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Prev Professional Automotive Repair Technical Discussions for June 30, 2008
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L Hesitation, Cuts out, Stall VIN: 1G4HP52L6S
Hell all and thank you in advance. Here is my problem child (or wife) This buick has dying problem. Some days it will run all day and others will dye often. things that have been done, Cam and crank sensor have been replace and that fixed my cam/crank error in...
1999 Buick Riviera 3.8L Stall VIN: 1G4GD221XX
The vehicle came in with an intermittent stall problem. This only happens when in a deceleration mode and when shifting into reverse at idle. The engine will stall and restart immediately with no load in park or neutral. When at idle the vehicle will stall in ...
2000 Cadillac DeVille 4.6L Left rear power window and door lock VIN: 1G6KD54Y8Y
Bit of a strange one I think. Left rear door lock and power window inoperative. Found orange power wire to left rear door module broken at hinge area. Repaired wire. Now has power to door module, but does not operate window OR door lock. Does not operate from ...
1957 Chevrolet corvette 283CID slip yoke VIN: 1234657891
I'm helping to put this car together after someone else took it apart. My specific question is should there be a snap ring on the transmission output shaft? This is a 4 speed and the driveshaft did't have a slip yoke on it when I got it. Went to my local drive...
1995 Chevrolet Blazer 4.3L battery VIN: 1GNDT13W8S
This truck is my own personal vehicle ,when it hapon i were driveing down the rode and all the gauge on my dash start jumping like crazey , and i heard a low hum comeing from the altanator and it haven charged sens. THINK YOU JAMES,.
1998 Chevrolet S10 2.2L speedometer VIN: 1GCCS1449W
the one has been all over town. the vehicle came in with the speedo inop. we found the radio fuse missing, after we installed a radio fuse the speedometer works but the odometer will not light up. customer said that it did before the speedo stopped working. (h...
2000 Chevrolet Suburban 1500 LT 5.3L Mechanical VIN: 3GNFK16T4Y
2000 Chevrolet S10 2.2L Unknown VIN: 1GCCS1453Y
This one has really got me going. The problem is an intermittent no shift from 2nd to 3rd. It seems to only happen at WOT, the shift is commanded by PCM according to the scanner, and monitoring the 2-3 solenoid circuit with a test light shows the solenoid turn...
2002 Chevrolet Tahoe LS 5.3L Rear A/C VIN: 1GNEK13Z22
I got no cooling from the rear a/c unit. I replaced the compressor due to internal failure. Now the rear a/c is blowing warm. The system is full and the pressures look fine. The front unit is very cold. I have had 2 of theses trucks in a row do the samething. ...
2002 Chevrolet Trailblazer LS 4.2L low power VIN: 1GNDT13S82
Thanks for reading. This thing has low power all the time, in fact, it wont go over 4K RPM and it takes it's time getting there. Low power during drive,But durring the CKP relearn it will go higher. Trims and O-2's are actually real good,+- 3-4. No codes, peri...
2004 Chevrolet Trailblazer EXT LS 4.2L MIL Lamp on VIN: 1GNES16S14
hi all, a honda guy here with this chevy trailblazer(friends).this thing keeps throwing the p0128 code for the ect. i have checked the sensor several times and it has always been in spec,the radiator is always full, the coolant looks to be clear and good, reco... Trouble codes: P0128
2007 Chevrolet Uplander 3.9L Rear Suspension VIN: 1GBDV13187
On slightest bumps rear suspension slams. Sounds like it's bottoming out but it is not. Only happens moving forward. Sounds like noise might be occurring after the bump when suspension rebounds. Has automatic leveling but it all appears to be working correctly...
2003 GMC Sierra 2500 HD SLE 6.6L No Start VIN: 1GTHC23133
this truck was first brought in for a extended cranking problem. we found the fuel filter and oil change were over due so we did that. we also found a bad air filter due to a rat or something. the service seemed to fix the problem. the problem came back after ...
