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Professional Automotive Repair Technical Discussions for March 23, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1992 Cadillac DeVille 4.9L Stall VIN: 1G6CD53B6N The customer states that when the fuel level is 12 gallons or less the vehicle will stall on decel from a slow speed, at idle or while driving at a speed just above idle (5 mph). The customer states that the fuel gauge has also read inaccurately after the stal... |
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| 1999 Cadillac Escalade 5.7L Cuts out, Stall VIN: 1GYEK13R1X Hey group I have this Chevy 5.7 that came in cutting out and stalling. Using the vantage found it to be a bad crank sensor (ckp). Order one from the dealer and when I removed the old one I noticed that it had been rubbing on the reducer gear but I put the new ... Trouble codes: P0339, P0337 |
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| 1985 Chevrolet Corvette 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1YY0783F This is my car. After installing engine I get an intermmittent code 33. The engine runs bad. Key off then key on it will run good, till ck eng. light comes back on.I have cked grounds found three wires on the trans bellhousing bolt top rear of left side cleane... Trouble codes: 33 (mass air high) |
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| 1990 Chevrolet K2500 Cheyenne 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, Hard Start VIN: 1GCGK24KXL This truck came into to the shop with a blown engine, high mileage bucket of junk. I proceeded to put a used motor from a salvage yard in the truck. The motor from the salvage yard had 180000 miles on it, but salvage yard said good runner, good compression, bl... Trouble codes: 34 (MAP Sensor Vacuum Low) |
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| 1993 Chevrolet Astro CL 4.3L 3rd gear VIN: 1GNDM15Z9P Hello, If I may pick your brains? This is my personal ride. She has ,for the last 30k miles(since I bought it) had a thud when shifting into 3rd. It has always been about the same in harshness. Its not an extreme thud, just enough to hear and feel. My 74 omega... |
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| 1997 Chevrolet Astro 4.3L Steering/Hydraboost VIN: 1GBDM19W7V Has a fluid rushing sound! when slowly turning steering wheel @ idle can hear it, but when @ the end of the turn there is no noise? And it is not a whine type noise! Kinda like an air brake releasing sound, fluid gush sound? Vehicle was in an accident & custom... |
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| 1997 Chevrolet Malibu 3.1L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1G1ND52M7V This car came in with a check engine light and a PO300 misfire code, but it wouldn't act up in the stall. Misfire history showed that #5 and #6 had misfired the most. In the stall I had good spark at all the plugs. All the plugs looked good. The injectors all ... Trouble codes: P0300 |
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| 1997 Chevrolet C2500 5.7L backfires on accel VIN: 1GCGK24RXV This truck back fires under load only when hot. Also,upon acceleration the upper intake where the fuel lines and injector harness plugs in it seems to rise while accelerating...is this normal? |
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| 1998 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W5W After some driving the MIL comes on, code P0300 - Random Misfire. Computer scan indicates that the CMP Retard runs between -11 & -14 degrees. CMP Retard spec is 0 to -2 degrees. We need to know why this is occuring. Is CMP Retard adjustable on this vehicle and... Trouble codes: P0300 (random misfire) |
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| 1998 Chevrolet K2500 Suburban 6.5L Poor Idle Quality, Surge, Cuts out, Misfire, Poor Fuel Economy, Engine Races VIN: 3GNGK26F2W Customer states the problem started after his wife filled with fuel on a trip. He has since run 2 tanks of fuel through truck with diesel conditioner added. I pulled the fuel filter and checked the bowl. There was no water in bowl and only marginal amount of s... |
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| 2001 Chevrolet Blazer LS 4.3L Surge, Misfire VIN: 1GNDT13W11 Hi guys, What I have is a cat starting to fail. The back pressure readings are high, and it has a surge / missfire but not bad. It also has a reoccuring EGR code (EGR is good). Using an infared thermometer the temp readings were a little high in the front but ... |
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| 1979 GMC K3500 5.7L fuel gage VIN: 1KL349B530 I need a wiring diagram for this system. Have checked both local gm dealers with no success. Switch valve operates even though the outer case has rotted away. No gage wires have been found in the area, so I need to find out if there is another problem besides ... |
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| 1998 GMC K2500 Sierra SL 6.5L Cuts out, Stall, MIL Lamp on VIN: 1GTGK29F8W The truck came in the shop on the 13th. The first thing I did was connect the scan tool and retieved code P0231 fuel pump feed back circuit voltage low/ shorted. I Have a snapon scanner and in the troubleshooter it indicated that a common cause is the oil pres... Trouble codes: P0231 (Fuel pump feedback circuit low voltage/ short) |
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| 1993 Oldsmobile Cutlass Supreme S 3.4L master cylinder VIN: 1G3WT34X5P Frist i whant to thanks to every one for you time and help. Customer brought the car he said this car never stop good since new. ok some other mecanics replace abs modulator(this is the unit atached to master cyl), also they replace master cylinder. front and ... |
