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Prev Professional Automotive Repair Technical Discussions for October 31, 2005
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Open Help Requests for GM
Help Request Answers
1988 Buick Skyhawk Custom 2.0L wheel VIN: 1GCDT14ZR8
This 88 skyhawk is my mom's. On a cold start steering refuses to turn until its warm. I don't think its the PS pump, nut maybe a check valve???/? Help, Id there a check valve? Where is it located? Where can I buy the part? Thanks!!!
1994 Buick LeSabre Custom 3.8L No Start, Stall VIN: 1G4HR52LXR
car came in complaint was intermit no start. car was running when i got it. i checked wave pattern on fuel pump/ not good so i replaced pump thinking this was intermit problem. now it cranks & runs about 10 secs. & dies. so had crank, cam sensors, & icm in sto...
1991 Cadillac Eldorado 4.9L CCR system VIN: 1G6EL13BOM
This car came in for checking the warning message saying " Service CCR system " at the information center. I do not know the meaning. When I press the off and warm buttons, there is no ecm codes as well as bcm codes. The input and output data seems normal and ...
1994 Cadillac DeVille 4.9L battery VIN: 1G6KD52B6R
car came in for no start due to dead battery.replaced battery no draw checked at various times .started car to drive out car kept running with key in the off position.thought this is a no brainer,replaced ignition switch same thing .the next start back to norm...
1997 Cadillac Seville SLS 4.6L speedo, tach, prndl illumination, temp guage, tcs VIN: 1G6KS52YCV
Hello, pull up a seat and read on if you have the time. This car has had problems with the battery going dead overnight from time to time and I have never been able to duplicate a drain using the proper test methods of never opening the circuit by using a drai...
1989 Chevrolet S10 Blazer Sport 4.3L low pedal VIN: 1GNCT18Z1K
Over the weekend customer lost firm pedal and the brake light came on on the dash. This vehicle does NOT have anti-lock brakes. We have inspected the complete hydraulic system for leaks and have not found anything amiss. Fluid in master cylinder is real dark, ...
1994 Chevrolet S10 4.3L electrolisis VIN: 1GCDT14Z7R
Replaced s-10 heater core, yuk 10 hours, but checking for voltaged with digital voltmeter shows more voltaged in coolant than is acceptable. Test is,neg lead to bat terminal, positive lead in radiator neck. Should not read more than .1 v. I'm reading close to ...
1995 Chevrolet K1500 5.7L Surge VIN: 2GCEK19K4S
Hello, We have this Chevy pick up in for a very light surge at cruise, above 40 MPH. You can see the tach on this vehicle move up and down when the problem occurs. It does not appear to be misfiring. You can accelerate slightly and the problem will disappear....
1995 Chevrolet S10 2.2L MIL Lamp on VIN: 43JN5I7K95
i have this one came from other shop check eng lite on code 32 egr problem check egr normal i need help. thank you Trouble codes: 32 (egr problem)
1997 Chevrolet Tahoe LS 5.7L Cooling Systems VIN: 1GNEK13R2V
This truck came in with running hot. Another tech diagnosed, rad and water pump leaking. Replaced rad, water pump and thermostat. Ran ok except gauge was fluctuating. Customer said that was fine. Came back app. three weeks later running hot again. Test drive s...
1999 Chevrolet S10 LS 4.3L power steering VIN: 1GCCT19W1X
This s10 came to my shop.Sounded like cooling fan was hitting shroud. after checking it out the noise is coming from P/S oil cooler in front of vehicle. Steering fluid is full and clean. Steering feels normal.Components seem fine.Noise seems to get louder when...
2001 Chevrolet Blazer LS 4.3L Cuts out, Stall VIN: 1GNDT13W11
We have been monitoring this vehicle for about 2 months with the customer for an intermittent stalling. We've been unable to confirm stall while in our possesion. Customers description is: Will be driving vehicle on interstate for approx 20-30 mins, pull off e...
2004 Chevrolet Silverado 1500 5.3L spedo VIN: 2GCEK19T04
Hi all, Thanks for taking the time to look at my post. I have a 2004 chev silverado with an inop spedo. actually it is stuck between 20 and 25 miles per hr, then at times it will stick at a lower speed. scan data is good and shows correct speed at all times.wh...
1995 GMC Yukon 5.7L abs VIN: 1GKEK13K85
Hi all This one gives me a headache, sometimes when you turn the ignition on the red brake light is not on, only the amber one! (abs light). But i can't retrieve any codes manually or with the snap-on scanner, all what i get is no communication! Now the probl...
1997 Pontiac Grand Prix SE 3.8L Cuts out, Stall VIN: 1G2WP55219
This car stalls intermitently. Then could go for a week or more no problem. Sometimes it might do it twice in one day. Car will start, drive normaly then stall, often time at highway speed. If you coast to the side of the road, and cycle the key it might rest...
