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Prev Professional Automotive Repair Technical Discussions for October 19, 2007
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Help Request Answers
1989 Buick Reatta 3.8L Poor Idle Quality, Misfire VIN: 1G4EC11C5K
Friends Fathers car, Just my Luck. Anyways, This Reatta loses injector pulse to cylinder #3 after running for about 2 or less minutes. I have tried 2 remanufactured computers. Both with the same results. All the wiring looks good. However I don't understand th...
1998 Buick Regal 25th Anniversary Edition 3.8L injectors VIN: 2G4WF5219W
This is a strange one, we have in our shop a 98 Regal with the 3.8 - it had the supercharger melt down and caused a fire under the hood (not too bad) anyway, the customer had another 98 Olds Intrigue with a 3.8 that had rear-end damage but ran good. he had ano...
1999 Buick Regal LS 3.8L 1-2 shift VIN: 2G4WB52K7X
hI guys I have a 4t65e trans. blues. Has a 1-2 shudder med to heavy throttle. light throttle don't seem to notice. the trans has been recently rebuilt by our shop and someone had been in there before. the unit was tore up pretty good and we did have to replace...
1996 Cadillac Eldorado ETC 4.6L Theft Lock VIN: 1G6ET1295T
I have a 1996 caddy that will crank but not start,the IPC sets a B2750 Pass Key data communication failure,and the PCM sets a P1631 Password not correct.Have tested the resistor in the key at 1.5k and tested the two little wires at the base of the colum to see...
1989 Chevrolet G10 Chevy Van 5.0L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Poor Fuel Economy VIN: 1GCDG15H9K
Alright I have run out of ideas on this van. I bought this van to use as a service vehicle. It has been sitting for two to three years. I put a batterry in in and it started after a few cranks, but ran very poorly, as expected. It only had a few gallons of fue... Trouble codes: 45 (o2 sensor rich)
1989 Chevrolet Camaro Iroc-Z 5.7L Cuts out, Stall VIN: 1G1FP2181K
car will start and stall. will restart after a few min.happens usually when car is cool.seems ok when car is warmed up.when it stalls,sounds like its sucking excessive air,this may be normal.
2000 Chevrolet Impala 3.8L Differential VIN: 2G1WF52KXY
test drive and found bump/bounce appears to be in drive and under light acceleration can be felt. in neutral can not feel. checked tire pressures and runout ok. axle runout ok. believe problem to be in drive gears in transmission. has anyone else ...
2000 Chevrolet S10 4.3L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1GCCT19WXY
02 sensor stick on lean an bank i runs rich Trouble codes: P0171
2000 Chevrolet S10 2.2L MIL Lamp on VIN: 1GCCS1944Y
s10 from hell changed ckp no wave form ? did crank relearn all ok until 2 key starts later losses sync do relearn again all ok until 2 more key cycles then code and bucks hard during start i sill have good waave forn just persistant code and buckinking during... Trouble codes: 335 (ckpcircuit)
2000 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13W8Y
We did a routine intake job on this blazer for a coolant leak. After getting put together be were one tooth off on the distributor so we pulled up #1 cylinder on tdc and re dropped the distributor and the engine fired up but not before hesitating to start but ... Trouble codes: P134
2002 Chevrolet Impala 3.4L security light VIN: 2G1WF52E42
We need some help with this car. The car came in for a no crank no start situation. I was contacted prior to this happening of the lock cylinder binding and not operating as it should. When it came in on the hook, we confirmed that the lock cylinder did bind a...
2005 Chevrolet Silverado 1500 4.3L Cuts out, Stall, die intermittently VIN: 1GCEC14X95
This truck came into the shop with an intermittent dieing problem. When it did die, I found that I lost spark due to loss of power to the coil. Another shop had replaced the connector tothe coil which ended up being the problem I put on another connector and t...
2006 Chevrolet Silverado 2500 HD LT 6.6L driveshaft or diff VIN: 1GCHK23D26
This truck is a 4 door short box. The worst part is I cannot duplicate the problem on the hoist. This problem starts with a slight vibration at about 62mph,felt in the floor boards sounds like behind rear seat. light accel to 65 and stay steady vibration gets ...
