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Prev Professional Automotive Repair Technical Discussions for February 1, 2006
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Open Help Requests for GM
Help Request Answers
1984 Buick Regal T-Type 3.8L No Start VIN: 1G4AK4797E
as i explained the car came in on the hook for no start. no spark is the problem. i have injector pulse. cam and crank sensors have been checked. disconnected,volt meter between terminals a and b i have between 5 and 11 volts @ both while cranking. good per mi...
1988 Chevrolet K2500 Cheyenne 5.7L differential VIN: 2GCFK24K6J
This 1988 Cheby Pickup came in with the fourwheel drive inop. Owner said it just quit. Checked for power to the motor, 12 volts present. Changed motor and light switch, (usually a problem with these) still no four wheel drive. On the hoist put into four wheel ...
1992 Chevrolet Corvette 5.7L clutch pedal VIN: 1G1YY33PON
customer is having problems keeping brake fluid in his clutch hydralic system. We replaced the master with an after market unit and the slave with a dealer unit. Job went well and 6 months later it was low again, In the course of repairs, I have changed both u...
1996 Chevrolet Cavalier 2.2L Transmission in UK VIN: 1G1JC5246T
Anyone in U.K have a 3T40 3 spd. trans for this car? I realize that this is not a technical request but I am unable to locate a new or used transmission for this car. It belongs to a very good customer of mine. He moved back to Kettering Northamptonshire Engla...
1997 Chevrolet K3500 7.4L shift VIN: 1GCHK3379V
vehicle starts in what appears to be 3rd, maybe 2nd. will not shift out of that gear at all. customer stated that it worked fine until the transfer case bolts broke. on the way down to our shop it acted up. all information on scanner looks fine under transmiss...
1999 Chevrolet Express 1500 4.3L o2 moniter will not VIN: 1GCEG15W0X
Hi all, Posting this for a buddy. He has a 1999 Chevy van that won't run the cat. moniter. All others have ran. There is no codes. I gave him a copy of the drive cycle. He said he has followed it butit still won't run it for him. Has anybody have this happen t...
2000 Chevrolet Impala 3.4L Rad VIN: 2G1WF55EOY
Hello all. I'm looking at an 2000 Chevy Impala with the 3400 motor. Customer complaint is that when she had her oil changed yesterday, she was told that there was oil in her coolant. She was told the oil was fine. I have seen many of these blow the lower intak...
2001 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY22G81
Help!!! We have had this corvette come back twice with this po410 code. We replaced the check valves the second time. The air pump runs as suppose to. We are stumped and want to see if anybody has seen or heard of any problems with the air induction on the vet... Trouble codes: P0410
2001 Chevrolet Malibu LS 3.1L Keyless entry VIN: 1G1NE52J21
Trying to activate a new additional key fob. I have a up to date Tech II and I can not communicate with the bcm in any way. If I go into the bcm, special functions, and then program key fobs the Tech II states no vehicle communcation. If I check codes the Tech...
2002 Chevrolet Trailblazer LS 4.2L hvac system VIN: 1GNDT3S822
Hello techs, The bosses wifes truck always has some air flow out of vents in any mode position. Have pulled lower dash and watched blend door motors working. This is a manual system have reflashed hvac system and pulled inspection cover to see the doors moving...
2002 Chevrolet Trailblazer LS 4.2L No Start VIN: 1GNDT13S32
have a 2002 trailblazer cust says wont start after warm unless throttle pedal is depressed we were able to see this happen only for a few moments now it is fine possible it happens more in wet conditions. thanks
2003 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNET165X3
Trailblazer that runs fine but sets PO171 System Lean code at idle. Long term fuel trim at 22 Short trim fluctuating near 0. Fuel pressure good at 54 PSI, no vacuum leaks found, sensor data looks good, oxygen sensor switching very good. Also had a U1000 - clas... Trouble codes: P0171 (System lean), U1000 (Serial communication)
1996 GMC K1500 Suburban 5.7L 2-3 shift VIN: 1GKFK16R7T
Hello, This is my Suburban and I am having problems with the 2-3 shift. It won't shift from 2 to 3 while driving normal to hard. When in the morning or after it has cooled down it won't shift out of 2nd unless you back off the gas for a little bit and then it ...
