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Prev Professional Automotive Repair Technical Discussions for August 22, 2012
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Open Help Requests for GM
Help Request Answers
2003 Buick LeSabre Custom 3.8L High RPM VIN: 1G4HP52K93
I have a problem with a high RPM after the engine warms up. The idle speed is high in gear or with the A/C on. When idle is steady I can controll the idle speed with the IAC functional test. After warmed the idle speed sits between 900-1100 RPM and can fluctua...
1968 Chevrolet Camaro 6.5L engine VIN: 124378L311
Hey all, I got a fun one here. We have a customer who is making a '68 Yenko Camaro clone car and he was having engine problems with it. THe engine is a factory correct'68 427. It has square port heads, factory aluminum intake, factory Holley carb, factory exha...
2000 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1GCDM19W4Y
The new distributor was installed 8 months ago and it was running good then, 0 CMP retard according to notes. Customer stated that the recent issue happened all of a sudden at a stop light. This van came in with a misfire and P0300, a problem it had before. T... Trouble codes: P0300
2002 Chevrolet Trailblazer LS 4.2L Cuts out, MIL Lamp on VIN: 1GNDT13S02
Hi guys. This was on a post I thought I had fixed. Intermittent ses light combined with pedal position sensor problems resulting in power loss mode. I found out about the fan clutch problem spiking and replaced it. Seemed good for a week and came back. Warrant... Trouble codes: P1271, P1275, P1280
2003 Chevrolet Silverado 3500 8.1L Fuel Gauge VIN: 1GBJK34G33
Hi Guys, I don't post very often I usually just read other folks posts & fixes. This one I can't get done and need some help please. This truck came in, no start. Checked fuel pressure no pressure,I jumped fuel pump relay pump won't run so I changed the pump. ...
1998 GMC Sonoma SL 2.2L 4th gear VIN: 1GTCS1446W
hi guys, I am not a transmission specialist by far and am trying to find the problem on my truck to no avail. When i am on the highway cruising at a constant speed and the throttle is steady (10- 20%), the truck will shift into 4th gear and then slip out to 3...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal GS 3.8L No Start VIN: 2G4WF5213X
Some replies said to reckeck all powers and grounds which I had already done. Others said to ck. the wiring and recheck my techs work to see if he caused the problem. Again I had already checked and ruled these possibilities out. The responses that said yes, t...
2002 Chevrolet Silverado 2500 HD 6.6L Compressor Inop VIN: 1GCHK23132
Thank you for the help but the truck still is broke. My friend has been to busy to go back and get the computer re-flashed. Come to find out it was only 2 weeks since he had the flash done. I am confident it is ecm related. I will try to update when he gets th...
2004 Chevrolet Colorado LS 2.8L MIL Lamp on VIN: 1GCCS19844
So I called him a 3rd time last week and he said that he had looked at the blower not working before washing and changing filter. He pulled each fuse 1 by 1. so I checked codes again and a p1682 popped up. I then went to Blue connector PCM and checked Pin 20, ... Trouble codes: P2101 (Control Module Performance), P1516 (Tac Module Performance).
2002 Pontiac Sunfire SE 2.2L cluster, headlts & a/c VIN: 1G2JB124X2
Ckd everything and found that customer had removed grd cable at bat tray when he changed cables. I didn't see the hole where it went because of the corrosion. I ckd all the connections under tray, column frame and trans area. I put some scratch washers under t...
1997 Saturn SC2 1.9L Mechanical VIN: 1G8ZG1273V
Hey all thanks again for the replies and all the info, i think this will be helpfull to others who are having issues with these saturn engines which we all know have there problems. The primary concensus is these engines are great but need to be taken care of...
2003 Saturn Vue 2.2L Pcm VIN: 5GZCZ23DX3
I would like to thank everyone for their help with this saturn. I did some more research and found the Body Control Module to be the fault. I learned that the BCM is the module that all the data has to pass thru to get to the DLC there for my loss of communica...
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