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Prev Professional Automotive Repair Technical Discussions for September 19, 2006
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Open Help Requests for GM
Help Request Answers
1989 Buick Electra Park Avenue Ultra 3.8L 1-2 shift VIN: 1G4CU54C6K
Got this 4T60E that I rebuilt a year ago..ran fine for 15,000 miles until customer said it began leaking oil out the left axle seal. Customer replaced seal, still leaked. He had it brought to me. I found that it is not shifting out of 1st gear...just 1 and R. ...
1992 Buick Century Special 3.3L Poor Idle Quality, Surge, Stall VIN: 1G4AG54N7N
Hi Techs I got buick that runs bad when cooling fan comes on o2 sensor drop to 4mv Integrtr goes up, but if car will stay running if you help it .when fan turns off car run fine.
1994 Buick Century Special 3.1L cal.ft sticking VIN: 3G4AG55M2R
thanks for any help,road test about 6 miles and ft brakes only get hot and stick no free movment.Back master away from booster & wheels are free.I know this is not a fix but we put washers between master and booster and concen is gone,so is master bad or boost...
1990 Cadillac DeVille 4.5L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1G6CD5336L
Got his car several months ago. Egr was leaking badly and plugs fouled (no vacuum to egr at idle). Replace both and did not correct problem. Tested injector resistence and found 3 bad ones. Replaced them. Still no better. Road tested and got it hot and reteste...
1999 Cadillac Escalade 5.7L kEYLESS VIN: 1GYEK13R1X
Hi all. I replaced BCM to fix a nonfunctional windows/wipers/radio problem, but after putting in new BCM, keyless entry is now nonfunctional. I've tried to get vehicle to go into transmitter reprogram mode and tried to get transmitters to resync with no luck. ...
1980 Chevrolet Corvette 5.7L steering cylinder VIN: 1Z878AS408
Car came to me with a steering cylinder problem( rod was pulled through bracket) r&r cylinder and control valve, but did not have any pressure to activate system, r&r pump but still no steering assist. The valve seems to be working right as I can adjust it and...
1986 Chevrolet Corvette 5.7L power light motor VIN: 1G1YY0785G
Thanks In Advance. I don't work on too many Vettes here so I not sure what controls the power to stop the right side headlight motor when the lights are turned off and the headlight turns in. The headlight opens OK but doesn't stop tring to close it when you ...
1988 Chevrolet Corvette 35th Anniversary Edition 5.7L temp gage VIN: 1G1YY2183J
Hi guys, this is more of a "I can't find the information" question. This vette runs 185-205 on the road with the a/c. The fan cycles in at 221-225. In town at stop lights and slow traffic it will reach 230. Fan runs like it's supposed to. I can't find any wher...
1994 Chevrolet S10 2.2L Excessive Emissions VIN: 1GCCS1447R
any body that can give us help on this truck on high nox that had this problem, thanks fred
1994 Chevrolet Lumina APV 3.1L No Start VIN: 1GNDU06DXR
This problem is not constant, only occurs after hot soak, starts and stalls a few times before it keeps running. Starts better with foot on accel slightly.Runs well, most of the time it starts well not. Very hard to get it doing it and pinpoint the problem. th...
1995 Chevrolet S10 4.3L Cuts out, Stall VIN: 1GCC519Z6S
when the vehicle starts up, it seems to run well for about two (20 minutes, then the engine will start to shake, then cuts off. It seems to stat to miss when the air idle control (IAC) comes in. It will miss on the 1st and 2nd cylinder on the left side of the ...
1996 Chevrolet Corvette 5.7L Cuts out VIN: 1GC1243YHK
Ok so I have this vette coming that mas running fine but the owner felt it was time to do a tune up. they did everything cap rotor and all and since doing the work the first problem he found was that the security system would nit unlock the doors or lock them ...
1997 Chevrolet Express 1500 5.7L steering pump VIN: 1GBEB25K2M
we replaced the power steering pump and bled. all was good then customer came back with an inop p/steering. we replaced the evo sensor and no change. there is a lot of air in the system and it works when you first start the engine then no assist. there are no ...
1999 Chevrolet S10 LS 4.3L Intermittent no start VIN: 1GCCT19W2X
This truck has come into our shop a couple times for a no start overnight and while sitting for extended periods. The vehicle will turn over but will not fire. Did a fuel pressure check and is around 62 psi spec is 60-66 psi. Went through basic checks found we...
