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Professional Automotive Repair Technical Discussions for April 22, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1986 Buick Electra T-Type 3.8L No Start, Cuts out, Stall VIN: 1G4CF69B8G This unit had intake gasket replaced for coolant leak several months ago. Since has int. stall some times will restart imediatly some times not. I only got it to fail in shop once and had no spark or injector pulses, Suapected ing module, and replaced with kno... |
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| 1998 Buick LeSabre Limited 3.8L heater control VIN: 1G4HR52KXW Hi , I've got a Biuck heater control that reads celius all the time and I cannot figure out how to switch it. I have tried with a snap scanner,no luck,tried disconnecting the battery,I have also tried to find info in the owners manual, alldata,and tried a fax ... |
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| 1988 Chevrolet Cavalier Z24 2.8L Mechanical VIN: 1G1JF31W3J i have a 2.8l cavalier that has very low oil pressure at idle in gear warm,lifters were replaced two weeks ago because of a tick when warm.thats gone but the gauge reads zero and the idiot light comes on at times.motor makes no noise whatsoever.replaced oil pu... |
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| 1989 Chevrolet C1500 Cheyenne 5.7L engine VIN: 1GCDC14KXK this vehicle came in to my shop with two complaints. 1. low oil pressure, and 2. rattle noise similar to lifter rattle. i have replaced the oil pump and screen, which resolved the low oil pressure complaint. then i started by checking the valve adjustment whic... |
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| 1990 Chevrolet Cavalier 3.1L No Start, Cuts out VIN: 1C1JF11T0L see above. |
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| 1995 Chevrolet K2500 Cheyenne 5.7L rear drum brakes VIN: 1GCGK24K2S This should have been an easy one but has been causing me to pull my hair out. Truck came in with a brake pulsation. customer admitted to replacing the shoes himself "some time ago". We checked them and found the rear drums out of round and the r/r shoes on ... |
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| 1995 Chevrolet Camaro Z28 5.7L No Start, Stall, MIL Lamp on VIN: 2G1FP22P6S Car was towed in as a no-start last May. Code 36. sold a new distributor. Inside was severly corroded. Noticed corrosion in harness connector also. Cleaned connector. Car came back with MIL on. Code 36 again. Decided to replace harness due to corrossion. Owner... Trouble codes: 36 (Distributor high reference error) |
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| 1998 Chevrolet K2500 Suburban 7.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GK26J1WG5 OUR SHOP REPLACED VEHICLES ENGINE WITH A AC DELCO REMAN. AFTER REPLACEMENT VEHICLE EXHIBITED MIS FIRE ON #4 AND #7 CONSTANTLY AT IDLE. NO MISS AT CRUISE. AFTER DOING ALL BASIC TESTS, AC DELCO HAD US REPLACE THE ENGINE ANOTHER TIME. NOW THE ENGINE MISSES ON #1 ... Trouble codes: 301 (missfire 1 cylinder) |
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| 2000 Chevrolet Impala LS 3.8L water leak from HVAC blower VIN: 2G1WH55K3Y On a rainy day water will leak from the HVAC blower motor and on to the passenger floor. I have visually check for cracks on the outside of the HVAC unit (where the outer HVAC air filter is located )and none was found. Please help or send me any illustration o... |
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| 1999 GMC Jimmy SL 4.3L Transfer Case VIN: 1GKDT13W7X Hello Group We have this Jimmy with slipping (we think)236 transfer case. lights on all buttons work fine. we can hear transfer case shift with push buttons. Removed battery tray and can see actuator engage. On hoist everything works fine 2wd,4wd 4wdlo 4wd aut... |
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| 1990 Oldsmobile Custom Cruiser 5.0L Electronic VIN: 1G3BP84Y8L Hi people.I have a custom cruiser here that the compressor clutch cycles rapid at idle.All other speeds its normal.I replaced low psi cycle switch+o-tube..vac+charged 2 times with r-12.I did not see a high psi switch.a/c wire at ecm stays hot when a/c is turne... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1997 Cadillac DeVille 4.6L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G6KD54Y7V Well it's not fixed but I do know what is wrong with it and what may be wrong with it. What's wrong, blown head gasket. I got 600 ppm HC in the coolant with the KOEO. What maybe wrong ? Valve stem seals or guides on #2 cyl. That cylinder had liquid oil on ... Trouble codes: P0300 (Random Misfire), P1376 (Ignition Ground Circuit), P0302 (Cylinder 2 Misfire). |
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| 1994 Chevrolet Lumina APV 3.1L Misfire VIN: 1GNDU06DXR We ended up pulling off the intake manifold and found a broken gasket at the #1 intake port. Thanks to some of you for the help. |
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| 1995 Chevrolet Tahoe LS 5.7L no up shift to 3rd VIN: 1GNEK13K5S i repl. the p/n switch and harness trans shifts ok thanks |
