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Professional Automotive Repair Technical Discussions for February 23, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1992 Buick Skylark Custom 3.3L Cuts out, Stall VIN: 1G4AN54NXN Hi ! This car came in and out several times during last month, because i couldn't duplicate the problem at the shop. Custmer said , when she drive about 30min(local or fwy), this vehicle start to sluggish few second and then stall. if she try to start right aw... Trouble codes: 31 (park/neutral switch /circuit problem) |
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| 1990 Cadillac DeVille 4.5L Poor Idle Quality, Hesitation, Poor Fuel Economy VIN: IG6CD133XL I am getting to much fuel pressure when i turn the ignition on. There is also a fuel drop. I have replaced fuel pump.filter, and regulator. I checked the fuel return line for restrictions and did not find any. |
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| 1990 Cadillac Seville 4.5L No Start, Cuts out, Stall VIN: 1G6KS5335L car came in with complaint of dies after hot and will not start for 5 min. I drove for about 30 min. and made it back to the shop before it died. It would not start so I removed exhaust pipe from mainfolds. car started so we had a cat put on it. the gs did not... Trouble codes: 74 (mat interupted) |
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| 1988 Chevrolet K2500 Cheyenne 5.7L Poor Idle Quality VIN: 1GCFK24K1J Help please! I'm having a problem with this pickup. It's running lean and I'm not sure where to go from here. Spraying carb cleaner into the throttle body at idle or at higher RPM's smooths things out and it sounds better. The fuel pressure is 12 psi at idle, ... Trouble codes: 44 (System lean) |
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| 1992 Chevrolet K2500 Cheyenne 6.5L Mechanical VIN: 1GCGK24F3N Truck came in with the overdrive planetary assy. wiped out. r&r trans. replaced all the hard parts that were bad,new rebuild and reinstalled. have all the gears and everything seems to work except for o/d,when it should shift to o/d it just does not-if let off... |
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| 1995 Chevrolet K1500 5.7L spark knock VIN: 2GCEK19K6S This is a wierd one. We have recieved this on from a local engine rebuilder. THey rebuilt this engine for the customer who put it in himself. It later had an engine failure they say due to excessive spark knock. Engine shop replaced motor themselves this time ... |
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| 1997 Chevrolet Cavalier Z24 2.4L No Start, MIL Lamp on VIN: 3G1JF12T2V Sorry I don't have the codes available but unfortunatly I left them @ work. Customer brought in car due to excessive oil in the crank case. Fixed the problem and replaced the spark plugs and wires because there was too much arking. The car ran fine until a col... |
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| 1998 Chevrolet K1500 Suburban LS 5.7L No Start, Stall, Misfire, MIL Lamp on VIN: 3GNFK16R8W customer stays vehicle will backfire, ping and stall at times, will turn mil on and later will go off/ test drove for 15 miles it did it one time only/ at a stop on take off no power/ pinging/ but no code was set/ other techs tell me to trow a crank sensor on ... Trouble codes: P1351 (ignition) |
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| 2000 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 3G1JC5243Y Hello: I have a trouble code P1202, gas mass sensor frequency low. my scanner readings for the gass mass sensor are, 0.00 g/s, and 0 Hz, I am reading 352 Psi, and 2% fuel level, I would like to know if anyone has had any experience with this code. I have no d... Trouble codes: P1202 (Gas Mass Sensor Frequency Low) |
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| 2000 Chevrolet Venture 3.4L filling gas tank VIN: 1GNDX03E1Y do the van have problem when filling the gas tank you have to fill the tank slow or the pump kick off |
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| 2002 Chevrolet Silverado 1500 5.3L converter VIN: 1GCEC14T52 I basically would like someone to describe for me in words that an idiot (me) could understand the procedure for blocking the pwm valve to eliminate the pwm control of the tcc. I believe this would fix the prob I am having, but I am unsure of what all is invol... |
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| 1991 GMC K3500 Sierra 7.4L computer VIN: 1GCHC34NXM have let vehicle idle from cold start. idles as computer desires till warm. then idle will rise when given throttle and let off will not reset to desired comp idle. some times rests at 50 rpm above and other times 250 rpm above. will stay in open loop at idle ... |
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| 1990 Oldsmobile Toronado 3.8L Dash display/climate control VIN: 1G3EU13CXL When I got this headache I began with the normal circuit checks from GM trouble tree. IPC power and grounds good. I decided to check behind the tech that installed the ABS assembly to make sure nothing was left loose under the dash. As I inspected the wiring t... |
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| 1991 Oldsmobile Cutlass Ciera 3.3L No Start VIN: 2G3AL54N6M At times, after driven to operating temperature when vehicle is shut off and allowed to set for 5-30 min. it will not restart. Cranks good, has 44 psi at the rail, excellent spark at the plugs. Compression is within spec on all 6 cyl, plugs burn clean, vehicle... Trouble codes: 27 (tcc solenoid 2nd gear switch) |
