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Help Request Answers
1992 Buick Park Avenue 3.8L crank pully
cannot get crank pully off to do visual inspection of crank sensor. pully appears soft and prone to bend if not pulled correctly. i have pulled these off in the past and dont remember having any trouble getting them off. usually slide right off. any ideas?		 View
1997 Cadillac Seville 4.6L MIL Lamp on
pulling my hair out over this one.Dont know aht else to look at. Monitering o2's and B2S1 is lazy and stays lean longer that the rest.found no vac leaks.fuel pressure is good. Trouble codes: p0174 (fuel trim lean bank 2).		 View
1985 Chevrolet S10 Pickup 2.8L Stall
customer brought truck in with poor idle quality/didn't run unless you kept your foot on the accelerator, also would die when turning corners. replaced carburetor. truck runs well now, but still dies when turning corners and takes time before it restarts. almo...		 View
1997 Chevrolet Pickup 5.7L No Start
1. will not crank. 2. if you put fuel in throtle body it will crank and run until fuel is gone. 3. it has a erratic fire coming from spark plug wire out of the distributor cap. 4. it has erratic injector pulse coming from noid light tester. 5. it has the v... Trouble codes: 1345 (cam and crank coilation).		 View
1999 Chevrolet Malibu 2.4L Hesitation, Misfire
HELLO all iatners, not sure what to do with this chevy malibu. customer came in complaining that he would be coasting at about 100-110 km on the highway then when he lets off teh gas a tad then decides to accelerate the vehicle [...] and bogs (almost lik...		 View
1999 Chevrolet Cavalier 2.2L high beam indicator and drl light
car has a high beam indicator that was burnt out so the bulb was changed and the light is on all the time.(pre excisting condition told after).and the drl does not work.replaced cluster and multi function switch.no change.the headlights work low and high beam		 View
2001 Chevrolet Silverado 6.6L Poor Fuel Economy
i have a good customer that the dealer says if needs fuel injectors. it is low on power white smoke from exhaust. the fuel filter has been changed recently. it is out of warrenty by 4 mo. my question is can these inectors be changed without out special tools i...		 View
2002 Chevrolet Impala 3.4L Accessories
Hello all. I have a strange problem. Three weeks ago, a customer came in with a clicking noise in the dash and the headlight would begin flashing, after the car is cut off. While the car is running, it operates normally. I asked her to drop it off and I would...		 View
2004 Chevrolet Express 4.8L door locks
hi gm techs i have a 2004 van that while driving the door locks will unlock and lock while cruising it does not happen when stopped or when the van is turned off i have not looked at it yet i was just hoping someone has seen it before me and can give me a idea...		 View
2004 Chevrolet Cavalier 2.2L Pads and rotors
Hi, this car came in with the front pads baked. They were overheated and smelled. I replaced the pads and rotors, passenger side brake hose (was cracked), and the passenger side caliper as it was now leaking. The brakes worked ok for a couple of weeks and then...		 View
2004 Chevrolet Malibu 2.2L readiness
Hi folks, this car is giving me a headache and I could really use some input. This Malibu came in with code P0420 catalyst efficiency. We replaced the catalyst, it was empty inside, someone already removed the innards. We also replaced the rear sensor, another...		 View
2004 Chevrolet Monte Carlo 3.4L gauges
Hello to all I want to thank everyone for any help you could give me. I have a 2004 Chev. monte carlo with a 3.4.The problem is the speedometer tach and gas gauge is peged out or now I say was peged. I checked for codes in the BCM and found B3128 driversdoor l...		 View
2008 Chevrolet silverado 6.6L No Start
This vehicle has a no start / no crank condition when the key is turned to start all of the lights on the dash go out, and the engine light stays on solid. It has a hard code P062F that returns instantly when cleard. The only info i could find on this code is ... Trouble codes: p062f (internal eeprom error engine computer).		 View
1996 GMC Suburban 7.4L unknown
truck came in for set of tires,noticed rear brake lockup low speeds out of round drums tuned drums adjusted rears all was good. customer said shop he takes it to could not repair this. customer had it a week or so started locking up again. got it back,abs ligh...		 View
1990 Oldsmobile Cutlass Supreme 3.1L Poor Idle Quality, Surge
Car came in with complaint of rough idle and possible misfire. cust said it all started when he cleaned t/body. he also requested new plugs since they had never been changed. When I test drove car I found that it ran and drove perfect until you came to an idle...		 View
2007 Other GM Step Van 6.0L No Start, Surge, Cuts out, Stall, MIL Lamp on
This is an on going problem that is getting out of hand. This is a 2007 GM chassis (workhorse) w/ a 6.0L gas and automatic transmission w/ approx 100,000km on it. Vehicle orginally came in running very rough. We found the PCM was only firing 6 of the 8 coils ...		 View
