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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 14, 2010
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Open Help Requests for GM
Help Request Answers
1992 Cadillac DeVille 4.9L Starting VIN: 1G6CD53B6N
thanks in advance, i have a 92 deville that starts for 2 to 3 seconds then dies, but if you give it 3/4 throttle it will start and stay running quite well actually, it has an aftermarket remote start and had a resistor same as key resistance put in line down b...
2004 Cadillac CTS 3.6L Hesitation VIN: 1G6DM577X4
We have a 2004 cadillac cts that just randomly sets a code 2138 and sometimes seems to run half throttle, if you turn the car off and on the running problem goes away but the light stays on. We have checked 5 volt reference, and grounds, everywhere that we can... Trouble codes: P2138 (Accelerator pedal position sensor 1-2 correlation)
2004 Cadillac CTS 3.2L Clutch VIN: 1G6DM57N54
Clutch has about 3-4 inches of freeplay and engages immediately when releasing. Not a harsh engagement, just starts to apply clutch as soon as pedal comes up from floor. I don't see any adjustments for this hydraulic clutch. Also, i need to replace a leaking s...
1991 Chevrolet K2500 Cheyenne 7.4L Hesitation, Surge, MIL Lamp on VIN: 2GCGK29N0M
This truck is kicking by butt it started out that it bucked badly on light acceleration found faulty rotor bucking is corrected but on wot the pickup just boggs but if you let up it goes fine it will never die out or get worse but no power at wot also truck wi... Trouble codes: 43 (Esc)
1995 Chevrolet Monte Carlo Z34 3.4L Stall VIN: 2C1WX12X9S
vehicle was towed into our shop, customer complains that car will run then die. got vehicle into shop , fired engine and engine will run for approx 15-30 seconds nice and smooth and then shut off like someone turned off the key. cycle ignition and fire back up...
1999 Chevrolet Tahoe 5.7L Cooling Systems VIN: 3GNEK18R1X
Customer brought truck in due to low engine temp and heater blowing cool. We scanned ect and found engine running at 189-194 a little low. Customer has installed 3 t-stats. I installed a factory stat. Still only gets up to about 189-194. Fan felt like it was p...
2003 Chevrolet Impala 3.4L radio VIN: 2G1WF52E63
this car has me stumped when the car is running and you hav the radio on and you turn the defroster on the radeio wont pick up the station have loocked at the antenna looks ok the defroster woorks fine donot see anny shorts in the grid to antenna the white wir...
2005 Chevrolet Cavalier 2.2L Speed Control VIN: 1G1JH12F75
This is going to be a tough one. Cruise cuts out intermittantly. No codes. I've looked at the brake switch input, thinking that a mis-adjusted brake switch may be causing the issue, but to no avail. I wiggled the pedal and the switch, but did not see a change ...
2006 Chevrolet Silverado 2500 HD LT 6.6L Poor Idle Quality, Misfire VIN: 1GCHK23276
Hi every one i have this daramax that runs very poor.i do not know the daramax very well my bal rate for each cyl is #1 -4.7 #2-4.0 #3 12.3 #4 12.0 #5 -2.9 #6 -4.0 #7 2.5 #8 -4.0 at idle it smokes and beraly runs if anybody can help i thankyou and have a good ... Trouble codes: P0303 (Cylinder 3 miss), P0304 (Cylinder 4 miss), P0305 (Cylinder 5 miss), P0300 (Random cylinder miss)
2001 GMC Sierra 1500 SLE 4.3L air bag VIN: 1GTEC14W01
I need to know if some one can tell me how the air bag comes out of this truck i did buy the tool from the Matco tool man today.It looks like there are 2 pins that has to be pushed out at the same time not real sure on this one most of the ones I have taken ou...
