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Professional Automotive Repair Technical Discussions for April 13, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1995 Buick LeSabre Custom 3.8L Excessive Emissions, MIL Lamp on VIN: 1G4HP52L5S Hi All, Here we go again. 95 Low miles LeSabre has MIL on all the time. Clear Codes and returns right away. Even sets the code KOEO. Before I saw the vehicle the Knock Sensor was replaced and the Second Computer was installed. Visual inspection shows no proble... Trouble codes: P0325 (EST system Failure) |
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| 1994 Cadillac Seville SLS 4.6L Surge, Cuts out, Misfire VIN: 1G6KS52Y6R misses under lite load only hot has new plugwires and plugs have ck,injector pulse and pulsewidth at the time it misses was6.4ms injector is new wiring was ck, loaded coilpack with spark testers ck all cyl. ok but intermitet spark some times on all cyl. |
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| 1996 Chevrolet Lumina 3.1L Misfire, MIL Lamp on VIN: 2G1WL52MXT Need help on where to go with a chevy misfire. This is a freind of the boss, so he doesn't want to hear that I can't find it.Car has had a history of a 300 code. Previous repairs have replaced plugs, wires and all 6 injectors. At idle, you can feel the engine ... Trouble codes: P0300 |
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| 1997 Chevrolet Corvette 5.7L traction control VIN: 1G1YY22G0V Hi readers,I have very little to no info on the traction control system for this Corvette. It sets a code P1571 (tcs pwm circ. no freq/signal) I cleared the code by the on board computer and also with a snap on scanner just to check. From that point if you sta... |
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| 1997 Chevrolet Lumina 3.1L No Start VIN: 2G1WLV52M9 I have a 1997 Lumina 3.1 L with a recent rebuilt motor. Engine was installed and ran for a few miles then suddenly had a no start condition. After diagnosing, found the 7X Crank Position sensor to be bad. Replaced with a known good sensor and am now only getti... |
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| 1998 Chevrolet Express 1500 4.3L No Start, Stall VIN: 1GCFG15W3W replaced vcm w/ used. would crank w/ spark but inj. pulse disappears w/ code p1631 (pass lock system fault security)decided i better reflash vcm. still had same results, even after reprogramming vtd in ign switch (code p1631 &no start)i replaced ign switch and... Trouble codes: P1631 |
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| 1999 Chevrolet Blazer 4.3L 4wd VIN: 1GNDT13W5X the |
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| 2002 Chevrolet S10 2.2L Hesitation VIN: 1GCC51431K I was wondering if any one has ran into a problem on these s10 pickups where they break up under load. I cant think of anythin else to do. I replace the plugs the module the coil packs and the wires, Then i replaced the fuel injectors. Fuel press. is well with... |
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| 2004 Chevrolet Silverado 1500 4.8L new cruise switch VIN: 1GCEC14V44 We have a fleet of these 04 1500 series base pickups to install cruise control on. We did this last year on this company's 03 trucks and all that was involved was to add the combo switch for a cruise equiped vehicle and all the other parts were on the vehicle.... |
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| 1997 GMC K1500 Suburban 5.7L p/s pump VIN: 3GKFK16R6V this fine vehicle came in awhile back with high effort steering concern, sold them a ps pump & pressure hose, came back three weeks later with no assist, broken ps pump shaft, another reman. ps pump & another three weeks & here we go again you're getting ahead... |
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| 1992 Oldsmobile Cutlass Supreme 3.1L dash lights customer was on a trip. turned the key off anad the oil light charge light and the seatbelt light remained on. pulled battery cable so the battery did not drain. dropped it off on friday and the first thing i thought i would try was the ignition switch. before... |
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| 1995 Pontiac Bonneville SE 3.8L security VIN: 1G2HX52K8S have p1626/p1629 theft codes,need to know if anyone can tell me where to find the theft detterent module,i believe it is behind instrument panel meaning dash has to be removed.by reading test everything has to hooked up to function so after removing module wou... |
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| 1999 Saturn SL2 1.9L Hesitation, Misfire, MIL Lamp on VIN: 1G8ZJ5276X Vehicle had a code P0172 and a code P0404. Also the vehcile seems to misfire and/or surge at cruising speed. No missfire codes in the ECM. Idle seems to be a bit hi, around 950-1050 rpm, checked for vacuum leaks, but none found. I did see a posted fix of an i... Trouble codes: P0172 (System too rich bank 1), P0404 (EGR solenoid performance problem) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1993 Buick LeSabre Custom 3.8L no shift VIN: 1G4HP53L5P Hi Guys, Thanks for the overwelming response. I can show the customer how you all support what I already told them, that the damage was already done. At times customers will have selective hearing. Found out later that they just purchased the vehicle, with the... |
