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Prev Professional Automotive Repair Technical Discussions for February 1, 2007
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Open Help Requests for GM
Help Request Answers
1999 Buick Regal LS 3.8L remote locks VIN: 2G4WB52K5X
i'm pretty sure what the problem is but would like someone else's input. car came in because doors would not unlock or lock with key remote. customer said that they used to work but over time you had to stand closer and closer to the car before the doors wou...
2002 Buick Century Custom 3.1L dash lights VIN: 2G4WS52J32
Hi All I have a Buick that the dash warring lights come on intermitant may stay off for a day some times they come on right away the ABS TRAC service light will be on at the same time but some times all waring lights will go on if you cycle the key the lights ...
1993 Cadillac DeVille 4.9L Excessive Emissions VIN: 1G6CD53B8P
I have a cadillac that keeps blowing up mufflers. I have an idea why but need some help on diagnose. It will not go into closed loop and runs rich. It has new cap, rotor, wires, plugs ( all were dry), egr (POS flow)and O2 sensor. The ECT is reading correctly...
1990 Chevrolet K1500 Cheyenne 5.7L Speedometer VIN: 1GCDK14KXL
Hello Truck came in with used cluster from different shop. Speedometer is not accurate. I have the chip to recalibrate the speedo. What I need to know is what 2 pins on the back of the cluster do I need touch to the the battery to start the reprograming. I ha...
1993 Chevrolet Lumina APV 3.1L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNDU06D4P
This old timer is killing me. It came in with the complaint of stalling. It has not stalled for me but it has a very rough idle, feels lean. I opened the hood and it looks like every one in town has messed with it. Some tune -up parts hade been done. I added d... Trouble codes: 45 (rich exhaust)
1994 Chevrolet Lumina 3.4L engine VIN: 1G1WP11S8R
I am trying to quote a repair for an oil leak at the oil pump drive shaft seal. I am not real familiar with this engine. My AllData system has time posted for replacement of oil pump drive shaft and also has time posted for the distributor shaft seal. Oil pump...
1995 Chevrolet Corvette ZR-1 5.7L cooling system VIN: 1G1YZ22J7S
Hope there is someone who is familar with the LT5 engines used in the ZR1 Corvettes. This car uses a 190 degree thermostat, new one installed prior to tests that I ran. My problem is that the car runs hotter than I think it should. At highway speeds, 55 to 65...
2000 Chevrolet Silverado 1500 5.3L bell housing VIN: 1GCEC19T8X
Vehcile has rattling noise as if something was jumping around in exhaust, noise is coming from inside bellhousing,can heard at idle/park, worst in gear light load, due to small inspection hole can not see flywheel that good even with starter out. Would think t...
2001 Chevrolet Silverado 2500 6.0L No Start, Starts and Dies VIN: 1GCHK29U71
I have multiple issues with this truck however the most serious one is no communication between the solus or an OTC scanner with any of the modules. Items working - Windows and door locks, head lights and tail lights, dash lights, cranks OK starts and dies, ...
2001 Chevrolet Suburban 1500 5.3L Misfire VIN: 3GNNFK16TX
customer brought vehicle in today with a concern of a check engine light. The light had been on but is out at this time and has;nt been on since i've started working on it. Retrieved stored code p0300 (engine misfire detected) with no freeze frame data. There ... Trouble codes: P0300
2003 Chevrolet Express 2500 6.0L Hydro boost VIN: 1GAGG29U93
Customer brought vehicle in for pedal going to the floor. During normal engine traveling operation brakes feel perfect. If you sit still (or go to take vehicle out of park) and push hard enough, pedal will slowly go to the floor. Feels like your foot is overpo...
2003 Chevrolet Impala 3.4L Poor Idle Quality, cooling fans VIN: 2GIWF52E03
HELP.this engine wll not idle properly and the cooling fans go up and down in speed all the time. the only way to get this to stop is to dis-connect the ect. then the idle comes down and the fans run at a constant middle speed. i have ran the complete test as ... Trouble codes: P0507
1997 GMC Yukon SLE 5.7L 1-2 Shift VIN: 1GKEK13RXV
this vehicle came in for a trans shift concern. test drove and found that the tran had no 2-3 shift unless you let up off the accellorator. then it would shift hard into 3rd. the fliud was very dirty. I found alot of info to cause me to replace the transmissio...
