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Prev Professional Automotive Repair Technical Discussions for April 15, 2011
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Open Help Requests for GM
Help Request Answers
2001 Chevrolet S10 Xtreme 2.2L MIL Lamp on VIN: 1GCCS14511
This vehicle came in with a code P0440 found gas cap o-ring very cracked up - Replaced w/OE, and cleared codes. Returned 3 days later with same code P0440 EVAP sys. fault. Started Mitchelle DTC P0440 flow chart, Visually good, tested purge and vent solenoid/va... Trouble codes: P0440 (EVAP system fault)
2005 Chevrolet Silverado 2500 HD LT 6.6L Hesitation VIN: 1GTHK39275
this truck makes all the air gushing sounds heard when a turbo is not working properly. problem does go away at times and gets worse at times. any ideas Trouble codes: P0046, P0101, P0234, P2563
2005 Chevrolet Corvette 6.0L key fob VIN: 1G1YY24U55
I'm trying to add a key fob to this 2005 Corvette. I only have 1 working key fob and trying to add a 2nd. I'm in Canada. There is a slightly different set of instruction for programming these in mitchell. When selecting from the module list under SPS programmi...
2005 Chevrolet Silverado 2500 HD LT 6.6L theft deterrent VIN: 1GCHK29215
checked all grounds-ok,checked comms to all systems-ok. no faults in bcm,ipc, just p0670 in pcm. checked door using snap-on modis to check and feel it lacks alot.pcm shows fuel disabled due to vtd active. checked ignition key state and start,run,...
2007 Chevrolet C5500 Kodiak C5C042 6.6L Misfire, MIL Lamp on, low power VIN: 1GBE5C1247
Hi guys. Its been a long time since I put in a request, but I get alot of help from this site with the posts! I am needing help on this Duramax. This is one of my towing companys truck which he bought used and has had a history of problems with the injector ci... Trouble codes: P2146 (Injector positive volts Group 1 14 cylinders)
2007 Chevrolet Silverado 3500 Classic WT 6.6L No Start VIN: 1GCHK33D97
hey guys this truck wont start,but it acts like it wants to start.i can clear the p0341 code and crank and the code comes back instantly.i have followed the alldata flow chart and according to it i dont have a wire problem.i have good v-ref,ground and signal a... Trouble codes: P0341
1992 GMC C2500 Sierra SLE 5.7L 1-2 shift VIN: 2GTFK29K1N
Driving down the expressway 70mph when suddenly the trans. appeared to go into neutral. NO slipping or unusual noises - I pulled over and realised that I have only 1st & reverse. Any ideas what I should check?
1995 GMC Sonoma SL 4.3L Poor Idle Quality, MIL Lamp on, Runs very rough VIN: 1GTCS19Z4S
Thanks in advance. This vehicle was towed in for start and stall. When we first started the vehicle it did not stall, but it did run as if it had a missfire. Upon inspection we could see manifold gasket leaking externally, with cooling system pressure test and... Trouble codes: 43 (Esc module)
1997 GMC K2500 Sierra SL 5.7L Entire System VIN: 1GTGK29R6V
Hey everyone, I got this truck in almost a week ago and am pulling out my hair. It came in with no brake pressure. Found the rear line had no fluid from the proportioning valve and had to change the calipers & wheel cylinders to bleed the system due to seized ...
2003 GMC Savana 3500 6.0L all electrical VIN: 1GDJG31U74
Thanks for the help in advance. Van was towed in for a no start customer wanted starter replaced. But when you turn key on all lights on instrument cluster cycle on then off constantly as long as the key is on. When you turn to the start position starter solen...
2004 GMC Yukon Denali 6.0L Ride control VIN: 1GKEK63U84
Hey guys, have 2004 Yukon Denali rear ride control not working due to rear shocks blown out. replaced rear shocks & compressor assembyl all with new G.M. parts. Now compressor will fill shocks all the way. service ride control light on, code c0660 level exhaus...
1998 Pontiac Grand Prix GTP 3.8L Unknown VIN: 1G2WP1213W
I have what I only can describe as "wheel hop" which only happens on medium to heavy acceleration from a stop. Accelerating at normal traffic speeds from a stop and there is no problem felt. I had a bad motor mount by the crankshaft pulley which I replaced and...
2002 Saturn Vue 3.0L 2-3 shift VIN: 5GZCZ63B02
Vehicle came in with a 3/4 flare. The fluid was quite dark and the used car dealer that sent it wanted to try a flush and seal conditioner. After doing it, we lost third gear completely. If we got going fast enough, it would go to 4th and 5th and lock up. The ...
2006 Saturn Ion-2 2.2L radio VIN: 1G8AL55F26
Hi everybody! What we have is a new customer, his Saturn Ion 2 was towed in with a dead battery. We were told that he has been in Florida for 6 months and just got home. He said he went out to start his car and all it did was click, he came out later and tried...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Cadillac Seville SLS 4.6L Misfire VIN: 1G6KS54Y61
Got it fixed. Had to take it to my local Caddy dealership for diagnosis. All twenty replies were off the mark on this one. It was the bank 2 sensor 1, wrong voltage at hot startup. Aparently this sets no codes, but fouls up the open/closed loop operation, ... Trouble codes: P0300.
1997 Chevrolet K3500 5.7L Fail Safe Mode VIN: 1GCHK34R2V
Okay. I know it took a while for me to close this but I wanted to make sure it was out the door...for good. The input sensor was the fix. I guess I never even considered that would cause a problem being that it checked out on my meter. But then I decided t...
2003 Chevrolet Tahoe LT 5.3L Rear hvac VIN: 1GNEK13Z13
Went through the re-calibration procedure, this reset the rear unit back to operational specs and it began to work properly
2004 Chevrolet Malibu LS 3.5L No Start VIN: 1G1ZT64864
Hello Vehicle went to the local dealer as the computer is a warranty part . We allowed them to diagnos the car . They came back saying a computer was the fix . After they replaced the computer it still did not start . They tried a BCM figuring it was a secur...
1999 Oldsmobile Silhouette GL 3.4L A/C Fuse VIN: 1GHDX03E1X
Thanks to all that helped. Customer decided to replace compressor and the problem is gone. Comressor clutch was drawing almost 8 amps. Thaks guys.
2005 Pontiac Bonneville GXP 4.6L Abs/Trac VIN: 1G2HZ54Y85
All replies I got wer valid tests and I apreciate the help guys! It did turn out t be the EBCM. Wiring and sensors checked out well and the data suggested the speed went up on the one wheel almost ruling out an open. I suspect a bad solder joint in the EBCM as...
2006 Pontiac G6 2.4L interior lighting VIN: 1G27G55856
this vehicle came back at the being of this week to complete the diag on the electrical problem.after a week of on and off again tracking wires i am happy to report we have a fix.this vehicle is a drive time car and goes thru there recon center before ...
2006 Pontiac Torrent 3.4L abs VIN: 2CKDL73F06
Thanks for the help. Went back with my scanner and graphed wheel speed sensor data. Left rear sensor dropped out at just below about two mph. Replaced sensor and have a happy customer. Thanks again for your help, I guess I should slow down A bit
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