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Prev Professional Automotive Repair Technical Discussions for December 21, 2011
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Open Help Requests for GM
Help Request Answers
2006 Buick LaCrosse CXL 3.8L Whining in drive/neutral VIN: 2G4WD58226
So this vehicle has been to us since it had 32,000 miles. We have done all the maintenance, oil changes, tires, oil leaks, etc, but he missed his tranny service. About 10k ago, customer noticed a whining coming from vehicle at park. We told him we can diagnose...
2005 Cadillac CTS 3.6L stability control VIN: 1G6DP56795
neighbor car has a c0461 code and a message in message center "service stability control" the code is for a steering angle sensor and I have not done one of these before and alldata and identifix how to seems vauge im looking for any help on how to swap this "...
1998 Chevrolet S10 LS 4.3L slips after kick down
after kick down this truck is in coast till the throtle is lifted to idle, can bang on the rev limiter til you lift. trans rebuilt, new converter, all new electrics, new valvebody.
2000 Chevrolet Express 1500 4.3L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1GCFG15W9Y
Truck came in barely running and stalling. Found fouled plugs, corroded cap and rotor. Also p0107. Replaced cap rotor plugs and map. No real change then notice pcm looked like giant ball of corrosion. Transfered eprom to reman pcm completed vtd relearn and cra...
2002 Chevrolet Monte Carlo SS 3.8L Engine VIN: 2G1WX15K42
Vehicle had a complaint of hard starting so we tested and replaced the fuel pump and filter then checked the ect sensor and was out of specs. So replaced it still did not help then replaced plugs and wires did not fix. Cleaned the throttle plate out and still ...
2002 Chevrolet Silverado 2500 6.0L Steering VIN: 1GCHK29U22
Thanks in advance for any replies...they will all be helpful!! The truck has developed a whine in the p/s system. It has hydro-boost...Customer states it is quiet in the morning while cold, which i did confirm. While watching the fluid in the resevoir, at full...
2004 Chevrolet Silverado 2500 6.0L Transfer Case VIN: 1GCHK24U14
Vehicle has a driveline speed vibration feel and sound coming through transfer case. Vehicle has 261 model transfer case with manual engagment shifter.When driving the vehicle there is a vibration you can feel in truck and grinding howling noise noise starts a...
2005 Chevrolet Uplander 3.5L Stall, theft light on VIN: 1GNDV03L25
ok im reposting this as customer came in saturday complaining theft deterant light always on but car is starting.customer made appoinment for later this week but after leaving here vehicle stalled at a drivethu window but restarted fine.also states intermitant...
1996 GMC Sonoma SL 2.2L Excessive Emissions, Poor Idle Quality, Surge VIN: 1GTCS1440T
Could someone help me on this, its really being a tuff one. The truck has a lopey idle, and if you open the throttle it will kind of stall out. I found the brake booster hose with a huge crack in it and a vacume leak, I thought for sure this would fix it but i...
2003 GMC Yukon Denali 6.0L radio VIN: 1GKEK63U93
Can somebody help me fix the radio on this 03 Yukon Denali? From what I can tell, it's a digital radio with cassette and CD. The lights turn on, the clock turns on when you push the display button, and it tries to eject a disc when you push the eject button. I...
2004 GMC C5500 Topkick C5C042 8.1L Hesitation, Cuts out, Stall VIN: 1GDG5C1E14
Got a new one for me here and having problems finding information.. a shop in town called me in.. they got in two of these trucks to convert from propane to gas..they removed the propane equipment and installed all new fuel rail and injectors...i found 2 elect...
2003 Saturn Vue 2.2L No Start, MIL Lamp on VIN: 5GZCZ23DX3
First time post for help so bear w/ me. After engine replacement, car ran couple seconds and no restart. Codes occured, electronic throttle by wire throttle body assy gets very warm/hot with key on. Checked for possible pinched wires in harness or something in... Trouble codes: P0107 (Map Baro Low), P1120 (Tps 1), P1220 (T P Sensor), P1681 (Driver 5 Line 1), P1635 (5v Ref Low), P1515 (Electronic throttle)

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Park Avenue 3.8L Vents VIN: 1G4CW52K0T
Thanks to everyone that answered me on this , I think every single answer was right, it was a vacume leak. I could not find the canister so I did not think it had one until someone mentioned it was behind inner fender panel under the battery. Once I took the i...
2001 Chevrolet Silverado 1500 5.3L dash lights VIN: 1GCEK19T31
the customer had an add on accessary power and ground feeds in junction box. one of the wires was shorted to an unused pin that went to dimmer lighting circuit. Thanks for all the help. I guess I assumed that with 10 amp fuse inact there would not be a short b...
2004 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13Z64
Never found any problem with purge or vent solenoid on this. Of the 9 replies, there were as many different opinions. Evidently the charcoal canister tends to fill up with dirt and cause this problem, as well as the FTP sensor had a few mentions. Ended up r... Trouble codes: P0446 (EVAP Vent performance).
2004 Chevrolet Optra 2.0L No Start VIN: KL1JD52Z94
The car is fixed. Thanks for the help guys especially David from Massachusetts and Alvaro from Aruba for the wiring diagrams and the heads up on the TPS , and MAP sensors. It was a MAP sensor that cured the problem. I am not quite sure why the MAP sensor had s...
2006 Chevrolet Silverado 1500 LT 5.3L Stall VIN: 1GCEK14Z96
It was suggested to tap into the P/S switch or A/C switch to increase the idle or to install a aftermarket kit (which the customer did not want). The '06 1500 does not have a P/S pressure switch and I felt trying to tie into the A/C request would have unwanted...
2007 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: SCREAM1NG7
This was not my best help request , but people were helpful regardless.Several knowledgable tech's explained the Bank 2 PIDs as being default figures, and that I needed to compare fuel trim numbers at idle and cruise, possiblly verify scan tool data with anoth... Trouble codes: P0171, P0420.
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