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Professional Automotive Repair Technical Discussions for January 15, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1992 Cadillac Seville 4.9L Pass Key VIN: 1G6KY53BXN Anti theft system is engaged and won't allow vehicle to start. Have checked all fuse boxes and all systems appear to have power and no shorts. All checks keep pointing back to the pass key system. Short of pulling out the tumbler and key, is there any experien... |
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| 1993 Chevrolet S10 Blazer 4.3L no start VIN: 1GNT13W9P2 This car is kicking my butt. It came in with a no start problem which only occurs when cold, and not all the time then. I have tested fuel pressure, spark, injectors, timing, module and coil. All check out good. If you spray a little ether in the throttle body... |
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| 1998 Chevrolet Tahoe LS 5.7L No Start VIN: 1GNEK13R3W Hi all, this Tahoe was towed in , no start, dead battery. Someone else diagnosed faulty fuel pump. I charged battery and checked fuel pressure, 50psi. I replaced fuel pump, now have 55 psi. Truck started and ran well. 2 days later before delivery the truck wou... |
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| 1997 GMC Savana 2500 5.0L Hesitation VIN: 1GTFG29M4V Hello. I have this contractors van that has an intermittent hesitation. I have only felt this hesitation once and that was it (not enough time to hook up any diagnostic equipment). The customer says it seems to do it after a hot soak but it will do it first th... |
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| 1999 GMC Savana 2500 5.7L No Start Vehicle came into shop as a no start. I check fuel pressure which was irratic between 63 to 58lbs. System would not hold pressure. I installed a fuel pump which corrected these problems. Vehicle started up, ran good with no codes. Let vehicle outside overnight... |
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| 1997 Pontiac Grand Prix SE 3.8L No Start, extended cranking VIN: 1G3CW69B2G hi group, this is the second time that I've posted this car (this time with the proper VIN). We've gone over this car with a fine tooth comb but we're missing something. Every now and then the car will have an extended crank situation. it's not bad but it is n... |
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| 2000 Pontiac Grand Prix SE 3.8L No Start, Stall Good evening fellow techs. I'm working on a 2000 grand prix that has an intermittent no start and stall problem. I will try to give the information in the order it has happened.thanks in advance for any help provided. car was towed in as a no start, went to ch... |
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| 1996 Saturn SL2 1.9L Hesitation, Lack of power VIN: 1G827FJ329 Saturn techs, need help on a 96 Saturn SL2 that has a lack of power under load especially on 3rd gear between 3000 rpm to 4000 rpm when the engine at operating temp. I have a code P0326 Too much knock detected. There is no obvious mechanical engine noise prese... Trouble codes: P0326 (Too Much Knock Present) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1995 Buick Century Special 3.1L Surge, Misfire, MIL Lamp on VIN: 1G4AG85M8S First I would to thank all 5 techs.that took time out of there busy day to help us out. One of the replies was why we install NGK spark plugs ?? We had using Ngk spark plugs before on GM car and have not had any problems and figured that if GM uses in the late... Trouble codes: 341 (intermittent cam sensor signal), 705 (prndl switch failure), 740 (tcc failure). |
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| 1977 Chevrolet Corvette 5.7L Compressor clutch VIN: 1Z37L7S412 Hi all, Due to a clerical error, I am unable to give thanks to those specifically who sent me faxes with the factory wiring diagram. Thanks to those who did send me the diagrams and next time I will try to have them sent to me at home so that the cover sheet... |
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| 1993 Chevrolet Camaro Indianapolis 500 Pace Car 5.7L Hesitation, Surge VIN: 2G1FP22P0P First off, thanks to all who responded. All responses were very helpful. Chris [...]. and Paul hit it on the nose with the plug wires. Some had suggested injector failures or TCC problem, which would have been my next step but the plug wires were the quickest and ... Trouble codes: 28 (Quad Driver 3 Failure Cooling fan related). |
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| 1996 Chevrolet S10 2.2L No Start, Poor Idle Quality, Stall, MIL Lamp on VIN: 1GCCS1445T Thanks to each and every fellow tech that replied to this help request it is appreciated. I was right on track with timing chain and a few others agreed as well, this truck had everything perfect even the compression was normal.The tensioner was the culprit co... Trouble codes: P0108. |