1999 Pontiac Grand Am 3.4L cooling system
customer stated vehicle pushing coolant out resevoir. flushed cooling system, cooling fans come at 226 degrees. vehicle is not over heating, runs between 195 and 226 degrees at all times. good heat no problems during test drive or sitting at idle. once vehicle...		 View
1999 Pontiac Bonneville 3.8L MIL Lamp on
hello, we have this bonneville w/ po171,lean condition. we replaced both o2 sensors,fuel pump&filter,m.a.p sensor,m.a.f. sensor, and can't find any vacuume leaks, exhaust is also new. doe's anyone have any other suggestions. i was laening toward a pressure reg... Trouble codes: po171 (bank one lean).		 View
2006 Pontiac Torrent 3.4L heater
hey guys. vehicle came in with a no heat problem. the lady had it at another shop and had a 60,000 mile chechup, they flushed rad, injectors, and minor tune-up. we replaced t-stat ran it hoses got hot both in and out, but no heat. my tech discovered that the b...		 View

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick LeSabre 3.8L starting running
Thank you to everyone who responded to the requests. There was a ground bar that needed to be replaced. Again, thanks!		 26
2001 Buick Regal 3.8L No Start
WELL I RECEIVED 20 REPLIES ON THIS PROBLEM- AND I THINK 18 TOLD ME ABOUT THE IGNITION SWITCH THAT COULD CAUSE THIS FAULT-WE REPLACED THE SWITCH AND ALL ITS LITTLE GLITCHES WENT AWAY-IT LOOKED TO ME THAT ALL THE POWER WENT THRU THIS PINK WIRE THAT HAD A BAD CON... Trouble codes: U1040 (loss of ebcm communications).		 20
1987 Cadillac DeVille 4.1L valve train
thanks to all who responded. the deville has been fixed. the lifters had to be replaced. it is suggested that before the work was started to replace the intake gaskets due to coolant in the oil that the oil be changed and the engine ran for a few minutes to al...		 4
1982 Chevrolet Pickup 5.0L preignition w/loaded
Sorry it has taken so long to close out this help request. Our local weather suddenly turned cold and we needed a good warm day for the customer to confirm that the preignition problem was solved with the replacement of the positive compensated egr valve with ...		 15
2001 Chevrolet S10 Pickup 4.3L ltft too high
Here's the deal, all this grief was caused by the fact that my Genisys 3.0 simply lied to me,or was being lied to. Maybe this kid put a chip in it. The Modis showed stft at about ZERO plus or minus and ltft at 5-6 %.Lesson of the day is if you have no codes fo... Trouble codes: po, 449b (evaporative emmisions vent solonoid control circuit).		 6
2002 Chevrolet Venture 3.4L No Start
I would like to thank eveyone for thier input. I tried a key relearn-no help, i really did not think it was antitheft. I also noticed the 3x and 7x signals matched rpm but the 24x stayed at 298 rpm always. After further review and testing the 24x at pcm i had ... Trouble codes: p1189 (engine oil pressure sensor).		 7
2005 Chevrolet Suburban 5.3L door lock
Thanks for all who replied:I replaced the latch mechanism on therear hatch with new:you have to buy the whole piece to get the electrical portion of the lock. I found that had power going into the lock switch on the latch but the needed function to unlock or w...		 3
2002 GMC Yukon 6.0L heated seats
SORRY IT SO LONG TO POST. VEHICLE WAS FROM A CAR LOT AND THEY GAVE CUSTOMER A DIS COUNT ON PURCHACE PRICE IN STEAD OF FIXING I DID FIND OUT ON THESE THAT THE SEAT ELEMENTS ARE A COMON FAILURE ITEM. AND BECAUSE OF POOR DIAGRAMS YOU DO HAVE TO REMOVE SEAT COVER...		 4
2002 GMC Yukon 6.0L heated seats
SORRY IT SO LONG TO POST. VEHICLE WAS FROM A CAR LOT AND THEY GAVE CUSTOMER A DIS COUNT ON PURCHACE PRICE IN STEAD OF FIXING I DID FIND OUT ON THESE THAT THE SEAT ELEMENTS ARE A COMON FAILURE ITEM. AND BECAUSE OF POOR DIAGRAMS YOU DO HAVE TO REMOVE SEAT COVER...		 3
2002 GMC Yukon XL 6.0L Unknown
Well I do appreciate alot all of the retuns on my help request. Thank you for your time and advice. David, Brad, Dean, Mark, Alex and Scott were all correct. I thought John and Lee had it as I thought a spun bearing also. Art, Alex, and Jason seemed to agr...		 16
2002 Oldsmobile Silhouette 3.4L temp gauge
the customer hasnt brought the vehicle back. i told him this may be a normal operation of the vehicle, but i had to look into it further to confirm. if it does return ill post any more info i find. thanks for all the replies. 		15
1997 Pontiac Grand Prix 3.8L MIL Lamp on
Thanks for all who replied followed flow chart by alldata had 12 volts on boost soleind ground by computor was an intermittent problem car has been gone for 3 weeks ses has not come back on Trouble codes: p1645 (boost control soleniod).		 3
2002 Pontiac Grand Prix 3.1L Engin
About 20% of the replies related experiences where the lower end failed very soon after doing the manifold gasket repair. About 40% related experiences where the engine ran for a good while, in some cases years, after doing the repair. About 40% sugg...		 29
2000 Saturn SL2 1.9L Mechanical
i realy thank all who responded to my post.i pulled the transmission three times and could not find the problem.i bought a core and rebuilt it with no problems		 5
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