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Prev Professional Automotive Repair Technical Discussions for April 15, 2008
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Open Help Requests for GM
Help Request Answers
2001 Buick LeSabre Custom 3.8L Cuts out, Stall VIN: 1G4HP54K41
Cuts out at highwway speed hot only... Hello all. This is the most indignant car i've worked in in many years. Symptoms are as follows; At 55-75 MPH with absolutely no warning the engine quits as though the key was turned off. Not been able to establish a patt...
2000 Cadillac Escalade 5.7L Door Seal VIN: 1GYEK63R5Y
We have a 2000 Escalade with 2 rear doors. There is a leak at the seal between the top seal and the center of the 2 doors. Did some research and found a TSB that recommended installing new updated weather strip. Installed new weather strip and it still leaks...
2003 Cadillac Escalade ESV 6.0L ride control VIN: 3GYFK66N93
thanks in advance.this vehicle came to us with the service ride control displayed . we do not have power to the ride control motor . we have snap on scanning equipment that does not respond to this system. does any one know where to start or a common problem ...
1994 Chevrolet Camaro 3.4L No Start VIN: 2G1FP22S9R
Hello there GM geeks! I was called into this mess after several others had made attempts to repair this no-start. Upon initial inspection, found no MIL when key on, and no communication. Inspected powers and grounds at PCM, found ignition feed OK, but KAM B+ c...
2000 Chevrolet Venture 3.4L radio VIN: 1GNDX03E0Y
Today was going great, we all know how enjoyable it is to install a battery on a Venture. I put my "keep alive" memory keeper in the cigarette lighter. After the battery installation, the radio still gave me a lock out. What gives with these things? How to get...
2000 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55K6Y
Hi this post is for a friend,car was running fine ,but had a cracked flywheel! He said that all did was to unbolt engine and lifted it enought to put the flywheel in,never un-did any of the wiring,nowthe car try tostart it may cough back thur the intake or it ...
2000 Chevrolet Silverado 1500 5.3L Poor Fuel Economy VIN: 1GCEK19TOY
Customer Has recently Purchased This Truck Aprox 5000 Miles Ago System has No Codes Wave Form on The Oxygen sensors Seems To Be Good Most Of The Time and Then The Bank 2 sensors Will Start To Go Way Down and Then Way Up Have Trapped many Movies On the Geniysis...
2001 Chevrolet Silverado 1500 HD LS 6.0L Cuts out, Stall, Misfire VIN: 1GCGK13U31
Good afternoon, i have a 01 chev 1500 hd with a 6.0 that came in for a misfire at highway speed and intown driving. Connect my solas to perform a misfire moniter and found the misfires are all over the place but mostly on 4,6,3. Parked the vehicle and went hom...
2001 Chevrolet Impala LS 3.8L Dr. door lock VIN: 2G1WH55K91
I'm working on this car for friend of mind who bought it from a car lot I do some work for. The driver door does not unlock or lock with the remote or the inside button. It works fine with key or lever. I've replaced the actuator with no luck so I switched the...
2003 Chevrolet Corvette 50th Anniversary Edition 5.7L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G1YY32GX3
I was brought into this repair by my brother who is a GM tech. with about 2 decades of experience. The car can be made to misfire in the bay by power braking. Power balance test revealed cyl. #2 was a consistent misfire. The misfire starts at about 1400 RPM. A... Trouble codes: P0300 (Random Misfire)
2005 Chevrolet Trailblazer LS 4.2L encoder motor VIN: 1GNDT13S35
hello neighbours, trail blazer came in 4x4 light on scanned found encoder motor circuit problem, removed motor and manually tried to move it by supplying power and ground,didn't work ordered new motor (dorman) installed it still light on same code removed moto...
1995 GMC Yukon 5.7L No Start VIN: 3GEKE189KS
hey techs im stummped i put a new cam lifters push rods head gasket oil pump and pan gasket i have good fuel and spark i fired it off base timed it and started to break in the cam every thing was perfect for 15 min then the motor just died out now it seems lik...
2000 GMC Sierra 1500 SL 4.8L runs lean VIN: 2GTEK19V7Y
i just swapped the 4.8l out, and put in a 6.ol vin-u. in order to make it run correctly i need to put the 6.0l tuneup/program into my computer. i talked to gm and they dont seem to know what to do or if they even can. is there any aftermarket systems you can b...
