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Prev Professional Automotive Repair Technical Discussions for October 24, 2006
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Open Help Requests for GM
Help Request Answers
1998 Buick LeSabre Custom 3.8L blower fan VIN: 1G4HR52K52
help a/c techs,we have a 98 lesabre that on ocassion the blower motor speed will slow down or quit completely.also noticed the vent temp in the digital dash control will flash.have noticed also that on ocassion the vent direction wont go where its supposed to,...
1986 Chevrolet Corvette 5.7L Excessive Emissions, Surge, Misfire VIN: 1G1YY078XG
hello all vehicle came in for smog and gross polluted, at 15 mph hc1589, co3.49%, 25 mph hc405, co1.08%. scanned ecm no codes, idle is very unstable also, checked egr system seemsto be ok, performed pressure drop on injectors all drop approx 8 psi and ohmed in...
1992 Chevrolet Lumina Euro 3.1L axleshaft? VIN: 2G1WN54TXN
well in a nut shell the car has a vibration in steering and noise(rotational clicking noise) at low speeds,still has vibration at high speed,if you turn the steering wheel to either direction slightly goes away.it is also gone under acceleration.c.v. shaft on ...
1992 Chevrolet Corvette 5.7L No Start, Stall VIN: 1G1YY23P7N
Hello, and thanks in advance for any help. I have this 92 vette that was towed in no start over the weekend and of course go to check it out today and it starts and runs fine, until it gets hot then it will start to run eratic and eventually stall, it will the...
1997 Chevrolet Corvette 5.7L Cuts out, Stall, MIL Lamp on VIN: 1G1YY22G7V
code p1514 tac system, idles fine but when accelerating mil comes on, goes to reduced power setting, kicks in code, inspected all work done earlier by dealer and cust, appears fine, tried another maf sensor(had one handy)no difference, scan seems to show good ... Trouble codes: P1514
2000 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55K1Y
has a very intermittant cranks, no start after has been shut off for a few minutes then restart is attempted. stores p0336 and has been in shop several times. we have replaced the icm as possible cause. the way the ckt desc and conditions for setting dtc are w... Trouble codes: P0336 (crankshaft position ckt)
2002 Chevrolet Silverado 2500 HD 6.6L No Start, Surge, Stall, MIL Lamp on VIN: 1GCHK29142
i have this 2002 2500hd with a 6.6 engine, it all started with customer calling and saying that truck started and then died and wouldn't restart, i put on scanner and found code u1800, i have no way of checking this code , shop key does not support this code. ... Trouble codes: U1800
2006 Other GM HMMWV 6.5L 1-2 shift solinoid
vehical came in to shop stuck in second we puled a code 82 out of the tcm. Day shift said they found a break in the loom in the transmission and had replaced the loom this had no effect i pulled the 1-2 shift solinode ( sorry about the spelling i have an e-7 o...
1999 Pontiac Grand Prix GTP 3.8L wipers VIN: 1G2WR5213X
hi. thanks for reading this post, i know were all busy. this 99 g/p wipers will not stop in the down position in delay mode, i've checked in aldata and thats one thing that they left out for diagnosis, when shutting off the wipers, they park ok. i even tryed r...
2002 Pontiac Grand Am GT 3.4L passlock VIN: 1G2NW12E32
last march, we put a lock cylinder and set of new keys in this car, is now back with the same code for cylinder data. am i missing something here. has any one had wiring or computer problems with these cars??
1996 Saturn SL1 1.9L Poor Idle Quality, Stall VIN: 1G8ZH5285T
Thanks in advance for tour help, car came in about 1200 miles ago with oil in the antifreeze, found tsb for cracked cylinder head, replaced cylinder head with reman. and replaced timing chain. Now the car comes in with low idle when in gear and when you turn t...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Century Custom 3.1L Hesitation, Cuts out VIN: 2G4WS52M0X
I do believe I know what is wrong with this one, but the customer doesn't want to put any more money into it. When the engine gets hot, the injectors start drawing too much amperage and the PCM shuts them down randomly. Injector #3 has actually stopped working...
1999 Buick Park Avenue 3.8L tcc and 4th gear VIN: 1G4CW52KOX
Thanks You to all who responded to the transmission Problem. I am closing the request Without a fix or total repair. I did replace the Alternator as AC voltage was found at the ouput terminal of the Alternator. The Trans Harshness problem was still there at ti...
2000 Cadillac Escalade 5.7L carpet VIN: 1GEYEKK63R
thank you for all the replies i had the winshield resealed and still leaked. i removed the drivers inner fenderwell and started spraying water along the seams and drain, i found the leak being caused by the screw holding the drain assembly inplace ,the factory...
1995 Chevrolet S10 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCCS1926S
the information that was sent was very helpful, and I thank each and everyone one that helped. However, seems as though every time one problem was fixed, another would show up. I was unable to fix the problems, but I have gained alot of experience through the ...
1995 Chevrolet Astro CL 4.3L Excessive Emissions, Surge VIN: 1GNDM19W8S
First let me say thank you to everyone that took the time to read and /or respond to my request. Many of you were sure it was EGR or fuel pressure reg. I had had the EGR off twice and even tried another with no change. no indication of leak at pressure reg.[ha...
1999 Chevrolet Blazer 4.3L heater core VIN: 1GNDT13W7X
Hi Everyone, Thank you for all the responses. It ended up being the intake gasket has a small leak. It heats fine on high now but still is weak at lower temps. She is going to drive truck as is for awhile. At least she has heat. Again, thank you.
2000 Chevrolet Impala 3.4L Cuts out, Misfire, MIL Lamp on VIN: 2G1WF52E6Y
First I would like to thank all of those that replied. I have tried to answer most of you individually. the summary of what I received follows. Many mentioned maf, and some mentioned fuel. GM no longer uses flow as a measurement (so say the local dealership te... Trouble codes: P0300 (multiple cylinder misfire), P0304 (cyl 4 misfire).
2005 Chevrolet Silverado 1500 5.3L fuel tank VIN: 1GCEK14Z35
We have replaced the canister, although it did not seem plugged. We never did find the info that we where looking for in the trade mags. one other person remembered seeing the info. also, but could not find.(If anyone finds this info, please add to this post s...
1993 Pontiac Grand Prix GT 3.4L door locks VIN: 1G2WP14X8P
discovered that the 'viper' installer picked the wrong tan wire to hook the unlock signal to. this caused BOTH sides of the power door lock relay to recieve 12 volts.wired unit to the correct wire, and viola-fixed. thanx to all who replied. bill
2000 Pontiac Grand Prix GTP 3.8L Stall VIN: 1G2WR5218Y
Thanks to all that responded. We replaced the CKP sensor. Whenever there is an intermittant problem it can be hard to confirm a repair, but the vehicle has been out for a week and it has not stalled. Thanks again! Mike
2000 Pontiac Grand Prix SE 3.8L Accessories VIN: 1G2WJ52K7Y
Well this one is fixed and out the door. We had several replies pertaining to a faulty BCM which checked out fine. What we ended up finding is that the sense wire going to the alternator was bad and only sending 5 volts to the alternator. The alternator would ...
1999 Saturn SL2 1.9L tps VIN: 1G8ZK5274X
Hello all, thanks to Ed-california,Thomas-n.jersey, and Tom-alberta, who send the schematics needed to complete this job. this Saturn had evidently had the engine replaced previously, i don't know if that is when the wiring was butchered. ALL wires running fro...
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