1996 Oldsmobile Cutlass Supreme SL 3.1L evap purge solenoid VIN: 1G3WH52M4T
car is now coming back for 3rd time . burned up original solenoid . replaced with new gm. lasted 4 weeks. light on again. replaced with another gm solenoid last week. lasted 3 days and solenoid will not click again.all previous checks and smoke tests checked o...
2001 Oldsmobile Alero GL 3.4L MIL Lamp on VIN: 1G3NL52EX1
This problem also occurs on most other GM vehicles for me . When I go to pressure test this vehicles evap system , I tap into the system at the underhood connector( with the green cap)and I do take the shroeder valve out to test. I use the MAC evap smoke/pre... Trouble codes: P0440
2001 Pontiac Grand Am SE 3.4L Suspension VIN: 1G2NF12E21
well just got this veh. in and it has a poping noise in frontend when turning wheel when i'm in a bink checked balljoints seem to find no play. also checked swaybar bushings.. any suggestions. also the car is idling about 2200 rpms hook otc scanner to it and n...
2005 Pontiac Sunfire 2.2L aftermkt. cruise cont. VIN: 3G2JB12F35
customer requested we install audiovox after market cruise control, i said sure...? the instructions call to tap into the coil negative wire for tach ref. this thing is set up like a quad 4. all coils are solid state and only wiring is to the icm. any one have...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Cadillac Fleetwood 5.7L automatic hvac VIN: 1G6DN5278P
i finally was able to get this vehicle back in my hands to complete the diag. once i got the codes out of the hvac controller, the problem was the blower motor. thanks for the help from chester and steve(thanks for the call).my disabled neighbor can now go for...
1995 Chevrolet Blazer 4.3L Hesitation, Surge, Stall VIN: 1GNCS13W8S
Thanks to everyone that replied!! I got a lot of ideas from the help that was given. After checking all the things that were recomended, I installed a new ECM. That fixed it! runs like a top. I watched the data stream and I don't see any changes in what I saw ...
1995 Chevrolet K1500 Suburban 5.7L Hesitation, Cuts out VIN: 1GNFK16K4S
thanks for the replys. pulled off egr was fine removed throttle body spring was ok Vacumn passage to map sensor was not plugged throttle body gasket slightly distorted replaced gasket. still ran poor. reconnected fuel psi guage. started at 12 psi and grad...
1999 Chevrolet C1500 Suburban 5.7L compressor VIN: 3GNPK16R4X
Thanks for the help. I realized my stuipid mistake about the lines, I knew which was which just screwed up, i appreciate the corrections though.Either way customer decided to trade it in so we had no more opportunities to work on it. Thanks again for attemting...
2000 Chevrolet C3500 6.5L brake pedal VIN: 1GBJK34F2Y
replaced hydro booster fixed problem thanks for your replies.
2005 Chevrolet Lumina 3.6L Eng oil in cooling system VIN: 6G1ZK52B65
This one is fixed. Eddie, Curtis, Reggie hit it on the nose with a block problem. We double checked by putting plastic between the heads and block (engine out) and pressureized the oil circuit and again it leaked oil into the coolant system. The customer broug...
1996 GMC C3500 Sierra SL 6.5L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GDJC34F6T
We sent the truck to the dealership some time ago, and they seem to think it's the injection pump, but no decision has been made by the owner, so the truck is still sitting at the dealership. A number of replies also said the problem is probably in the pump. ... Trouble codes: P0216 (Injection timing congrol circuit), P1214 (Injection Pump Timing Offsett).
2003 Pontiac Grand Am SE 3.4L Engine VIN: 1G2NF52E13
As stated in previous post, car would at times (intermittant) crank, no start. No injector pulse. Repeatedly set knock sensor fault after engine replacement (used) . Could not get crankshaft relearn proceedure to finish or complete. Suspect info of where ...
2003 Saturn Ion-3 2.2L Misfire VIN: 1G8AK52FX3
Hi and thanks to tecs with suggestions for this repair. Ordered and installed Saturn factory AC spark plug. Customer agreed to run for a day and report. Showed up Wednesday after noon, with MIL light on. Scanned and P0300 back, very intermittent, using Modis o... Trouble codes: P0300 (random miss fire).
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