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| 1999 Buick Regal GS 3.8L Surge VIN: 2G4WF521XX had this ecm flashed for drivability update, talked to the owner a couple of days later and he reported that the car was running well, he also commented that the A/T seemed to shift better. We also found out that if we overroad ecm control of the lock-up conve... |
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| 1992 Cadillac DeVille 4.9L Stall VIN: 1G6CD53B6N The car has been gone 3 weeks and the customer told me today that the problem appears to be fixed. Mark from Louisiana , a GM tech, said that I should try running a redundant ground wire from the back of the alternator, (where the PCM & BCM ground wires attach... |
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| 1995 Chevrolet Lumina LS 3.4L ps system VIN: 2G1WN52XXS Thanks to all who replied. Several of you recommended using a AC Delco power steering hose. That fixed it!! |
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| 1995 Chevrolet Lumina APV 3.8L Stall VIN: 1GNDU06L4S After replacing cam and crank sensors, problem still occurred. Installed used pcm. Had to switch calibration chip to new pcm. Engine has been running and driving fine for 2 days now. I hate to just throw parts at a vehicle but I don't know how else I would hav... |
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| 1995 Chevrolet C3500 6.5L bucks VIN: 1GBKC34FOS im fairly certain the injection pump was failing. how ever repairs were declined. thank you all for your help. Trouble codes: 35 (inj. pulse width error short responce), 36 (inj. pulse width error long responce). |
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| 1996 Chevrolet Camaro 3.8L Stall, Misfire, MIL Lamp on VIN: 2G1FP32K7T thanks for all the help.i feel kind of stupid but here goes. the fuel pressure was the prob.i had checked the pressure a couple of times and it was in specs.i hadnt checked it when it was at its worse.replaced fuel pump and solved prob.one other thing i should... Trouble codes: P0300. |
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| 1998 Chevrolet Astro 4.3L Poor Idle Quality, Misfire, hard start cold VIN: 1GNDM19W0W We took everybodys ideas and perfromed an fuel injection service and it fixed the cold start problem. Thank you all for your help and ideas. Trouble codes: P0303, P0300. |
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| 1998 Chevrolet Malibu 2.4L No Start, Cuts out, Stall VIN: 1G1ND52T2W fellow techs thanks for your support. remember i replaced the module early on at the tune up stage. the customers stated car was hard to start and died at times so i proceed to diagnose a phantom problem. well hear it is as i understand it the dealer parts dep... |
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| 1998 Chevrolet Tahoe 5.7L Misfire, MIL Lamp on VIN: 1GNEK13R3X Hi Techs Sorry it took so long to close this post but i was waiting for the units next service. Guess what no p0300 the only code was for bank 1 sensor 2 o2 sensor so i pinned that out and the heater was not working i replaced it with a ac delco sensor and am ... Trouble codes: P0300 (random miss fire). |
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| 1991 GMC Sonoma SLE 2.5L Excessive Emissions, Poor Idle Quality, Cuts out, Misfire VIN: 1GTCS14A5M Hi, for some reason the 'fix' didn't post or clear my account. Problem was in the distributor. THe star wheel/reluctor was turning on the shaft and affecting timing. Replaced distributor and all is now well. |
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| 1993 GMC G3500 Vandura 6.2L Excessive Emissions VIN: 2GDHG3IJ5P Hi guys and girls,Injectors were tested again and they found 3 bad ones,tuff eh since this is in a @#$$%^&*( G van with very little room.Now with decent injectors he,s happy.Big thanks to everyone who replied.By for know.K.W. |
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| 1991 Oldsmobile Cutlass Ciera 3.3L Gearbox VIN: 2227894532 I must thank Dennis [...] who not only tried to fax and we was faced with a few problems he went out of his way and emailed me all that was required Via his wife which I thought was really good and there was a lot as well I have emailed Dennis to thank him ... |
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| 2000 Pontiac Grand Am SE 3.4L turn signals Well once again iatn does it almost all replies said hazard flasher switch which is what it ended up being.Replaced the hazard switch and no complaints so far .Thanks to all who replied |
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| 2000 Pontiac Montana 3.4L Right sliding door VIN: 1GMDX03E0Y As most of the replies stated. There is a recall on this system. Although, the recall did not match my exact symptoms, Most said do the recall first and see if it fixes the problem anyway. That is what we did. The dealership performed the recall repair and it ... |
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| 1995 Saturn SL1 1.9L Hesitation, Cuts out, Stall VIN: 1G8ZH5286S Multiple replys said coolant temp sensor problems and egr opening too soon problems, but none were my problem. This was a snake it would have bit you issue that I have seen multiple times but it did not click. VACCUM LEAK AT PCV HOSE WAS THE PROBLEM. There wer... |
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