2000 GMC Jimmy Diamond Edition 4.3L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 1GKDT13W7Y
Looks like my time to get headaches! This Jimmy came in with a loss of power and stalling problem. It had 56 psi and no volume from the fuel pump when running; no brainer replace pump and filter and send it on its way right, WRONG. Took it out to test drive ... Trouble codes: P1122 (TP sensor circuit intermittant low voltage)
2002 Pontiac Aztek 3.4L radio-rear speakers, romote door locks, heated frt VIN: 3G7DB03E12
has no rear sound from back seat or very rear speakers. only front speakers in doors and front tweeters work. i check'd at the amplifier and if my diagrams are right i have signals. so i ordered a used amp and installed it and the same thing. this car has ster...
2006 Pontiac Torrent 3.4L hvac VIN: 2CKDL73F26
car has no heat at any time. It seems there is an air blend door, but I am not seeing any scan testing ability from my solus. also not finding anything in tech bulletins. Any knowledge of this system or help appreciated. thanks jim
2006 Pontiac Vibe 1.8L MIL Lamp on VIN: 5Y2SL65856
here is a troubling one for you. a 10,000 mile pontiac vibe with a lean code. maf and fuel pressure read damn near perfect. vacuum is great. no drivability issues, just a mil on. p0171 lean code and fuel trims positive through the roof. smoke tested intake, no... Trouble codes: P0171

Fixes & Summaries for GM
Fix/Summary Answers
1994 Buick Skylark Custom 2.3L Excessive Emissions, Poor Fuel Economy VIN: 1G4NV5534R
1990 Chevrolet G20 Sportvan 5.7L Stall VIN: 2GBEG25K6L
Sorry guys, all of your help so far has been put on hold until i can get the customer back in. She's afraid to drive the vehicle and as yet i have been unable to get the vehicle back. She doesn't want it to stall while driving nor does she have the auto club...
1997 Chevrolet Blazer 4.3L fuel guage VIN: 1GNDT13W2V
Thanks to all, special thanks to Troy from new brunswick. part number i requested and troy provided repaired vehicle as we knew it would. Note to all- original fuel sending unit was found to have wiper contacts broken off and was replaced prior to original pos...
2000 Chevrolet Cavalier 2.2L noise VIN: 1G1JC5246Y
Thanks to everyone that replied. John, the first thing I checked was TSB's in AllData, and don't know how I missed that, (My wife can tell you how I missed it, but we wont get into that right now) there it was LARGER THAN LIFE. I also assumed this noise was...
2000 Chevrolet S10 2.2L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCCS1953Y
Hello, vehile is fixed thanks to marty, and jim. they both hit the nail right on the head. the timing chain was off about 4 teeth. it was an easy job as others said it would be. many thanks to all who responded so quicky. Thakns again, Robert [...] Trouble codes: 300 (multipal misfires).
2002 Chevrolet Suburban 1500 LT 5.3L Dome light VIN: 1GNFK16ZX2
First off thank you all for your help, unfortunately the customer has been very busy and is not concerned about the dome lights right now. I believe the problem, as many said is in the programming. The dome light option was left off or the wrong information us...
2005 Chevrolet Optra 2.0L MIL Lamp on VIN: KL1JK59Z75
Took car to dealer for TSB for code 1884 and reflashed the ECM. Has been a few weeks not and no problems, so I think it's safe to say its fixed. Trouble codes: 0700 (trans control system), 1884 (manufactuer specific).
1994 Geo Metro 1.0L Exhaust Valves VIN: 2C1MR2465R
Well, this one isn't fixed as of yet. Disassembled head, and looking at the valve, it isn't burn't, it is broken. Not sure if it was a weak valve, but are trying to get this worked out through the place we purchased the head from. The edges of the valve were t...
1984 GMC C2500 5.7L Alignment VIN: 1CTCC24H8E
Thank you for the replies.. Typically SLA systems have between 6-8 degrees of SAI and MacPherson's have 12-14 degrees.. I needed to come up with a targeted Included Angle for diagnosis purposes.. Thanks again..Arne
2002 GMC Yukon Denali 6.0L Ride Control VIN: 1GK7K66U72
You can call this fixed, sort of, I found the left rear shock sensor connector rotted off of the shock. The customer needs rear shocks and after I hit him with the numbers, he's going to put it off for now.
2003 GMC Sierra 3500 6.6L Check engine light VIN: 1GDJC34163
Replaced front fuel tank sending unit as well as fuel transfer pump. Trouble codes: P2066 (Fuel level sensor secondary problem).
2001 Saturn LW300 3.0L odometer VIN: 1G8JW84R71
sorry for not closing this sooner i was sure that i did. anyways thanks to all that helped, it was a body control module and a flash. all things are working great now thanks
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