1991 Oldsmobile Cutlass Supreme 2.3L ing.spark from timin VIN: 1G3WH14D1M
ing. spark coming from timing cover,by crank shehf damper
1998 Oldsmobile Bravada 4.3L Not sure VIN: 1GHDT13W0W
Customer stated that he had a belt squeel and his tensioner jumps on cold starts. . We checked all the pulleys and did not find any bearings that were bad. We did have a squeal when we spun the water pump so we replaced the pump. The belt was also bad and we r...
1999 Oldsmobile Intrigue GL 3.5L tcc VIN: QWXF622322
ran tcc engage test with snap on convertor wont engage i have 12 volts to yellow wire to tcc release at 20way conn thursday will take side cover off to look for problem what is the most common failure is a solenoid or mechanical
2001 Oldsmobile Aurora 4.0L Hesitation, Surge VIN: 1G3GS64C81
originally car was here for a loud gurgle type sound from right front area of dash when it rained. found it was a bad previous windshield install that trapped water along outside of windshield along right pillar. customer picked the car up and came right back ... Trouble codes: P1599 (stall or near stall detected)
1996 Pontiac Sunfire SE 2.2L no spark or fuel VIN: 1G2JB124XT
checked wiring to ecm was corroded-2 wires one communication and one ground.repair.fuel pump working no injector pulse.r&r crank sensor,cam sensor,ign.mod. and ign switch.confirmed all parts good intake and output sides.we had andother 96 sunfire in at same ti...
1998 Pontiac Grand Am GT 3.1L Races VIN: 1G2NW12M2W
Good Morning Group, Have a dilema with this grand Am. It came in with the complaint that when cruising down the road at high speeds the car would not slow down when they took their foot off the throttle. If she hit the brakes and slowed the car down it would ...
1999 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5270X
How to do a readiness test or drive cycle on a 98 Saturn SL2 twin cam.

Fixes & Summaries for GM
Fix/Summary Answers
1969 Buick electra 455CID brake drums VIN: 4846179H29
thanks for all the replys and links #1 car buick owner elected not to repair or lets say replace the drums.He'll take his chances.#2 70 olds owner will get with soon??? to decide what he'll do.he has a very nice & clean California olds convertible.the lower ba...
1990 Buick Century Custom 3.3L Hesitation, Cuts out, Stall
Thanks for all the helpful replies. I had forgot to mention when I posted this request that I had unplugged the MAF and also checked TPS. Both were good. Due to some of the replies, the next thing I checked were the fuel injectors. The resistance of the inject...
1994 Buick LeSabre Custom 3.8L Hesitation, Stall, MIL Lamp on VIN: IG4HR52L9R
It took a lot of time on this car, but learned to have a lot of patience on this problem, Have checked the wires from the main loom to CPS and the ground wires under the module and coil. I suggested to the cust. another PCM but have to wait as his budget is ti...
1997 Cadillac DeVille 4.6L codes VIN: 1G6KD54Y3V
Noise was resonace from exhaust touching subframe on acceleration. required brake control module to correct 'magnasteer' code. thanks for replaies. Brian.
1994 Chevrolet S10 Blazer 4.3L heater core VIN: 1GNT13W292
thanks everybody, I had 14 great replies, i took a bit from each one. flatrate called for 3.5 took me four, next one should be quicker. thanks again Dave
1995 Chevrolet Camaro 3.4L cooling system VIN: 2G1FP22S6S
Thank you! thank you! thank you! The problem was a broken head bolt, the way we figure, the head gasket would not leak untill combustion pressures would overcome the gasket in the head bolt area, so the leak down tests and block test showed no problems. from n...
2002 Oldsmobile Alero GL 2.2L gauges VIN: 1G3NL52F62
Had car sublet for vertronics scanner use, required cluster to be replaced and then bcm reprogram. thanks for responces. Brian.
1996 Pontiac Sunfire GT 2.4L engine VIN: 1G2JD12T5T
thank you all very much for responding,, we made up a u out or plumbing fittings and bypassed heater core , drove for 10 miles,, and problem corrected, now i have to call and tell her she needs a heater core,, however it is better than pulling head,, once agai...
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