2000 Chevrolet Impala LS 3.8L Poor Fuel Economy VIN: 2G1WH55K2Y
thanks in advance. parts suppliers car came in with sudden dop in fuel economy. 95 miles on this tank of gas. nop codes in history. rear o2 sensor reads above .700 @ idle. front o2 sweeps normally. fuel trim short varies about -1 to +1. long trim -3. faint sme...
2000 Chevrolet Cavalier LS 2.2L heatercore VIN: 1G1JF5244Y
Hello Techs.Cavalier came in for no mode door operation.Found blend door broken.On this model you need to remove heater box assembly to replace. No problem doing job went well,while their I also replaced evap core &heatercore.My problem is heatercore has noise...
2004 Chevrolet Silverado 2500 HD 6.0L No Start VIN: 1GCHK29144
I have a 2004 2500 with a 6.6l Duramax engine that is giving us a fit. It came in with a complaint of no start after it sits or it would start and immediately die . After it has been driven for a while it starts but has excessive crank time. We checked it whil...
1997 Oldsmobile Aurora 4.0L car VIN: 1G3GR62C6V
Here's a brain teaser for you. Every once in a while everything shuts down in the car. Engine, lights, radio, cluster, and all memory systems reset (Radio presets, clock, information center etc.) It acts just like when you have a bad connection on the dual pos...
1989 Pontiac Bonneville SE 3.8L Cuts out, Stall
I got a new one on me. 1989 Bonneville 3800 VIN C, vehicle came in on hook, customer states car stalled and would not restart for about 5 mins. He didn't trust it so he had it towed. I of course drove the it, hot soaked it and could not duplicate the symtom. W...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Cadillac Seville 4.9L rear end VIN: 1G6KS52B7P
this one is fixed, rear toe was out 1/2', thanks to all that replied, Steve from Florida, Mark from Indiana, and Tim from Illinois hit the nail on the head, suggesting rear toe was the cause of the rear end movement, customer happy and gone. full alignment was...
1995 Cadillac DeVille 4.9L Poor Idle Quality, Misfire VIN: 1G6KD52B5S
This car has been a pain. We have used everyones ideas and none have worked out as of yet. Customer is thinking about trading in. I have never not fixed a car and this is hurting my pride. Thanks for all your help
1997 Chevrolet K1500 Cheyenne 5.7L Pinion seal VIN: 2GCEK19R2V
Thanks for the replies. I will now use the method of marking the nut and the pinion.
2001 Chevrolet Impala 3.4L Radio VIN: 2G1WF55E91
It is a radio with rds and will have to go to dealer. found a dealer to do it for 90.00 Thanks for all the help.
2001 Chevrolet S10 2.2L tailights/fuse box VIN: 1GCC519551
well thanks to all it was a fuse box kinda,..i put another in and only half a fix,..hmmm ok,..must keep looking started to wiggle harness at bulkhead,..all kinds of stuff started happening,.so disconnect battery so as not to burn this box,.and low and behold,....
2002 Chevrolet Silverado 2500 HD 6.0L ps pump VIN: 1GCHK24V72
live and learn , i should have known better.like most replies stated a new factory pump was the fix for this one.thanks again to a great bunch of guys. pete
2004 Chevrolet Silverado 2500 6.0L engine VIN: 1GCHC29U04
we never could get a oil pressure reading on top of engine. but keep good oil pressure at oil filter. recheck wiring at sending unit everything still check good. replaced dash unit and reflashed. truck gone and has not had same problem as of yet. thanks again ...
1999 GMC K1500 Suburban SLE 5.7L MIL Lamp on VIN: 3GKFK16R3X
finally got this concern to act up and when we removed the egr valve we could see the pintle was up off the seat. we touched the pintle with a pocket screw driver and the pintle returned to the seat. we installed a new egr valve (delco)and cleared the code sto... Trouble codes: P1404 (linier egr system performance).
2003 Pontiac Montana 3.4L 2nd gear starts VIN: 1GNDX03E43
dissasembled the transmission there were no visible signs of the fault. was not to suprised by this as it was so intermitent. we installed a gm serta rebuild and the customer has had no furhter faults obviously an internal fault but can not say what it was
1997 Saturn SC1 1.9L No Start VIN: 1G8ZE1284V
Thank you to Joseph, Tom and Leon for the very quick replies. The problem we believe was the lack of good connection at the ICM to casting. The wireset turned out higher than max resistance so we also replaced them. The original PCM was left in the car but the...
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