1999 GMC Yukon Denali SLE 5.7L 4wd VIN: 1GKEK13R7X
hello friends. we have this 99 yukon with inop. 4WD. the switches on the dash seem to work,as they all light and blink once with ignition cycle. we found a bad connector at the transfer case encoder motor, and replaced it. fuses are good and circuit is getting...
2001 GMC Yukon XL 1500 SLT 5.3L Suspension VIN: 3GKFK16T61
Hi, I don't work on many of these so I need a bit of help. This vehicle has the self leveling rear suspension and it is raised up. It will not come down to its normal ride height. Consequently it rides very hard and is quite bouncy. What can I do to diagnose ...
2003 GMC Sierra 1500 SLE 5.3L Stall, MIL Lamp on VIN: 2GTEK19T23
Hey guys I have a real problem and need some new direction. customer went camping with this truck and during the night a rodent chewed an injector wire, next morning he went to start the truck and it had a misfire, he mickey moused a repair on the wire and whe... Trouble codes: P0607 (trans range sensor out of range)
1999 Oldsmobile Silhouette Premiere 3.4L abs and tcs VIN: 1GHDX03E2X
This vehicle is getting to me. It came in with a code for the right front wheel speed sensor, checked the sensor, the pigtail was broken right off. Replaced the hub assembly with abs sensor, cleared codes. Started vehicle a few minutes later the abs and tcs li...
1989 Pontiac Grand Prix 3.1L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on
here is my problem, I can start it fine. Ok but not so great idle. when i hit the gas pedal it stalls out on me. fuel pressure is ok and car has spark. MIL light comes on once like every 3 minutes. i hooked up a Actron Scan tool and i could not talk to the ECM...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52L7S
First off thanks to all the replies. Your help was greatly appreciated. Finally got ahold of Ken Zanders GM trainer out of Chicago who told me what I had going was impossible, injector drivers of course do go bad but the possibility of 4 pcm's with same proble... Trouble codes: P0321 (IC circut).
2004 Buick Rendezvous CX 3.4L a.b.s.pump VIN: 3G5DB03E24
I want to say thanks to everyone who tried to help me out.Dan from ohio really had some good info on testing the wheelspeed sensors while loaded, this helped out.First I had put on aftermarket hub bearings(which was a mistake).I kept checking and checking and ...
2004 Cadillac Escalade EXT 6.0L Sound System VIN: GYEK62N44G
Hi everybody, thanks for all who replied and helped me, the problem as we beleive is the sound amplifier under the centre console, we have placed order for it waiting to arrive, Thanks again Regards
2003 Chevrolet Silverado 2500 6.0L reverse VIN: 1GCHK29U43
I checked the cooler for restickions but it seem to have good flow. There has not been any other work done to the trans. before this. The customer has decided to have it towed to the dealer so now I won't get to know what fixes it. Thanks to those who helped.
1998 GMC Jimmy Envoy 4.3L Excessive Emissions, Stall, popping on accel VIN: 1GKDT13W1W
We still have not figured out what is going on with this engine. We had already tried what most respondents suggested to no avail. We just replaced the engine and the truck still continues to over fuel. We are reflashing computer at this time hopefully this... Trouble codes: P0300.
2000 GMC C2500 Sierra SL 5.7L braking VIN: 1GTGC24R9Y
2004 GMC Yukon SLE 4.8L MIL Lamp on VIN: 1GKEC13V94
Hey All,THANKS for the great input.The vent solenoid did fix the problem.Check my modes 6 data and all evap Test passed.This would have been a tough problem if it wasn't for all your help!!!Thank again Alex J. Trouble codes: P0442.
1999 Pontiac Grand Prix GT 3.8L No Start, Stall VIN: 1G2WP52K4X
sorry it took so long to close, wnted to make sure the car was fixed. we disconneected the bcm to inspect wiring and connections. there were no signs of any issues. so we pluged it back in and continued testing. we kept the car for several days and could not ... Trouble codes: P1626 (anti theft deterent fuel enable signal lost), P1629 (theft deterent signal no0t recieved).
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