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| 1999 Chevrolet K2500 5.7L Hesitation, Stall, MIL Lamp on VIN: 12K7342U4K Had cracked MAF tube thank you Eric. Where the baffle drops down was split. Looked fine from top down. But when taken off their was a split on the bottom side. Thanks for such a grate network. |
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| 1999 Chevrolet Express 3500 5.7L Hesitation VIN: 1GCHG39R4X I had one fail in mode 6. Cold koeo the maf showed 3gps. Unpluged maf computer showed 00. Replaced maf and it runs good. thanks |
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| 1999 Chevrolet Tahoe LS 5.7L tcc VIN: 1GNEK13R8X After talking to several trans guys I had SUN TRANSMISSION pin the TCC regulator valve in the valve body to correct the condition and problem is solved and customer is happy.My trans guy has done this to multiple vehicles with good sucess and has submitted thi... |
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| 2002 Chevrolet Express 1500 4.3L Poor Fuel Economy, MIL Lamp on VIN: 1GCEG15W82 I want to thank everyone who took the time to email me on this problem. The fix was to replace the map sensor. The flow chart that was emailed to me showed the map sensor after running was the sensor that detected the egr opening on this van. We replaced the d... |
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| 2002 Chevrolet Silverado 1500 4.3L No Start, Stall, Misfire VIN: 1GCEC14W62 I came in the next day and it started right up and runs good. I don't know for sure what was wrong but I think it's in the distributor there is a new update distributor for it. I don't have the cartage for this 02 it's on order from Snap-On so the info on the ... Trouble codes: P0300. |
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| 1993 GMC Safari SLE 4.3L Cruise control VIN: 1GKDM19Z9P Ryan, Peter, Jeff, and Central automotive all said to check the brake switch. Clyde said to check the cruise switch. Romain was the only one who mentioned the vacuum dump valve on the brake pedal. I had already ruled out the cruise switch and electrical brake ... |
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| 1988 Oldsmobile Cutlass Ciera Brougham 3.8L No Start, Poor Idle Quality, INTERMITTENT VIN: 2G3AM5130J The general answers were fuel pump (which we already did), fuel pressure regulator, crank sensor problems, weak spark from coils, injector problems, and carbon build-up. Eliminated fuel pump, pressure regulator, checked crank sensor pattern after posting, sp... |
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| 1994 Oldsmobile Achieva S 2.3L engine VIN: 1G3NL553ZR Thank you all for the advice; however, the root problem of overheating after short trip down the road still persists. Radiator was replaced, thermostat goes in only one way, heater core flows very freely & provides great heat. Thermostat has since been removed... |
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| 1998 Oldsmobile Silhouette Premiere 3.4L convertor VIN: 1GHDX03E7W customer took vehicle wil understading that may be normal - could not find any problems - will post again if syptoms get worse thanks to all who replied |
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| 2001 Oldsmobile Intrigue GX 3.5L steering assembly VIN: 1G3WH52H51 Hi everyone, Thanks to all of you that responded so quickly. Adam,Robert,and Bruce,all suggested the lube kit or replacement of the intermediate shaft. There were a few other responces that suggested worn suspension parts. I dismissed them-as I had checked f... |
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| 2001 Oldsmobile Silhouette Premiere 3.4L cooling fans VIN: 1GHDX12EX1 First thanks to all of you that sent us an answer. A couple of you said GM is having trouble with ther computers controlling the fans in this year. We went through the systems and did not see any reason for the computer failing to control the fan operation. Bu... |
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| 1997 Pontiac Grand Prix SE 3.8L long crank intermitt VIN: 2G3EFT5VE1 hi group, i'm going to close this request for now (reopen with the proper vin). I received 14 replies all mostly pointing to the fuel pressure regulator. The customer finally brought the car back on Tuesday and we replaced the regulator & crank sensor with GM ... |
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| 2000 Saturn LS1 2.2L tcc VIN: 1G8JU52F7Y ended up taking to saturn for confirmation of our diagnosis of a pressure leak in the valve body / pump area. they also replaced switch assy. saturn ended up pay for most of the repair. |
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