...but I did not get it fixed. What it is doing, is staying in 3rd gear, and going into 4th also..binding ...
2000 Buick Century Custom 3.1L Cooling System VIN: 2G4WS52J9Y
THANKS to all who sent me information to help fix this vehicle. The response was unbelieveable and very helpful. Whereas the customer has elected not to continue with our desire to fix his vehicle, we only did a coolant flush to date, I can share with you the ...
2002 Buick Rendezvous CX 3.4L information center VIN: 3G5DB03E32
thanks to steve from north dakota, hold mode button on panel for three seconds and it toggles back and forth between english and french. you would think the owners manuel would infor you about this and you think the customer would have complained before we did...
2001 Cadillac DeVille 4.6L starting VIN: IG6KF57941
vehicle acting eratic. found all lights and guages goind on and off at will. checked all ground and positives. overlooked ground strap below the alternator. appeared to be in good condition. at closer examination found the end on the wire was broke and conduct...
1993 Chevrolet Cavalier RS 2.2L Cuts out VIN: 1G1JC1445P
I tried another module. I replaced it with a GM module and it took care of the problem. Thanks all
1997 Chevrolet K1500 Suburban 5.7L Cuts out, fire leaves VIN: 3GNFK16R0V
Hello and Thanks to all who replyed. After trying all replys I still had same problem. With nothing else to do I decided to try another set of plugs and hooked up my scan tool and watched the cylinder misfire data. Well you guess it cylinder #2 was would show ...
1999 Chevrolet Step Van 5.7L No Start, No Crank VIN: 1GBHP32R2X
Sorry about the wait but this one is fixed. Turned out to be a melted ignition switch connector that also melted part of the ignition switch. The melted connector is no longer available so I made my own connector. It also had a broken ignition rod link in the ...
2000 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GCDL19W3Y
HUGE Thanx to all who responded so quickly!!! I was able to find the gasket at CarQuest with the Standard Ign #VG57. The guys like, 'Yeah, I've got one on the shelf. Hey! it does have a screen in it.' Trouble codes: 404 (EGR open position performance).
2002 Chevrolet Silverado 2500 HD 8.1L MIL Lamp on VIN: 1GCHHK29G2
We scoped the cam sensor and you could see a small glitch at times. We replaced cam sensor and corrected the problem. Trouble codes: P0342 (Camshaft position sensor circuit low voltage).
2002 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13ZX2
I would like to thank Patrick and tony for there help. actually thanks to everyone who replied. we checked intake with carb spray and actually set a misfire code. thanks again guys, customer is very happy along with all of my techs.
1999 GMC Yukon Denali SLE 5.7L No Start VIN: 1GKEK13R7X
Well most of you were right. Even though I didn't see any obvious problem with the cap and rotor I replaced it anyway, with dealer cap and rotor. started up. running good. thanks
1991 Pontiac Bonneville LE 3.8L Excessive Emissions, Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1G2HX54C7M
wow you guys are great! Almost everyone said crank sensor.I hooked up the ole lab scope and there it was! This is what I found.Upon inspection of the sensor and wiring I noticed anti-freeze in the plug...What? I looked a little deeper and found the intake was ...
1998 Pontiac Grand Am GT 3.1L Races VIN: 1G2NW12M2W
As I stated the job got passed on to another tech who has (atleast so far) taken care of the case of the car with a mind of its own. Having ruled out cruise control and floormat possibilies we realized as most of you said that extra air was getting passed the ...
1998 Pontiac Sunfire SE 2.2L Hesitation, Surge, Misfire, MIL Lamp on VIN: 3G2JB524XW
pcm seals fail and also gets packed with leaves and other crap. that was exactly the problem that we had we opened the PCM and found water damage that was giving the codes 0404 and 1404 being stuck open and stuck closed at the same time is strange ??.Changed p... Trouble codes: P0122, P0404 (EGR Solenoid performance problem), P1404 (undocumented code).
1999 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NE52E9X
Thank you for the replys. The response confirming our finding that the theft sysem was not the cause helped us to jump in take a deeper look. Several responses had suggested push rods were not installed properly due to intake and exhaust are different lengths ...
1999 Pontiac Grand Prix SE 3.1L Cold engagement VIN: 1G2WJ52M6X
Well, this certainly was an eye opener! Seems everyone knew about the problems GM had with the input clutch lip seals except me. All but one of the replies remarked on this fact. The seals shrink just like they used to on the 440 T-4 and won't allow engagement...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next