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Professional Automotive Repair Technical Discussions for April 5, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1994 Cadillac DeVille 4.6L Engine Block VIN: 1G6KF2Y0RU Customer complaint of small coolant leak. With pressure on the cooling system, leak is a small crack in the block. It is located on the rear side of block about 1-2 in. above the pan flange and 3-4 in. from rt. end. Runs across an unused bolt boss just ahead o... |
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| 1987 Chevrolet G10 Chevy Van 5.0L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 2GCCG15H8H Hey guys, starting to pull hair on this one. Vehicle sat for approximately one year after engine was replaced, ran great before that. Client says if extended crank time occurs it will act up, Will stick on high idle when cold and runs great, until 2 or 3 block... |
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| 1989 Chevrolet Cavalier 2.0L Poor Fuel Economy, MIL Lamp on VIN: 1G1JC1117K when cold start up on a cool morning, engine loads up with too much fuel. after it goes to closed loop the check engine light comes on with code 45. So this tells me the oxygen sensor is doing its job. Is it possible that the coolant sensor is out of range? I ... Trouble codes: 45 (rich exhaust) |
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| 1993 Chevrolet K1500 Cheyenne 5.7L blower motor and brake lites VIN: 2GCEK19R2K bizzare wiring problem. with the key on the brake lites are inop on application,. the heater motor comes on when the brakes are applied.with no brake lites. when the key is out the brake lites work,but the heater motor come on.when the 4x4 is shifted the heate... |
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| 1995 Chevrolet Lumina APV 3.8L Stall VIN: 1GNDU06L4S Vehicle will stall intermittantly. It will run for an hour and then just stall in the shop. It always starts right back up normally. Sometimes it will stall again right away, start up and run fine for hours. No codes stored. Checked engine grounds, ok. Cleaned... |
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| 1997 Chevrolet K1500 Suburban LS 5.7L MIL Lamp on VIN: 1GNFK16R2V Hi guys, I have 2 Suburbans like this bugging me at the same time. Both have the same symptoms. The front O2 sensors read fine but on cruise one or both of the after cat O2 sensors are overactive. I can see that the cats are not doing a complete job but why? I... Trouble codes: P0430 (Cat Efficiency) |
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| 2001 Chevrolet Cavalier 2.2L Convertor VIN: 1G1JC52481 Hello group, I have this chevy cavalier in the shop for a p1870 trans componant slipping. I do not seem able to recreate the problem but when the cust takes the car the light will come back on when at highway speeds. The freeze frame shows it happens at 60 mph... |
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| 2001 Chevrolet Express 3500 8.1L rear brake shoes VIN: 1GBJG31G31 i have a problem with the rear brake shoe's wearing out in 6'000 miles its primarily the rear shoe i have 5 of these vehicle's and they are all doing the same thing i removed the emergency levers to keep the emergency brake from working but it makes no differe... |
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| 1991 GMC K2500 Sierra SLE 5.7L 2-3&3-4 shifts VIN: 1GTGK24KOM this trans came to me comp. inop. direct clutch burned, direct clutch piston broken in two, rear band burned, and front band slightly burned.went through and replaced all frictions, steels, bands, piston seals & sealing rings. Re-assemble & install only to hav... |
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| 1993 GMC C6000 6.0L No Start VIN: 1GDE6H1P9P This truck happens to be a U-Haul 26ft. Truck towed into shop with blown motor. swap motor with rebuild unit. Crank up new motor-No start. Fuel pressure is fine. Fuses ok. No spark, no pulse. Snap on MT 2500 wont communicate. Shopkey dont even list this monste... |
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| 2002 Oldsmobile Alero GL 3.4L front hub, drive axle, transaxle, wheel, tire VIN: 1G3NL52E52 The noise is a low pitched squeak, whirling noise that is barely audible with wheel revolutions at speeds lower than say 5MPH. Is not affected by brake application. Frequency affected by steering angle. Have connected chassis ear and noise is most prevalent ne... |
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| 1996 Pontiac Sunfire SE 2.2L Starting VIN: 1G2JB1243T No start sometimes customer says when it rains it probably will not start. We soaked everything w/ water but always starts, coincidence?? Found problem to be in anti theft system either lock cylinder, instrument panel or ecm. Checked archives and found one who... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1989 Chevrolet K1500 Cheyenne 5.7L abs VIN: 1GCEK19W1W who would have thought GM did not incorpoate the sensor with the bearing on this truck.cleaned sensor mounting and so far no problems.thanks to all for responding. |
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| 1994 Chevrolet K1500 Suburban Silverado 5.7L cooling VIN: 1GNFK16K1R thanks to all the techs who emailed me with ideas and suggestions on this vehicle. took a couple's advice and pulled heater hose off rear of intake and no coolant flow. replaced NEW water pump again (#3),(not o'reillys brand) and coolant flowed from hose!!! re... |
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| 1995 Chevrolet K2500 6.5L No Start, Cuts out, Stall VIN: 1GCGK29F6S Unfortunately I have not repaired this vehicle. Customer has not decided if he wants to repair it or try to get rid of it. The stalling has gotten much worse which should make it easier to diagnose if he returns. I recieved some good advice. The majority said ... Trouble codes: 36 (Pulsewidth too long), 35 (Pulsewidth too short). |
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| 1996 Chevrolet S10 2.2L Poor Idle Quality, Hesitation VIN: 1GCCS1440T Many thanks to my several responders. Everyone was on the same track- the cam shaft. Evidently this is a known weak spot in this motor with updated parts available. This cam tensioner had broken and the gear had jumped four teeth. Tim @netzero told us that on ... |
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| 1996 Chevrolet S10 2.2L drive shaft VIN: 1GCCS144XT HI ALL I WOULD LIKE TO THANK ALL 18 REPLIERS aND YES IT WAS A BAD U JOINT . NOISE WAS TRAVELING DOWN THE DRIVE SHAFT. VERY SIMPLE FIX. THANKS FOR THE SUGGESTIONS. |
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| 2000 Chevrolet Silverado 1500 4.8L fuelgage/tach/trans VIN: 2GCEC19V0Y dear techs thanks for your input, it was the ignition switch, replaced it & programed it. problen solved thank again |
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| 1999 GMC K3500 Sierra SL 7.4L abs VIN: 1GDJK34J7X Hi there guys, Well many of you hit the nail squarely on the head! There indeed was rust buildup on the wheel sensor mounting surface. We thoroughly cleaned that area and wala... the problem disappeared! Thanks to all that replied! |
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| 1991 Pontiac Grand Am LE 2.5L orifice tube VIN: 1G2NE14U3M Thanks to all who respnded,found orifice tube in line behind lower splash panel.Customer coming in next week to have work done. Gene |
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| 1996 Pontiac Bonneville SE 3.8L Climate Controls VIN: 1G2HX52K8T This vehicle had two problems within the same system. First the Electronic Climate Control module, which controls the vacuum actuators and electric blend door actuator, was not routing vacuum to the vacuum motors to control the air flow. Replaced this item and... |
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