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| 1997 Oldsmobile Achieva S 3.1L Accessories VIN: 1G3NL52M2V Hi group ,i have a burning fuse ,it's the ERLS 20 amp fuse in the engine compartement fuse center . That fuse drive many components ,canister purge,vent ,transaxle selenoid a/c clutch relay ... Check every thing can not duplicate the problem . The fuse been r... |
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| 1992 Pontiac Grand Am SE 2.3L Valves VIN: 1G2NE5431N Hello Techs, this Grand Am came in as a no start. back fired through intake when trying to start it. Checked and found no compression on cylinders. Removed timing chain cover and found that tensioner was broken and not holding chain tight. When I rotated engin... |
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| 1993 Pontiac Bonneville SE 3.8L No Start VIN: 1G2HX53L5P Car came in with a crank no start. At first could not get car to act up. Next AM, no start- we have spark and Inj pulse, and power to pump. Replace pump,fires right up, road tested OK. Returned to cust. 24 hours later- cust calls, crank, no start. Once again n... Trouble codes: 26 (Quad driver mod failure) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1996 Buick Skylark Custom 3.1L MIL Lamp on, Blown Fuse VIN: 1G4NJ52M9T Thanks to all who replied. After letting the car sit and cool over night, there was a small puddle of Dexcool under the right front(was not leaking when hot). Upon further insp. I saw that the a/c comp. was very wet. The leak was traced to two places, as sugge... Trouble codes: P0753, P0758, P1573, P1654, P1655, P1675. |
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| 1998 Buick LeSabre Limited 3.8L Upper Intake Manifold VIN: 1G4HR52K8W Thank you one and all. I looked into this engine with a fine tooth comb and the vacuum tube from the fuel pressure regulator had a very strong smell of gas and turning on the key produced fuel from the vacuum side of the regulator. I am replacing all the neces... |
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| 1987 Chevrolet R10 Scottsdale 5.7L Excessive Emissions VIN: 1GCER14K2H Thanks Guys! Had four responses. A special thanks to Edward from Virgina, He hit the nail on the head. I missed that the 02 sensor had a dedicated ground. Repaired that ground & all is well. The 02 sensor circuit has a bias of .5 volts & the 02 sensor either p... Trouble codes: 13 (O2 sensor open short). |
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| 1995 Chevrolet Caprice Classic 5.7L Hesitation VIN: 1G1BL52P9S Thank you to everyone for your help. Scott [...] and another, un-named respondent nailed it on the head. It was a dirty MAF sensor. Upon initial inspection of the MAF, it appeared clean. The inlet side has a honeycomb like mesh covering the actual sensor to... |
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| 1995 Chevrolet Caprice Classic 5.7L unknown VIN: 1G1BL52P8S Hi Techs - Nobody nailed this one, but charlie suggested having someone walk around the car while someone else drove it, which helped a lot. We narrowed it down to the P/S front wheel. Upon closer inspection, an alignment shim had been spit out of the upper ... |
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| 1996 Chevrolet S10 2.2L 1-2 shit, and 4th VIN: 1GCCS1446T ok, the code originally was P0753. I replaced 1-2 shift solenoid and 2-3 shift solenoid. part# is same for both. they are only $15, solved problem. thanks to techs that replied, to many to list, you can veiw replies. apparently the wierd shifting when the mil ... |
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| 1998 Chevrolet C3500 Cheyenne 7.4L extended crank VIN: 1GBHC33J7W Thanks to all that replied, the fix seems to have been low voltage while cranking, through the course of testing the OE battery kept needing charged. After a new battery and some driving this unit appears to be fixed or just quit acting up. Thanks for the help... |
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| 1998 Chevrolet K3500 Cheyenne 5.7L Electronic VIN: 1GCHK33RVW Hi techs: Thanks for help and wiring diagrams. Didnt take long to figure it was the relay was causing my problem after I received the diagram. vehicle now works well in 4x4. THANKS AGAIN. |
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| 2001 Chevrolet Impala 3.4L cooling fans VIN: 2G1WF52E61 The fix was the BCM. When I disconnected and reconnected the BCM, the fans and A/C would work fine for a time. With out the BCM being coded the car would not start. So we replaced the BCM at the dealer and they coded it. All is fine now, thanks for all the rep... |
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| 1996 Oldsmobile Cutlass Ciera 3.1L Misfire VIN: 1G3AJ55M3T thanks to all who responded. every led was valuble and accurate. for some reason this vehicle had to be driven for relearn procedures. two injectors #1 had to be replaced. they were below specs. thanks again! Trouble codes: P0301. |
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| 1994 Pontiac Firebird 3.4L No pedal VIN: 2G2FS22SXR Many humble thanks to the ultimate technical resource , replies involved special rituals for bleeding the system and shimming the flywheel all good.Since this project was already in a red ball status I decided to try the adjustable pushrod retrofit idea from J... |
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| 1997 Saturn SW2 1.9L No Start, Poor Idle Quality VIN: 1G8ZK8271V hello again-i recieved about 8 or 9 replies-they were all great- a few hit it right on the nose-it turned out i was a victim of multiple problems-the hard staring was definetly the fuel pump- when you turned the key on the fuel pressure would slowly climb to 4... Trouble codes: P1624 (pcm ram performance), P0507 (idle control system rpm hi). |
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