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Professional Automotive Repair Technical Discussions for March 25, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1991 Buick Century Limited 3.3L No Start VIN: 3G4AL54N3M vehicle will not start-no codes found-checked ecm and injector coil fuses-both good-using the otc tools and technique manual-no start-engine cranks okay-port fuel ignition with c3i-this vehicle does not have a tach book says a shorted tach will prevent startin... |
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| 1995 Buick Roadmaster 5.7L oil light VIN: 1G4B752POS Thanks in advance I have a problem with the oil light on the dash its on for a while then its off for a while is there a sensor i cant find someware i also find it hard on gaz lately and the check engine light goes on and off also my snap on scaner is down for... |
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| 2001 Buick LeSabre Custom 3.8L suspension VIN: 1G4HP54K21 Hey Everyone, Here's My Problem. When Coming To A Complete Stop In This Buick LeSabre I'm Feeling A Lurch Backwards. It's Not Rolling Back Just Sort Of Bouncing Back And Rocking. In Reverse Braking It Lurches Forward. We Replaced Worn Tie Rod Ends, But That Wa... |
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| 1995 Cadillac DeVille 4.9L oil pan gasket VIN: 1G6KDS2B9S This car originally came in a few months ago for an oil leak, which we found to be the oil pan gasket. We replaced with the improved Felpro gasket, which was cork, per TSB. The car has returned with the oil pan gasket leaking again. Upon disassembly I found ev... |
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| 1997 Cadillac Seville SLS 4.6L Misfire, MIL Lamp on VIN: 1G6KS52Y8V Car had misfire on cyl. #3,found spark plug to be oil fouled. Anyone one ever come acroos this? Possible valve seals? Any help appreciated Trouble codes: 300 (random misfire) |
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| 2002 Cadillac Seville STS 4.6L rh low beam VIN: 1G6KY549X2 Help needed from cadillac techs. This is my personal vehicle just purchased. The rf low beam seems to work when it feels like it. Sometimes it does and sometimes it does not. The bulb is good because when it wants to, it works. Have swapped relays from high an... |
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| 1984 Chevrolet Corvette 5.7L High Idle 1400 RPM VIN: 1C1AY0789E HEEEELLLLLPPPPP!!! This car is driving me crazy, and this is my second post on it. Initially it had a stumble at tip in and used excessive fuel. By replacing the coolant temp sensor by the GM TSB, replacing the control module, the O2 sensor, and performing a f... |
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| 1991 Chevrolet R2500 Suburban Silverado 7.4L 2-3 shift VIN: 1GNGR26N6M hi group this vehicle intermittently goes into failsafe mode second gear only, was at another repair facility they replaced all solenoids, still same issue, know its mine found low voltage to trans 4volts checked ignition switch had burned contacts internally ... |
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| 1994 Chevrolet Beretta 2.2L Excessive Emissions, Poor Idle Quality VIN: 1G1LV154DR Hi Everyone, This car came to the shop for a external head gasket leak. The head was resurfaced, leak checked, and valves ground. Also misc. tuneup items with thermostat. After the above work while we were doing the run in, the car ran very poorly at idle. W... |
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| 1995 Chevrolet Blazer 4.3L Hesitation, Surge, Cuts out VIN: 1GNDT13W3S Hey guys We need some help with thi Blazer. It came in With a bad miss under load it wiil idle fine starts good and runs good to about half throttle at that point it acts like a bad miss or starving for fuel.It has never set any codes. We started with Cap ,Rot... |
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| 1996 Chevrolet Cavalier LS 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Poor Fuel Economy, MIL Lamp on VIN: 1G1JF5245T Car came in with a broken rod. The customer declined a rebuilt and requested a used engine. We obtained one from a 96 Cavalier (VIN# [...]) with 80,000 miles. When the car was started for thr first time it idled very rough with black smoke out the ... Trouble codes: P0171, P0300 |
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| 1996 Chevrolet K1500 5.7L brake system VIN: 2GTEK19R2T gentlemen, this vehicle has had a problem with poor stopping ability at high speed braking, as long as my customer has owned it. it has larger than normal tires on it {35 x 12.5's} he was sold an aftermarket brake conversion kit to change over the drum brakes... |
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| 1997 Chevrolet Tahoe LS 5.7L dies VIN: 1GNEK13R6V hello fellow tech's,my problem is a tahoe that i have replaced the fuel pump module in the tank twice in the last 2-weeks.the vehicle will run fine until parked and then with no warning will not start.no fuel pressure.i have voltage at fuel pump and good groun... |
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| 1998 Chevrolet Malibu 3.1L hard start VIN: 1G1ND52M7W We prsently are working on this vehicle that has a hard start more cold and somrtimes hot. It will crank over fine but it may take a longer crank time, will emit black smoke out of the back. may flare up to 2000rpm and back down, run rough and feel like it is ... |
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| 1998 Chevrolet Malibu LS 3.1L cooling fan VIN: 1G1NE52M2W Hi all, I have this Malibu that came in with the customer complaining about the cooling fans won't come on. I tested the cooling fans by entering the test on the scanner, and they seem to operate as required. So I'm thinking that the computer is not grounding ... |