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| 1995 Chevrolet C2500 Cheyenne 5.7L Stall VIN: 1GCGC29K8S Thanks for all who help, checking the p/u coil was a very heplful hint concerning the A/C Voltage. Also thanks for the advise on ABS system. Everything thing i check was O.K., and the customer was going to bring it back for more diagnoises, but he just notifie... |
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| 1996 Chevrolet Blazer 4.3L Excessive Emissions, No Start VIN: 1GNDT13W7T after playing around with this enough finally figured out was blowing fuse when shifting into reverse and engine would torque. so started looking closely at wiring found harness that goes back to fuel pump had been hitting left exhaust manifold flange when eng... |
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| 1998 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W5W thanks to all who helped. brian from idaho; bobby from virginia; brian form north carolina; tom form missouri & tulio [...] from calif. Brett from kansas was the the one with a perfect match the carbon can was full of dirt it was 1.25lb too heavy. I guess these... Trouble codes: P0446. |
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| 1999 Chevrolet Blazer 4.3L Cuts out, Stall VIN: 1GNDT13W3X This Blazer still continues to defy us. The suggestions we received included the EGR valve not closing due to deposits. This suggestion did not match our symptoms but it is a frequent cause of poor idle and stalling. Another suggestion referred to ignition swi... |
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| 1999 Chevrolet Tahoe 5.7L Misfire, MIL Lamp on VIN: 1GNECI3R6X As Phil [...] replied, this injection system is warrantied for 100,00 miles, therefore with this information the customer chose to try a local dealer. John [...] stated that a cap and rotor might be of help, but I was unable to try that as the vehicle ... Trouble codes: P0300 (Random/ Multiple Misfire). |
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| 1999 Chevrolet Venture 3.4L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GNDX03E6X thanks to all your replies, the problem was the coolant was low. it seems that even with the temp sensor reading a good temp on data stream and the guage below half on the dash the collant was low. filled radiator and runs fine. probably bad intake gasket. oh ... Trouble codes: P0300. |
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| 2000 Chevrolet Impala 3.8L fuel gauge VIN: 2G1WF55K9Y Thank you for all that responded to our request for assistance. This vehicle was repaired with relatively little time as a result of the quick responses to our request for help. Originally, this vehicle came in with fuel gauge stuck on full and we used a scan ... |
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| 1998 Geo PRIZM 1.5L headlights VIN: 1Y1SK5286W finally found culprit for no start, prizm unless park lights were on . turned out to be a corroded ground busse assembly way up under left front upper kick panel it was very difficult to get at and all terminals were corroded causing no ground & back feeding t... |
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| 1992 GMC K1500 Sierra 5.7L Poor Idle Quality, Hesitation, Poor Fuel Economy VIN: 1GTEK14KXN To fix the volt meter and temperature gauge fluxuation, we have recommended that the customer replace the instrument panel. Through process of elimiation, which included checking a common problem of a poor ground on the driver's side under the dash and all oth... |
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| 1984 Other GM R-600 RV 454CID Broken push rods VIN: IRF110312E Thanks to everyone who replied. It was bad gas that was causing so [...] trouble. Never would've thought it would go to that extent of damage but there's a first time for everything. I told owner that he needs to run some cleaner in fuel and drive this beast at... |
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| 1990 Pontiac Bonneville SE 3.8L Misfire VIN: 1GZHX51C6L Thanks for all the responses on this problem which was caused by the customer installed crank sensor. I dont know why it didnt show on my lab scope.When the car was failing I sprayed on the crank sensor with water and the miss went away so I replaced the senso... |
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| 2000 Pontiac Grand Prix SE 3.1L speedometer and odometer VIN: 1G2WJ52J7Y Hi techs - sorry about the late post, but this job was back-burnered by the body shop since the insurance Co. needed to send an adjuster to verify the problem. The 3 replies suggested replacing the entire wiring harness, checking for DTC's (none found), chec... |
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| 1997 Saturn SL2 1.9L No Start VIN: 1G8ZK5276V Thanks to you who responded, it ended up being the neutral safety switch. The problem never acted up for us, so with customer approval we replaced it for testing purposes. Customer has reported back that all is ok and he is very happy. Thank You All Jay |
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