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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 12, 2004
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Open Help Requests for GM
Help Request Answers
1993 Chevrolet K1500 Cheyenne 4.3L engine VIN: 1GCEK1429P
hey all you custom guys out there. I have a 93 1500 pickup with a 4.3l v6 that I would like to tear out and replace it with a 350. I realize I'll also have to do the trans, but I'm looking for a website or just general info on how to go about making this conve...
1999 Chevrolet Express 2500 5.0L Poor Idle Quality, Hesitation, Stall VIN: 1GCFG25M9X
Hey Guys, This '99 Express 5.0L will run rough/idle low/almost die when you start it cold and after about 1 minute of running this way it'll idle up to about 3000 RPM's and hold there until you shut it off. If you let it run this way long enough for it to get ... Trouble codes: P0152 (o2 bank 2 sensor 1 signal high), P1106 (MAP signal intermittently high)
1999 Chevrolet Silverado 1500 5.3L Differential VIN: 2GCEK19T0X
service 4 wheel drive light on intermitant will loose 4 wheel capablity please send me in the right direction to diag and repair thanks nick [...]
1999 GMC Jimmy SL 4.3L day time running lights VIN: 1GKDT13WX2
drl will turn off when you operate turn signals in either direction or use the hazards and will come right back on when you turn the signals or hazards off.

Fixes & Summaries for GM
Fix/Summary Answers
1998 Chevrolet K3500 Cheyenne 6.5L Excessive Emissions, Misfire VIN: 1GTHK33F6W
Well thanks to all who replied. The problem was a broken #4 exhaust valve. The valve has a stellite seat and it broke off around half of the valve face. Goerge from ohio steered me in the right direction to focus on #4 cylinder injector, by looking more carful... Trouble codes: P0304 (missfire cylinder 4).
1997 Pontiac Grand Am SE 2.4L Excessive Emissions, Misfire, MIL Lamp on
Thanks for all 11 replies!Yes there is a new calibration(flash) to correct an EST problem.Olso relaxes misfire diagnostics to prevent false setting of [...]. Trouble codes: P0300.
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