2003 GMC Sierra 1500 5.3L volt meter VIN: 1GETK14T53
Greetings, hopefully someone can help. I have this GMC Sierra that has me thinking. The customer says that the volt meter will read ok, then it will either go all the way low or all the way high on way at a time. Once the key is shut off and turned back on, th...
1997 Oldsmobile Bravada 4.3L front axles VIN: 1GHDT13WOV
when you drive this vehicle it has a loud bang coming from the right front ,it's pretty loud & YOU CAN SEE THE HOOD SHAKE EVERY TIME IT MAKES THE BANG NOISE. the funny thing is that there is no humming noise or vibration. i belive that it is the front diff. it...
1999 Pontiac Grand Am GT 3.4L pump rack VIN: 1G2NW12E5X
Hello all, I have A 99 Grand Am that steers very easy at all speeds. it has variable effort steering, and it feels like the valve is open all the time. I do'nt know if it is stuck open or getting a bad signal. Does anybody know how I can test this. thank you D...
2001 Pontiac Grand Am SE 3.4L No Start, Cuts out VIN: 1G2NF52E11
2001 Pontiac Grand Am SE 2.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G2NF52T71
I have this Grand AM that has had a tune-up with OE parts and fuel pump and filter replaced. The problem is that it has a constant lean run condition with trouble code P0171. If I remove a vacuum line and try to lean it out further the 02 sensor volts climb to... Trouble codes: P0171 (Lean Run Condition)
2002 Pontiac Bonneville SE 3.8L Starting VIN: 1G2HX54KX2
Customer towed this vehicle in with no start condition, he informed us that it was bought from an insurance company that had totaled the vehicle. Car is in mint condition, customer informed us that lightning had struck either the car or close to it and it woul...
2000 Saturn SW2 1.9L Mechanical VIN: 1G8ZN82701
customer came in on 12/28/06 with brake pedal that would go to the floor. car would stop but could not lock up brakes. we blead system to no avail so we put on new m/c cylinder. seem to be better. customer brought car back this week and still not right. we reb...
2004 Saturn Ion-2 2.2L Front Strut Assemblies VIN: 1G8AZ52F64
Hay guys, I need your help. Five repair attempts at locating clunk, and no luck. Customer has been to the Saturn Dealer with no help.Tech assistance no help.If you have any ideas please let me know...Scott

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Regal LS 3.8L steering,suspension and BANK ACCOUNT VIN: 2G4WB55K52
thanks to all replied!all of you that said it was the bearings,ya'll hit the nail on head.replaced the bearings with ac delco bearings and all is good.thanks again!!!
1954 Chevrolet 3600 235CID signal lights
Hello friends,i would really like to thank all the members for taking there time to help.Wow i got alot of responses.Well after explaining to the customer how to use the correct hand signals,and my son thinking i had a broken arm or dislocated shoulder(after s...
1994 Chevrolet K1500 Suburban Silverado 5.7L Hesitation, LACK OF POWER VIN: 1GNFK16K3R
You know when you have done something really don't want anyone to find out! Well this is a really hard fix to own up to. Of 17 replys most hit fuel pressure right on the head. After the 200,000 miles of driving, it never occured to the owner o...
1996 Chevrolet C1500 Cheyenne 4.3L No Start, Misfire VIN: 1GCEC14W2T
Following The information sent I was able to check out most of the physical causes such as bad wiring,failed components. etc. I am leaning toward low fuel pressure as the guage it was tested with was found to be faulty and I have not be able to retest as I am ...
1997 Chevrolet Cavalier 2.2L ignition VIN: 1G1JC5241V
thank you for all the replies. the body shop couldn't figure it out so they did bring it over. i found that the wiring harness that runs alone the right frame had been hit and melted the wiring harness. about six to seven wires became one. lol anyway we have o...
