 Prev |
Professional Automotive Repair Technical Discussions for February 20, 2004 International Automotive Technicians' Network (iATN) - Members Only |
Next  |
| (Also Available: All, Asian, Chrysler, European, Ford, GM.) | ||
| Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder. | ||
Open Help Requests for GM
| Help Request | Answers | |
| 1994 Buick Park Avenue Ultra 3.8L Poor Idle Quality VIN: 1G4CU5212R This thing will vibrate like crazy at idle. Come off and purrs like a kitten. I have no dead or low cylinders. It has done this ever since the engine was replaced with a used one about 8 months ago. Runs great off idle, and does not stall. Idles about 800 rpm.... |
View | |
| 1998 Buick LeSabre Limited 3.8L Upper Intake Manifold VIN: 1G4HR52K8W Vehicled towed in today...Customer turned the key and BANG!!, upper intake manifold exploded...looks like the back half (firewall side) just blew up. I am starting to investigate this, but I am asking for feed-back. I have never seen anything like this before. |
View | |
| 1990 Cadillac Seville 4.5L No Start, Cuts out, Stall VIN: 1G6KS5335L car came in with complaint of dies after hot and will not start for 5 min. I drove for about 30 min. and made it back to the shop before it died. It would not start so I removed exhaust pipe from mainfolds. car started so we had a cat put on it. the gs did not... Trouble codes: 74 (mat interupted) |
View | |
| 1995 Cadillac DeVille 4.9L air conditioning VIN: 1G6KD52B3S last summer we had to completely restore the a/c system. since then the system worked fine until december of 03. when the engine seized. we install the new engine and cannot get the system to charge and the fuel gaugeis in operative. customer insistes this is ... |
View | |
| 1995 Chevrolet K1500 Cheyenne 6.5L ABS Hydraulic Assembly/Combination Valve VIN: 2GCEK19S6S I have this truck with a low brake pedal. It has the Hydro Boost system. The customer replaced the master cylinder two weeks ago, because he lost his brakes completely while at a job site. He never bled the system, just the master cylinder itself. His problem ... |
View | |
| 1996 Chevrolet Blazer 4.3L MIL Lamp on VIN: 1GNDT13W5T when i started the vehicle cold it seemed to me that the fan clutch was already engaged, like it was 90 degrees out. could this cause the ect to set this code and then block to correct. if the customer replaced the thermostat because of fan clutch problem i'm ... Trouble codes: P0171 (lean bank 1s1) |
View | |
| 1996 Chevrolet K1500 Suburban 5.7L Misfire, MIL Lamp on VIN: 1GKFK16R8T wE HAVE DRIVEN VEHICLE AND WE ARE ABLE TO DUPLICATE THE MISFIRE. WHILE WATCHING THE SCANNER AND WHILE ACCELERATING ENGINE HAD MISFIRES ON ALL CYLINDERS AND IT SEEMED LIKE THE ENGINE CUT OUT COMPLETELY FOR A SECOND. THEN IT WENT AWAY, BUT THEN HAD MISFIRES AGAI... Trouble codes: P0300 (random misfire) |
View | |
| 1998 Chevrolet Prizm 1.8L ignition lock VIN: 1Y1SK5288W the ignition key will not go to lock. this occurs intermittently sometimes if the car sets for some time the inginition will go into the lock position so the key can be removed. we pulled the ignition lock cylinder, it works fine. we lubricated the system set ... |
View | |
| 1999 Chevrolet Express 1500 5.7L Brakes VIN: 1GBFG15R7X We have a strange one here. This van was brought to us for an inspection and possible brake service. The front pads were replaced with Delco pads, the rotors turned and bearings packed. Nothing strange was noted about the job. The customer reurned the next d... |
View | |
| 2001 Chevrolet Impala 3.4L cooling fans VIN: 2G1WF52E61 this is for all you gm techs. please tell me what i am over looking, here it is. vehicle came in with overheating problem. customer has been to another shop twice and still same problem, they didn't repair the overheating. some hoses and gaskets were replaced ... |
View | |
| 2000 GMC Jimmy Diamond Edition 4.3L MIL Lamp on VIN: 1GKDT13W0Y Vehicle has had a problem with blowing the 30 amp fuse by the battery.The air pump was replaced-everything was ok for 3 months.Then the fuse was blown-replaced fuse then 1 week later fuse blown again.Pulled air pump found alot of water in pump.blew out lines-r... Trouble codes: P0410 |
View | |
| 1991 Pontiac Firebird 3.1L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: 1G2FS23T5M Need help on this one. This should be easy. 1991. customer came in for rough idle. check out and found emissions very high, 8% co. check fuel pressure, in spec. check fuel regulator vacuum line,no fuel. computer was very hot to the touch so I replaced it with ... Trouble codes: 45 (rich condition) |
