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Prev Professional Automotive Repair Technical Discussions for April 2, 2012
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Open Help Requests for GM
Help Request Answers
1994 Buick LeSabre Custom 3.8L Cuts out, Stall VIN: 1G4HP52L2R
Hello IATN, I have fiddled with this car for 2 or 3 days on and off. I am going to take a break from it and see what you guys think. I would like to see if i'm on the right track and what you all would recommend i do. OK. Car comes in for shutting off interm...
2004 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54KX4
Hello gents - i have this buick that has me scratching my head. Mil light is on with codes p0442 and p0455 and message on instrument cluster say "check fuel cap/fuel cap loose." need to get this car a state inspection and will not pass with mil on. No other s... Trouble codes: P0442 (Evap emission small leak detected), P0455 (Evap emission gross/large leak detected)
2001 Chevrolet Silverado 1500 HD LS 6.0L ecbm VIN: 1GCGK13U51
abs & brake light stay on in dash. performed diagnostics according to code using alldata & the ecbm seems to be at fault. the customer replaced ecbm with used unit from salvage yard. we also performed voltage drop test on power & ground to ecbm, used a headlig...
2005 Chevrolet Corvette 6.0L reverse VIN: 1G1YY34U25
there are two back-up light switchs on this manual trans. need to know what both switchs are for no info in mitchell
2007 Chevrolet HHR LT 2.2L Misfire VIN: 3GNDA23DX7
We need to do a valve job on this engine. I have never had one of these engines apart.It looks like it has a timing chain that needs to be dealt with when removing the head. Any one have any information on doing this job? Any tips, warnings etc...? Thanks!
2007 Chevrolet Suburban 2500 LT 6.0L abs VIN: 3GNGK26K27
Getting a C0055 rear speed code while driving, problem is fairly consistent but does have to be driven. This Suburban does not have rear wheel speed sensors, EBCM gets input from PCM via the VSS. Speedometer works fine, no VSS codes. Also not getting ABS data ...
1998 GMC Yukon SLE 5.7L MIL Lamp on VIN: 1GKEK13R1W
this yukon came in with several problems,well all of them but one was i able to fix.I thought this one was fixed.AFTER DOING the test on aldata it lead me to replacing the fuel sending unit,so I replaced the whole fuel pump with a oem pump and it seem to work ... Trouble codes: P0463
2001 GMC Yukon SLE 5.3L Poor Idle Quality, Stall VIN: 1GKEC13T21
This Yukon came in with a complaint of intermittent rough idle and stall with AC on. No codes and all looks good on the scanner except for desired idle. At one time it reads ok then changes to 0 and stays there. Thats when the problem comes in. The air and coo...
2010 GMC Sierra 2500 HD SLE 6.0L No Start, Cuts out VIN: 1GT4K0BG9A
I have this 2010 GMC 2500 6.0L gas that will quit just like you turned off the ignition. It then will not turn over. It happens once a week or so. When it won't start all lights work properly (dash indicators and exterior). It will start back up at any time, c... Trouble codes: P0601 (Read only memory failure)
2003 Pontiac Grand Am GT 3.4L Cuts out, Stall VIN: 1G2NW12E73
This grand am has a very intermitent stall. When it does do it the car acts like the key was shut off. It happened twice on a test drive and both times the whole car went dead then came back on a second later. All gauges and lights in dash went out and came ba...
2001 Saturn SL 1.9L Poor Idle Quality, MIL Lamp on VIN: 1G8ZF52891
Hi everyone. I have a 2001 Saturn SL with a 1.9 Sohc. I am not very familiar with this evap system; I'm used to the german LDPs. None the less, it makes good sense to me. I am just a little unsure of how this engine should react when I command the Purge soleno... Trouble codes: P0442 (Evap Small Leak Detected), P1599 (Engine Stall / Near Stall Detected)
2003 Saturn L200 2.2L Condenser Cooling Fan VIN: 1G8JU54F83
Hi, every one. This saturn l 200 came in with a/c not blowing cold. Problem was due to hole in condenser and loosing freon. We installed new condenser and charged the a/c system . Ecm read the command for a/c , compressor comes on a/c relay on ,according to s...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Impala LS 3.8L no start VIN: 2G1WH52K93
thank you to everyone that replied, the customer decided to go with the ignition key and switch assembly as we suggested.since this was an interrmittent problem, it was never duplicated and nothing seemed broken when taken apart. at this time it hasnt come bac...
2005 Chevrolet Impala 3.4L engine VIN: 2G1WF52E95
Thanks for all the help. I found that the TPS would show .59 but 4% load at idle when reving on its own. But would show .59 0% load when idling normal. I replaced the TPS sensor and has been running fine.
2006 Chevrolet Impala LT 3.5L Hesitation, Surge VIN: 2G1WT58K16
What we found out was that the cam phaser was causing the problem. It was at the GM dealer and the customer was told by them it was the tcc causing the surge. I went in and disabled the cam phaser by disconnecting the plug at the front of the motor which is th...
1989 Oldsmobile 98 Regency 3.8L high idle VIN: 1G3CX54C8K
thanks to all for their input,sorry took so long to reply. i only had the car for a day and forgot i had posted a help request. I sprayed everywhere for a vaccume leak even in the valve cover,still nothing. iac count stayed around 22 when idling and would only...
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