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Prev Professional Automotive Repair Technical Discussions for April 25, 2009
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Open Help Requests for GM
Help Request Answers
1998 Buick LeSabre Custom 3.8L Stall VIN: 1G4HP52KXW
Customer complains of intermittent stall. Starts again, but sometimes it starts hard.Scan tool shows a couple things I'm concerned with.LTFT sometimes at -20 or more. MAP sensor voltage .6V on scan tool yet a backprobe to the pcm connector shows 1.7V. ALLDATA ...
1993 Chevrolet C3500 Cheyenne 7.4L Hesitation, MIL Lamp on VIN: 1GCHC39N2P
This is the first time Ive seen this truck. Customers concern is occasional loss of power while accelerating at highway speed, Like to pass. Sometimes he will tip into the throttle to pass, the trans shifts down and no power to pass. Here is the weird part. tr...
1994 Chevrolet joy 2.2L No Start VIN: YV1LSW59AB
This is a mexican vehicle, as best as I can find, an Opel corsa, vauxhall corsa and or Chevy joy. I am an american tech, trying to do a good job. There is no power to the fuel pump, if I power the fuel pump, it runs, the fuel pump, but still does not start, ar...
2001 Chevrolet Blazer LS 4.3L sun sensor VIN: 1GNCS13W41
Got a blazer with bcm codes for ac b408 b415 b16 did the relearn to temp control it works for a min the goes back the sun sensor reads 225 cant find any data on this or codes any help would be great thanks.
2001 Saturn L200 2.2L shift interlock VIN: 1G8JU52F41
Customer couldn't get vehicle out of park. We towed in, tested solonoid and found it to be bad, Ordered solonoid and installed, still can't get it out of park, new solonoid works when commended with tech2. PCM sees signal from brake pedal. We believe the BCM i...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet Lumina 3.1L Stall, incorrect rpm VIN: 2G1WL54T6P
Sorry it took me so long to get back with an answer on this one. After getting back on the car on monday and running the car for awhile I found that the car had a headgasket going out. This was not the cause of the strange RPM readings but I could not see putt...
2000 Chevrolet C3500 5.7L engine VIN: 1GBGC34R6Y
thanks for the help .customer did not want approve service to repair at this time. some of your replies help fixed all codes but proplem still there.willpost when customer has us repir veh. thank you steve
1989 Oldsmobile 98 Regency 3.8L Hesitation, Stall, MIL Lamp on VIN: 1G3CX54C9K
First, thanks to everyone who took time out of their day to read and write back. Either I wasn't clear or not everyone reads the whole message before replying. From the info, I stated that the CAM sensor signal to the computer is the issue. THE ONLY ISSUE. Whe... Trouble codes: 41 (cam sensor signal).
1996 Oldsmobile REGENCY 3.8L elec cooling fans VIN: 1G3CX52K67
intermittant problem not fixed. this is my wife`S PERSONAL VEHICLE. Have no power to fans-relays etc intermittnt, also windshield wipers faild to operate on one occasion. I have checked ALL FUSES none defectiive. removed and swapped relays-no help. voltage to ...
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