View | |
| 1997 Saturn SW2 1.9L No Start, Poor Idle Quality VIN: 1G8ZK8271V hello out there in car land-i have this saturn in our shop that will drive down the road at 1,500 rpms and 30mph with out having your foot on the gas pedal-also when you put it in park the rpms go to 3,000 and gradually go down to only 1,200 rpms-when sitting ... Trouble codes: P1624 (pcm ram performance), P0507 (idle control system rpm hi) |
View |
Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1981 Cadillac Fleetwood 6.0L charging system VIN: 1G6AB698B9 thanks to all who applied! we replaced all 4 belts and rechecked charging system-- all is well at both idle and acclerating. |
8 | |
| 1986 Chevrolet Corvette 5.7L Left Front Caliper VIN: 1G1YY0788G This vehicle is not repaired but is back on the road. I appreciate all the responses I received, but all were not of any real help. I do follow the IATN procedure of not asking for help unless I have exhausted all professional attempts to solve this problem. A... |
21 | |
| 1988 Chevrolet G30 Beauville 5.7L No Start, MIL Lamp on VIN: 1GAFG35K9J thank you to all who replied to this ad, this problem turned out to be a defective coolant temp sensor i assumed that since it was new ,it was good never again!! Tahnks again to the techs that replied i appreciate it very much darrin Trouble codes: 15 (coolant temp). |
18 | |
| 1993 Chevrolet Lumina Euro 3.1L cooling system VIN: 2G1WN54T1P The customer declined to fix the car. She is probably going to trade it off. Thanks to all that responded . Also after checking further it appeared to be the intake leaking internally. Thanks iATN members |
21 | |
| 1995 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W7S got vechile acting up long enough to confirm 12 volts on white wire for ign module to pcm . replaced ign module and all is fine Trouble codes: 1351 (ref voltage high). |
7 | |
| 1996 Chevrolet K1500 5.7L Lifter VIN: 1GCEK14R7T Most of you confirmed that the problem was probably a lifter so we went ahead and changed the offending unit, and still had the same noise. At this time we noticed that there seemed to be what sounded like an exhaust leak when it was running with the valve cov... |
7 | |
| 1997 Chevrolet Blazer 4.3L gauges fuse VIN: 1GNDT13W2V Hi group! This truck is fixed. This was towed in and once we moved the truck we could hear the front diff engauged. The solenoid was shorted and was not present on my wiring diagram. Once disconnected system works great, however front diff is still engauged. T... |
2 | |
| 1998 Chevrolet Corvette 5.7L windows, keyless entry, all gauges, no data from s Thanks guys for the additional help you sent. I have found that the seat control module was grounding the main serial data wire, and therefore created the domino effect. That's why there was no communication with any of the modules, and so many problems were p... |
3 | |
| 2000 Chevrolet Corvette 5.7L backfire VIN: 1G1YY32G2Y we replaced maf sensor and air filter box, and the car has run fine for the last few weeks. the root cause of the backfire was never found,its possible the driver habits or a fluke occurance.. |
5 | |
| 2001 Chevrolet Astro 4.3L Hesitation, Surge VIN: 1GCDM19W01 Thanks to those that responded. Many said to check fuel system: injectors for restriction or bad fuel pumps. Also one reply said to look at the cam retard on the distributor, and check convertor for restrictions. Currently: *** Van is at a dealer and they ar... Trouble codes: 300 (random misfire). |
6 | |
| 2001 Chevrolet Express 3500 5.7L ping under load VIN: 1GCHG39R41 As I mentioned before, this is a truck mounted carpet cleaning system. We found that the driveshaft from the engine back to the cleaning unit (it is belt driven with an AC style clutch) had loose u-joints. At certain engine speeds, it sounded JUST like a terri... |
3 | |
| 1999 GMC Sierra 1500 SL 4.8L Engine oil contaminated VIN: 1GTEK14VXX I'm sorry it took me so long to close this request, but I was hopeing to find time to fully evaluate this core. Customer decided that a junkyard motor was the way to go, so we got him one and installed it. He is happy and gone but i kept the core hopeing to pu... |
12 | |
| 1986 Oldsmobile Cutlass Ciera LS 2.5L Stall VIN: 2G3AJ19RXG Victory on an old dog!! I've had some excellent repies regarding this one, like: bad injector, low fuel pressure, worn engine, bad ecm grounding, and incorrect tps voltage. Turns out, the iac passage was blocked with carbon. After a minor cleaning and a cruise... |
17 |
