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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 10, 2004
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Open Help Requests for GM
Help Request Answers
1992 Buick Regal 3.8L Poor Idle Quality, Surge, Cuts out, Stall VIN: ZG4WB54L3N
I got this car with very bad driveabilty Prob. Scaned for codes and found none ck fuel presure and was in specs. Car will not idle on own and can be hard to keep runing even above idle. Disconected maf and car smothed out and idle ok. Replaced maf same problem...
1994 Buick Roadmaster 5.7L Cooling Systems VIN: 1G4BR82P0R
Hello GM techs. This car came in for routine service. When we went to check the coolant we found quite a bit of oil in the coolant bottle. Our first thought was a bad oil cooler in the radiator so we pulled the radiator and sent it in to get checked out. Unfor...
1995 Cadillac DeVille Concours 4.6L Poor Idle Quality, Cuts out, Stall VIN: 1G6KF52YXS
This Caddy is getting me furious. I got this beast after another tech spent two weeks on it, and has now since quit here. So now I have the luxury of working on it. This is what has been happening so far, prior to me working on car, although all work is sketch...
1997 Cadillac DeVille 4.6L anti-theft VIN: 1G6KD54Y9V
Dash display's "theft system problem". Has current code B2711. Engine starts and runs.
1984 Chevrolet C10 Scottsdale 5.0L no drive or rev VIN: 2GCEC14H7E
bought this truck with inop trans, removed and insp. just o.h. resealed anyways reinstalled still no fwd or rev(unless @ 3000 rpm then creeps) line press ok in all ranges any help would be apprieciated thank you in advance.
1998 Chevrolet Blazer 4.3L Misfire, MIL Lamp on VIN: 1GNDT13W3W
Blazer has a very severe loss of power due to misfires in cylinders #1, #5,& #6 at highway speeds in OD climbing a grade. It only manifests itself after a steady acceleration for 10 seconds or so. FP holds at near 60 psi during the power loss.If you allow it s... Trouble codes: P0300 (random misfire)
1994 Oldsmobile 98 Regency 3.8L MIL Lamp on, DTC P0641 QDM ERROR VIN: 1G3HY52K8S
we installed a used trans check engine light is on checked bulletins ) possible a short in the internal wiring harness on the trans we installed the original wiring harness and all the solenoids from the used trans customer also went to the dealer to check the... Trouble codes: P0641 (qdm error high)
1997 Oldsmobile Achieva S 2.4L vtd passlock 1 VIN: 1G3NL52T0V
Hello, this Achieva (N body) will not start reliably no matter how many parts we put on it. Even now in the new cluster the security light doesn't act right. It flashes erraticly. I would love to bypass the whole vtd system. Does anyone know how? Right now the...
1992 Pontiac Grand Am SE 2.3L MIL Lamp on VIN: 1G2NES134N
When the car is at operating temp. I came off the highway and stopped at a light. On accel. it felt as if the trans. was still in lock up or OD, pumped the pedal to WOT a few times and back to normal. At the shop, I found the trans. fluid aerated. Removed pan ... Trouble codes: 26 (quad driver error)
1999 Pontiac Grand Am SE 3.4L fuel injectors VIN: 1G2NE52E3X
How do we by-pass security system to make the injectors work?-thanks for any help-

Fixes & Summaries for GM
Fix/Summary Answers
1979 Chevrolet K20 Cheyenne 6.6L Temp gauge VIN: CKR249J158
Replaced temp sending unit with a GM part and gauge reads 1/3 at operating temp.(This is after replacing the NAPA unit twice so somthing said for OE parts)
1987 Chevrolet S10 Blazer Sport 2.8L Must manual shift for overdrive VIN: 1GNCS18R7H
Sorry this has taken so long for me to respond. I haven't actually fixed this truck yet. From what everyone is telling me including a local shop which I know does good work, the front sprag is going to be the problem. I'm still driving it with it like this so ...
1994 Chevrolet S10 Blazer Tahoe 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1GNDT13W2R
I recieved a reponse from Richard [...]. He said that there might be an intake valve not opening. He was only part right there were 3 intake valves on the driverside that were bent thus not allowing the fuel to get into the cylinders. The fuel was backing up in...
1996 Chevrolet C2500 Cheyenne 5.7L No Start VIN: 1GCGC24R1T
well gentz, this fix goes to tell us that we should not always spectulate componant failure. after just about pulling my hair out i figured i would go back to old school techniques and trace each related wire and to my amazement i found the purple wire going t... Trouble codes: P0336, P0337.
1997 Chevrolet K1500 Cheyenne 6.5L Excessive Emissions VIN: 1GTEK19S1V
i found a broken wire at the egr vent solenoid it didnt look broken until i pulled on it now everything is ok thank you Trouble codes: 101 (mass air flow), 401 (egr flow in suffient).
2000 Chevrolet Silverado 1500 5.3L Fuel Gauge VIN: 1GCEC19TXY
Iam so very sorry I haven't gotten back to you guys sooner. I came back from helping a friend in Florida and found my computer gone, along with a few other things. Things are back now and returned to semi-normal. It was the ignition switch that was causing t...
2001 Chevrolet Lumina 3.1L Cuts out, MIL Lamp on VIN: 2G1WKL52J8
Well this one is fixed ,most replies were for pcm flexing , pin fit etc. THE FIX WAS: There are two vertical studs on the left of the heater case under hood with facrory rubber caps to protect the harness . The bottom cap had fallen of causing the stut to shor... Trouble codes: P0122.
1997 GMC K1500 Sierra SL 5.7L Cuts out, Stall, Misfire, backfire through exh VIN: 1GTEK19R2V
after giving all suggestions proper consideration, all items tested good. found problem by accident. i bumped the pcm and it started running poorly, tapped it again and it ran well, tapped again ran poorly, and on and on. replaced and reprogrammed pcm w/knock ...
2002 Oldsmobile Bravada 4.2L remote door locks VIN: 1GHDT13S92
hey guys late fix post caused by iatn computer down time. reprogramming of liftgate module did the trick. i usually check tsb's and just plane blew it this time . thank's to all that helped bill
1995 Other GM 16 pass bus 5.7L Stall VIN: 1GBKH32K7S
Thanks for the help folks. In checking the pickup coil on the new dist. it was very weak in AC output. I did some more followup and found out that the first complaint was really one of a boggy jerking on accel(read miss on accel). I re-installed the original d...
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