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| 1994 Oldsmobile 88 Royale LS 3.8L No Start, Stall VIN: 1G3HY52L5R This car belongs to one of our secretaries here at the school.Intermittently the car will stall with no warning, normal driving or accelerating or idling no difference. Wait about 20 minutes and it will restart. Also she may park the car and try to restart, wi... |
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| 1991 Pontiac Tempest 3.1L Poor Idle Quality VIN: 1G7LT53T6M Hi all this is my fathers car and I'm having the pain in the neck type prob. everything seems to check out good but the engine just revs up high cold and goes progressivly higher & higher until it gets hot now that would seem like the temp sensor (not)... (iac... |
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| 1994 Pontiac Grand Am SE 2.3L Cooling system VIN: 12GNE553XR Hi guys, This one came in with a broken water outlet on the left end of the engine head. Once replaced, the water pump was noticed leaking as well as the radiator. We replaced the water pump & thermostat, removed the radiator and sent it out for repair. The ra... |
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| 1999 Pontiac Montana 3.4L Surge, Stall VIN: 1GMDX03E4X Hello, thanks for your time reading this. I have a problem with my own Montana. It seems that the engine, at idle, will start to surge with a varience of about 500rpm's for a period of time then the engine will die all together. This problem only happens when ... |
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| 2000 Pontiac Sunfire SE 2.2L Mechanical Hello all, I'm posting this for a fellow tech. We have a personal vehicle here with what appears to be a cyl head gasket leak out of the left front corner. We are a Ford dealer and don't get to crank on these too often. So any advice you have to offer would be... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Chevrolet C1500 Cheyenne 5.7L brake pedal height thanks for all the help, my problem was the wrong master cyl. was bought and installed by the vehicle owner. i pulled it back off this a.m. and found there are two different master cyl. applications for this truck. one has a small bore and the other has a larg... |
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| 1995 Chevrolet K2500 5.7L parking,turn, brakes VIN: IGCGK29K9S Well problem solved and truck back on the road. Had an amazing 23 replies based on my problem. That was fantastic!!! Almost all said to see if it had a trailer harness in the rear. Well it did. The key was that it not only had 1 connector, it had another one t... |
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| 1998 Chevrolet Venture LS 3.4L Surge VIN: 1GNDX03F5W Would like to thank all of you who replied to my request.I went ahead and redrove the vehicle and checked surge to verify was transmission problem.The surge does go away if you lightly tap brake pedal to disengage lockup.I have given customer several options t... Trouble codes: 1870 (powertrain code). |
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| 2001 Chevrolet Blazer LS 4.3L Surge, MIL Lamp on VIN: 1GNDT13W11 The convertor ended up to be the problem we drilled two holes it the pipe before each convetor and check substrate with borescope found front cat melted The most helpfull tip I got was from Gord from British Columbia he suggested to check back pressure at the ... Trouble codes: P0101 (maf out of range), P0404 (egr). |
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| 2001 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GTHK29151 Thanks for the people who took the time to reply. Most of the replies said that I had an air leak in the fuel line between the tank and the pump. This was the case. I did not have the special tools that GM says to use to check this. The way that I found this l... Trouble codes: P0093. |
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| 1990 Oldsmobile Cutlass Cruiser SL 3.3L No Start VIN: 2G3AM84N5L Like i said in my original post on friday i had my powers and grounds , i really did.thats why i beleived the ECM was to blame. No go . I then started checking inputs thinking maybe a sensor is keeping the pump from powering up.As i was poking around with the ... |
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| 1994 Oldsmobile Cutlass Ciera 3.1L Racing Idle VIN: 1G3AG53MXR Well I just gotta thanks all you guys for the quick and useful replies. This one was a real head banger cause nothing seemed to make sense! Found green death on ONE WIRE buried in a perfectly good and dry/taped up harness over top of the tranny. MAN FINALLY!!!... |
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| 1995 Oldsmobile Achieva S 2.3L Hesitation VIN: 1G3NL55D18 Well the fix is in.In doing a back pressure test i removed the o2 sensor and my problem went away.I plugged the sensor in and problem reoccured.I monitored voltage on it but did not see any real problems on the line.I changed the o2 sensor and problem went awa... |
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| 1996 Oldsmobile Cutlass Ciera 3.1L Hesitation VIN: 1G3AJ55M3T sorry for long delay. customer came and got car before we could diagnose further. she did return car and as most replies suspected the air meter was the problem. thanks to everyone. |
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| 1998 Oldsmobile Intrigue 3.8L No Start VIN: 1G3WH52K3W thanks to all who replied after checking car found a bad fuel filter and a clogged air filter now car starts fine thanks to all good techs out there.. Trouble codes: P0172 (fuel trim rich). |
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