1998 Pontiac Grand Prix GTP 3.8L 1-2 shift VIN: 1G2WP5219W
This car came in with no 1st gear and a 1-2 shift solonoid stuck code. The customer had us replace the tranny with a low mileage used tranny(6K). Upon the test drive, it was discovered that the 1-2 shift solonoid was open so I replace both shift solonoids and ...
2002 Pontiac Bonneville SSEi 3.8L power sun roof VIN: 1G2HZ54122
is there any adjustment or possible electric fault? any help would be greatly appreciated. thanks in advance
2003 Pontiac Montana 3.4L key VIN: 1GMDX03E03
customer lost one of keys for van.ordered new key from gm and attempted to learn key per alldata instructions. key would not work and further checking i think this van has export pass system.option code z49 after tring that procedure with tech 2 key still will...

Fixes & Summaries for GM
Fix/Summary Answers
1979 Cadillac Eldorado 5.7L No Start, Poor Idle Quality, Misfire, BLACK SMOKE VIN: 6L57B9E652
Hello everyone, I'll keep this as brief as I can but it is going to be a bit long because I have a lot to tell. First, the fix: I replaced the ECM after reviewing all the advise I received and all the data I collected. The old girl runs nice. The suggest...
1985 Chevrolet Corvette 5.7L Stall VIN: 1G1YY0783F
While waiting for new prom, I went back to testing. First I checked resistance for all 8 injectors. All good at between 16.3 & 16.5 ohms. Then I went back to basics & repeated previous test which included montering ecm info with scanner. Next I unplugged mass ...
1992 Chevrolet S10 Blazer 4.3L abs lite VIN: 1GNPT13W5N
i would like to thank eavrybody who sent me a reply. what we did is switched the rear abs sensors side to side and the code did not change. we also unpluged it and nothing happened as far as a code change was concerned. the customer was getting annoyed with ha...
1993 Chevrolet S10 4.3L vcm mil flashing constantly VIN: 1GCCS1928P
Thanks to all that responded, as it turns out this vehicle did need to be flashed. The dealership thought I was loco and was no real help. Till I faxed them the info that I recieved from this site. Thanks again for all the help. IATN saves the day again.
1996 Chevrolet S10 LS 2.2L limp mode with no codes VIN: 1GCCS1945T
replaced 2 shift solenoids and solved all problems. gene from texas hit it perfect on that. As to no codes, pulled trans fuse and set all kinds of trans codes, I didn't understand the limited amount of problems which would set codes on these.
1996 Chevrolet Corsica 3.1L MIL Lamp on VIN: 1G1LD55M5T
Sure enough the TCC orifice filter was broken in 2 pieces. After removing the valve body that was obvious. So I put a new one in, new gaskets, and away it went, good as new. Thanks for the help!
1998 Chevrolet Blazer 4.3L No Start VIN: 1GMDT13W5W
Hi Techs.,I am still having some starting problems with this blazer. I replaced the module and Ign. coil and cap and rotor and coil wire with Delco parts. This appeared to take care of the problem but the customer informed me he was still having problems start...
1999 Chevrolet Silverado 1500 5.3L heeter core VIN: 2GCEK19T9X
Thank you to all who took time to help. I received many replies most of them about the use of a restrictor in the inlet hose. Some said that if there was no restrictor, the flow was to fast and that caused the noise. Adding a restrictor will fix this problem. ...
1998 GMC Jimmy Envoy 4.3L Temp Control VIN: 1GKDT13W0W
Vehicle fixed!!! I was able to get the actuator to move to the center by jumping the control circuit to power or ground, depending on what direction you want it to go. After centering the actuator, I installed it on the heater box and connected it. It worked...
2002 GMC Sierra 2500 HD 6.0L Trailer Brakes VIN: 1GTCK29U32
The 12v. wire on the frame leading to the brakes must have gotten hit by debris and broken, then was rubbing on the frame blowing the fuse. Repaired break and ran wire in heater hose to better protect it. Thanks for all your help.
2000 Oldsmobile Intrigue GLS 3.5L No Start VIN: 1G3WX52H6Y
Hello, Finally got the vehicle to act up and found no output from ignition switch. Took switch apart and found contacts with burn spots. Replaced switch and vehicle has not been back. I had one reply on the security system, and two replies on the crank senso... Trouble codes: P340, P385.
1997 Pontiac Grand Am SE 2.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G2NES2TXV
Even though my testing resulted in identical readings for injector resistance, flow and waveforms, the cause of this vehicle's misfire was a bad injector. I removed the fuel rail and switched the fuel injectors between #2, the original cylinder registering the... Trouble codes: P0141 (O2 Sensor Heater Circuit B1S2), P0302 (Cyl 2 Misfire Detected).
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