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| 1998 Geo TRACKER 1.6L MIL Lamp on VIN: 2CNBJ186W6 Hi Folks, i got this one that has Mil light on always, but i don't know, how can i get DTCs by blink mil light or if it can be do it, because i have not Suzuki scanner.Also i've been not able to find the Suzuki diagnostic connector. (car is not OBD II). Does a... |
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| 1991 Oldsmobile Cutlass Supreme 3.1L HIGH NOx VIN: 1G3WH54T7M HI EVERYONE. THIS VEHICLE IS A HAIR PULLER. I SAY THIS BECAUSE OF THE EMISSIONS TESTING. THIS VEHICLE CAME IN TO US BECAUSE IT FAILED NOx ON THE STATE EMISSIONS TEST. I HAVE A FIVE GAS ANALYZE HERE AT THE SHOP AND WITH POWER BREAKING IT AT 1500 RPM THE NOx INC... |
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| 1997 Pontiac Grand Prix GTP 3.8L abs module VIN: 1G2WP1212V when this car is in reverse...and the car moves over 5mph the abs shuts off and gives a code...low system voltage..it does not do it everytime...i watched it on a scanner..the voltage does drop from 13.4 to 2.4 volts...system voltage stays above 13.5 volts.(ba... |
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| 2000 Pontiac Grand Am SE 3.4L turn signals I replaced t/s switch a couple weeks ago and the same problem has returned (intermitant inop).Right after I changed it she got a recall notice on the t/s switch.Is there any other known problems with other parts or did I get a defective switch from the dealer?... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1981 Cadillac DeVille 6.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1G6AD6990B It is a loosing battle to try to repair a vehicle when parts are not available, especially when it was a problem child from the first. Check cam timing when vac is low and no vac. leaks. Trouble codes: 15 (coolant sensor), 19. |
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| 1995 Chevrolet C1500 4.3L Poor Idle Quality, Stall, TAIL LIGHTS VIN: 1GCEC14Z45 There was a corroded ground between the frame and the body. I checked the grounds from the battery and the body and to the block but didn't check the ground that was important. I guess I was chasing my tail lights on this one. All emails that I received on thi... |
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| 1997 Chevrolet Monte Carlo Z34 3.4L Poor Idle Quality, Misfire VIN: 2G1WX12XXV first thing I must say is that I did not work on car the first time, another tech in shop did and set cams with borrowed tool and marked cam gears for future, so when got it and fixed valves that were leaking and fixed timing chain tentioner that was broke and... Trouble codes: P0300 (multiple misfire detected). |
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| 1999 Chevrolet Tracker 2.0L engine VIN: 2CNBJ13C5X Thanks for taking the time to reply on this one. Best advice for pinpointing it comes from John [...]'sir i had i have done a couple of head gasketson these fot this reason.how i checked them was by cleaning the area and drying it .then i sprayed doc sholls f... |
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| 2000 Chevrolet Impala 3.4L Stall VIN: 2G1WF52E5Y Recieved 3 replies thanks Tim from Florida Don from Kentucky Peter from New Jersey. We have not made up our minds. Not to many replys if we by VETRONIT will repost [...] |
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| 2000 Chevrolet Prizm 1.8L Excessive Emissions, Poor Fuel Economy VIN: 1Y1SK5281Y thanks for all the replies, no luck at all, maybe next time. returned the vehcile to the customer, exhausted all tech. lines and iatn. |
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| 2002 Chevrolet Silverado 2500 6.0L valve train VIN: 1GCHK29U12 Thanks to all for your help. General motors sent an expert from the factory here and advised us to put a new engine in it. He has heard of the flat cam lobe theory but doesnt beleive that is the problem. No one seems to be sure what the problem is but my gut f... |
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| 1995 GMC K1500 Sierra SL 5.7L Mechanical VIN: 3GNHK15K1T thanks alot for the replies! (total of twelve) 95 was sort of a jump year for gm, and others i'm sure, to obd2. this didn't help on the diagnosis much. turns out i was able to enter a tire size calibration feature in the ebcm with my tech2. the exact tire si... |
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| 1994 Pontiac Grand Am SE 3.1L Stall VIN: 1GN375W684 Thanks to everyone who responded to this problem I had with the grand am. I went in this morning and I took it for a good test ride, and when I returned I re-scanned it and believe it or not, I did come up with a code which turned out to be the EGR valve so I ... |
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| 2000 Pontiac Bonneville SE 3.8L heater VIN: 1G2HX54KSY replaced blend door actuator pt.#[...] fan worked fine |
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| 2002 Pontiac Montana 3.4L Misfire VIN: 1GMDV03E02 Thanks to all who replied. We did an injector flush and this seems to have fixed the problem. The car has bee gone for 10 days now. |
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| 1997 Saturn SL 1.9L Mechanical VIN: 1G8ZF528XV Thanks for all the replies. Most said blocking rings should help. I did find a TSB about trans sticking in 1st and 2nd. Replacing the gears and blocking rings was the fix. I did drain the fluid and add an additive that didn't seem to help with what little time... |
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