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Professional Automotive Repair Technical Discussions for May 2, 2008 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2000 Cadillac Eldorado ESC 4.6L Mechanical VIN: 1G6EL12Y2Y HAPPY FRIDAY! This Cadillac has a noise when it is revved up.It does not make the noise at idle. It sounds like a bird chirping,(high pitched) it resonates throughout. It still makes the noise when both belts are removed. With a stethoscope it sounds louder wh... |
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| 1995 Chevrolet Astro 4.3L 1st/4th VIN: 1GBDM19W85 I was contracted to install a shift kit by another location. I did not have the opportunity to drive before hand but was told there were no problems. The owner towed and wanted a little better shift. After I began the modifications I was informed that there MA... |
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| 1998 Chevrolet C2500 Cheyenne 5.7L No Start VIN: 1GCGC24R1W Thanks in abvance for any abvice on this one guys. When this truck does not start it has spark and fuel presure but ethier no injector pulse or very erattic pulse. I have good signal from the crank sensor and the secureity light never has flashed or stayed on ... |
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| 2003 Chevrolet Corvette Z06 5.7L SDM Module VIN: 1G1YY12S93 SDM module has been replaced. Sets code B1001 and light flashes continually. Per document ID #1862423 have tried repetedly to configure BCM RPO codes per vehicle. Everytime ateempted I end up with TWO HVAC system RPO codes in the BCM. I have follwed instructio... |
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| 2004 Chevrolet Colorado LS 3.5L Misfire, MIL Lamp on VIN: 1GCDT13624 swapped coils ,new spark plugs no change smooths out above idle, compression the same on all cylinders injector almost impossible to get but it is clicking like the others, no vaccum leaks found must be a common problem because we have another truck with the s... Trouble codes: P0300 |
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| 1995 GMC C1500 Sierra SL 5.0L Long, Extended Crank VIN: 1GTEC14H1S Vehicle came in from another shop with Long crank symptom. All parts previously replaced except for Fuel pressure regulator. We found regulator diaphragm ruptured confident it would fix the problem.No such luck. Vehicle will start every time but sometimes cran... |
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| 2001 GMC Sierra 1500 SL 5.3L 2-3 shift VIN: 1GTEK19T31 Vehicle hangs up in 2nd, This is the part that has me baffled, On a test drive at about 1/4 throttle vehicle does not shift into 3rd, RPMs go up and there is nothing there basically, but if you manually select 2nd and get the vehicle above about 50 MPH and the... |
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| 1998 Oldsmobile Intrigue GL 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3WS52K4W hey all. my son has a 98 intrigue 3.8. at idle the misfire counter starts rapidly counting. at about 1500 rpms the misfires stop. runs great on the highway. not good at idle. the engine was replaced about 3000 miles ago with a 50k mile used part. ran great unt... Trouble codes: P0300, P0304, P0303 |
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| 2001 Oldsmobile Silhouette Premiere 3.4L No Start, Cuts out, Stall VIN: 1GHDX13E41 ok fellow techs i have my nightmare vehicle back it is summer time here in arizona and every year this vehicle come back with a stalling problem, i have replace just about ever sensor possible and this vehicle still stalls out. i intermittantly loose injector ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1995 Buick LeSabre Custom 3.8L volt light Well THANKS FOR THE RESPONSES. YOU CAN NOT CHECK THE "L" TERMINAL W/ A TEST LIGHT,PULLS TO GROUND AND ALT. WONT CHARGE. BACKED PROBED W/ VANTAGE PRO AND HAD 12.27VOLTS W/CAR RUNNING. REPLACED TERMINAL IN CONNECTOR AND PROBLEM SOLVED. THANKS AGAIN |
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| 1999 Buick LeSabre Custom 3.8L Stall VIN: 1G4HP52K6X Thanks fo all the help! I double checked eveything again. Got the PCM reflashed, still same problem. Started to recheck everything again... Pulled off the vacuume hose from the regulator for the ?? time and found fuel. Replaced the regulator and PCV and now it... |
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| 1993 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEC19K8P thanks to Alex from Georgia,John from Maryland,Clint from Washington,Caleb from Oregon,and Greg from Indiana. yes i have continuity from DLC to ECM,no shorts to ground or volt.all power and grounds are good at ECM and ALDL conector. I tried 3 differnt scanne... |
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| 1999 Chevrolet Blazer 4.3L tcc VIN: 1GNDT13W6X RECIEVED ALOT OF GOOD INFORMATION CONCERNING TCC SYSTEM, CIRCUT 1020 POWER CIRCUT WAS GOOD, NEVER HAD A POWER LOSE TO SOLINOIDS. THE PROBLEM ENDED UP BEING THE VCM, WHICH WAS NOT SENDING A GROUND SIGNAL TO THE SOLINOID. FOUND ON MANUAL ACTIVATION OF TCC THE SC... |
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| 1999 Chevrolet Blazer 4.3L Hesitation, Cuts out VIN: 1GNCT18W3X I do not Know how many times I here check the basics and every once in a while I go on a wild goose chase. The Problem turned out to be a bad loose ground, G402 at the rear of the vehicle. I did pull on wires and never was able to get the rig to act up. Plus t... |
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| 2006 Chevrolet Colorado LT 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCDT13626 Thank you gentlemen so much for all the quick replies! Each and every one of you were correct with the valve seat prognosis. Sent him to the dealer and they were able to help w/ warranty. I charged a small diagnose fee and all is happy. Thank you all again for... |
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| 1988 Oldsmobile Delta 88 Royale 3.8L No Start VIN: 1G3HN54C8J This beast if fixed. It's been two weeks since replacing the ICM & Coil and still running. Roy from Pennsylvania, Chris from New Jersey & Pat from British Columbia all suggested the ICM was overloading the coil pack and burning it out. I haven't been able t... |
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| 1995 Oldsmobile 88 Royale 3.8L MIL Lamp on And the winner goes to . . . Replace PCM!!! (cheering) The two who guessed right, Chester and Joe, get my gratitude. Sorry Michael, that ground at the LH sill was in good shape for me, though interesting. I'll have to remember that one. I'm also glad for p... |
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| 1999 Oldsmobile Intrigue GLS 3.5L parking brake VIN: 1G3WX52H3X the rotor/drum assembly was to small, got another and it's fixed. thanks, mh |
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| 1998 Pontiac Grand Prix SE 3.8L abs VIN: 1G2WP2K5WF customer did not want to go furthur with diag. at this time. thanks to everyone who replied. |
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| 2004 Saturn Ion-1 2.2L clutch hydraulics VIN: 1G8AF52F64 thanx for all the replies, everyone was helpful and after a half dozen tries we got all the air out, very poor design in my opinion thanx again as usual iatn rocks!!! |
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