2001 Pontiac Grand Am SE 2.4L Starting VIN: 1G2NE12T81
This car will not start it will occasionally start and die or sometimes start and run but wont after shut off and tried to restart. I have replaced the lock cylinder with no change. codes are b2965, b2958, u1000, u1088, u1040
2003 Pontiac Grand Am SE 2.2L No Start VIN: 1G2NE52F63
Car repoed, customer quit paying due to intermitant no start. Car has good fuel pressure and will run fine at times. What I have determined is that in "no start" condition there is no spark or injector pulse. I replaced ign module with "known good" and replace... Trouble codes: 1265 (key buzzer)
2005 Saturn Ion-1 2.2L Clutch Hydralic System VIN: 1G8AF52F75
I'm not sure what model ION I have in here so please forgive me if it isn't an ION 1. A shop put a new slave on this car about three months ago. Last week customer was driving the car when the pedal got hard and the clutch was slipping. A little while later he...

Fixes & Summaries for GM
Fix/Summary Answers
1988 Cadillac Allante 4.1L ABS Brakes VIN: 1G6VR3176J
After replacing the abs computer I can now retrieve codes.I pulled a code 13 which is a plausability code for an internal pressure switch malfunction.I have ordered a rebuilt hydrolic unit.I found a rebuilt unit with a one year warranty for 750.00 .My suspicit...
1979 Chevrolet El Camino 5.7L speedo bullet
i had thought the gear was the problem since everything else was new. ran it and recheck everything looks good! thanks everyone!!!
1991 Chevrolet Caprice 5.0L extended crank ? VIN: 1G1BN53E0M
I ended up putting a new relay,air filter ,and fuel filter on,Owner has been driving it for a week with no complaints.I don't know if there was a problem to start with it starts about the same as the other gm cars with the same system on them , only time will...
1994 Chevrolet G20 Chevy Van 5.7L Hesitation, Cuts out VIN: 1GBEG25K7R
thanks guys for the help. all the ideas where good, but unfortunatley the vehilce still has this problem. i tried everything that was suggested plus more, but no change in condition. this really has me puzzled. thanks again for the help.
1994 Chevrolet K2500 Silverado 6.5L Cruise Control VIN: 2GCFK29S5R
Well, after learning what a Drac is, my next step was to either price one out a replace it if reasonably priced, or to start pulling fuses to see if anything was interfering with it. I explained this to the customer and he decided he was just fine with no crui...
1999 Chevrolet S10 LS 4.3L Atc VIN: 1GCDT19X8X
Unfortunately the customer was not concerned with the 4WD issue since it was working ok. As far as the ABS activation, we could not duplicate the concern and the customer will return when the problem becomes more frequent. Thanks for all that posted suggestio...
2003 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on VIN: 1GCEK19T03
Thank you for the replies. We checked the canister and found a lot of dirt so it was replaced and ran through a drive cycle, passed. So far nothing from the customer so I will wait till Monday and call. Thank you very much for your help and expertise. Trouble codes: P0446 (evap vent circ. malfunction).
2006 Chevrolet Uplander LS 3.5L No Start, Stall VIN: 1GNDV23L86
We are still working on this vehicle. We know that it is not a voltage spike causing the malfunction. We have been using the lab scope and see no upward variation when engine stumbles or dies. The starting system disabled function is an intermittent item that ... Trouble codes: P, 0601 (internal control module memory check sum error.), P, 0606 (PCM Processor Fault), P, 0748 (Pressure control solenoid circuit malfunction open circuit/short to ground or power supply), U, 0107 (Lost comm. with throttle control module).
2003 GMC Yukon XL 1500 SLT 5.3L Accessories VIN: 1GKFK16Z23
Its fixed!!!-finally broke long enough we could track it down today-went to plug in the tech 2 and it would not power up-traced aldl ground to g200 under the dash-this is a main ground for the other systems we were having problems with-found the ground retaine...
1994 Pontiac Grand Am SE 2.3L Cuts out, Stall, Poor Fuel Economy VIN: 1G2NE5533R
Unfortunately the car is not fixed but no more work is going to be performed on it. I did check out the throttle cable and wiring, ended up putting an ECM, it solved the QBD 2 fault, but the iat/ect are still at 304 degrees. Car runs better than before and...
2006 Saturn Ion-2 2.2L MIL Lamp on VIN: 1G8AZ52F95
Unfortunately I couldn't get the customer back with this car before I had to close this help request. I'm sure a cam/crank relearn would have fixed this. I will update this if they ever return. Thanks. Trouble codes: P0300 (Misfire).
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