1998 Chevrolet K1500 Cheyenne 5.7L Misfire VIN: 2GCEK19R8W
Hey, I think I'm on the right track,checked for an internal vacuum leak as Mike from Michigan suggested,it's got full manifold vacuum in the crankcase with the pcv system unplugged.I will start by replacing the intake gasket,watching closely at the troublesome... Trouble codes: P0141 (02 heater), P0300 (random missfire).
1998 Chevrolet Prizm 1.8L drl control module VIN: 1Y1SK5283W
thanks for all whom took time to read and respond with very useful info. we found several areas with loss of ground under heavy load only. test light was not a good test and voltage drop was a challange since module would last less than 5 seconds after plugged...
1998 Chevrolet K1500 Cheyenne 5.7L abs VIN: 1GCEK19ROW
Thanks for the replys. We did swap tires to no avail. Determined that either the lower gears or larger tire wheel combo were causing wheel speed difference. Sent him to 4 wheel world to see if they could help him.
2001 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on VIN: 1GCEC14W31
performed a intake system flush. problem cleared up and mil has not returned. thanks to all techs out there for the great advice. jason Trouble codes: P0300 (random cylinder misfire).
2003 Chevrolet Astro 4.3L Misfire VIN: 1GNDM19X43
i replaced plugs, cap, rotor,& wires with delco parts. misfire is gone but customer will be back if it starts again. we will wait & see. thanks for all who replied for the great advice
2003 Chevrolet Malibu 3.1L MIL Lamp on VIN: 1G1ND52J23
Well the Malibu is fixed. Thank you for all the help requests. The problem turned out to be the transmission range sensor. We installed the part and sent customer down the road. Thanks again! Trouble codes: P1815 (Transmission range sensor malfunction).
2003 Chevrolet Trailblazer North Face 4.2L battery VIN: 1GNDT13S83
Sorry for the late posting but I was hoping to get the vehicle back to do some of the tests and check some of the ideas that everyone had. The owner didn't want to spend anymore money unless I was sure I would find the problem!! Sure would be nice to be able t...
1997 GMC C1500 Sierra SL 5.7L MIL Lamp on VIN: 2GTEC19R8V
I recently replaced the converter and no problems since. Thanks for all of your help.
2000 GMC Sierra 1500 SL 5.3L No Start, Poor Idle Quality, Stall VIN: 1GTEK19TXY
First of all thanks for all the help i received for this problem. This has been an intermittent problem for the last six months according to the owner. The fuel pressure wasnt a problem it was always within spec but we did find that at start up it would allow ...
2004 GMC Yukon XL 1500 SLE 5.3L oil pressure VIN: 1GKFK16T94
The customer is not sure that the guage didn't read this way before . I have saw the guage on another vehicle a 05 pickup with a 5.3 and it reads the same. I now feel that it is ok with this high oil pressure. Thanks to the tecks for the help and replys Dale
2005 GMC Yukon XL 1500 SLT 5.3L stubby shaft VIN: 3GKFK16T45
Thanks for your replies. You all were on the right track, but this one was a difficult one. I think Rob has a good point when he suggests first striking the flange inwards towards the differential before attempting hamering out or using a slide hammer. I have ...
2004 Pontiac Sunfire SE 2.2L Cuts out, Stall VIN: 3G2JB52F34
first off i'd like to thank everyone that replied,sometimes you just overlook something or get a fresh idea on the problem.i did get some very good professional intermittent problem like this can drive you crazy as it never happened for me and only onc...
1998 Saturn SL1 1.9L MIL Lamp on VIN: 1GBZH5281W
thanks for the help freinds, i manually tested the vent solenoid with no troubles. unable to check the canister or the vent solenoid hose completely with out removing fuel tank i posted for help. i had 5 replies. 1 was possible intermittent faults with vent so... Trouble codes: 90446 (vent solenoid fault).
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