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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 21, 2013
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Open Help Requests for GM
Help Request Answers
1987 Buick Regal GNX 3.8L master cylinder VIN: 1G4GJ1174H
We did a power master brake system to vacuum booster conversion for the brake system (master cylinder, booster, pedal and manifold block). Our issue is, on the original power master system there is a pressure switch and a electronic module. The conversion kit ...
1988 Buick Regal Limited 2.8L No Start, Stall VIN: 2G4WD14W6J
This customer came in and said his car stalled getting on the highway but it restarted and he drove right in. (a%bout 5 miles to our shop) He wanted to change the fuel filter and it turns out it was leaking so we changed it and as I was checking for leaks the ...
1988 Chevrolet C1500 Silverado 5.7L 1-2 shift VIN: 1GCDC14K6J
This is my vehicle and I recently rebuilt the trans in this thing. It's a 700R4 without the aux. valve body and what occurs is it will shift to 2nd and under light throttle it make a weird grinding type noise which I assume is clutch chatter. If you are under ...
1991 Chevrolet K1500 Cheyenne 5.7L 1-2 shift VIN: 1GCDK14K2M
Truck came in with a leak from pump and late 1-2 shift also a very hard shift to second. Pulled trans to reseal and put a shift kit in valve body. Now we have a very early shift to second at about 2mph it will drop to 1st manualy but takes off in second if you...
1999 Chevrolet C3500 6.5L Abs & Trans VIN: 1GBJC34F6X
This is driving me nuts. Keep getting code c0237 rear speed senor . Replaced speed sensor and new act right up , tried several speed sensor from know good trans and still code c0237 pop up, trans shifts in and out of passing gear. I thought I solved this the o...
2001 Chevrolet Blazer LS 4.3L Turn Signals VIN: 1GNDT13WX1
Vehical has no right turn REAR signal or brake light on Right rear only. Signal flasher flashes very rapidly. Left side flashes normal. Fuses are good and test light @fuse flashes fast. Trailer connector is good and flashes test light Fast. I suspect a grounde...
2007 Chevrolet Suburban 1500 LTZ 5.3L Axle seal VIN: 1GNFK16337
Front, left axle seal leaking. Original visit found stub shaft pitted and chewing seal. Customer in a hurry and could not wait to obtain replacement shaft. We cleaned up shaft and replaced seal. One month later shaft seal leaking as we thought it might with th...
2008 GMC Acadia SLT 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKER33708
When idling for the first minutes it will be fine. #2 will start to misfire. if i bring the engine off idle (1500 rpm) the miss goes away. When brought back to idle it comes back. When i disconnect #4 coil the misfire will stop on #2. The last repair shop repl... Trouble codes: P0300 (Engine misfire detected)
2002 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NF52E12
no spark and no injector pulse, good fuel pressure, crank signals working and theft system seems to operate properly.security light goes off when cranking . have even tried relearn key .will start sometimes and runs great. most of the time just cranks with no ...
2008 Pontiac Grand Prix 3.8L No Start
Thanks in advanced for all your response.. Havent got the chance to do a full diagnostic yet on this vehicle , would like to get as much information possible before i look more into it. Okay here we go! vehicle towed in , checked fuel pressure (normal 55psi), ... Trouble codes: P0520 (Engine oil pressure sensor signal circuit)
2000 Saturn SL2 1.9L SIR, BCM module VIN: 1G8ZK5275Y
Called in to program new BCM on 2000 Saturn. Programming appeared to be successful, did relearn, car started, shifted out of gear, and drove. Windows, lights, ac, radio and ipc worked...except odometer reading was 0000000 and air bag light was on. Called AC De...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet S10 LS 4.3L Brake Lamps VIN: 1GCDT13W01
Thanks for the replies guys. I cant say for sure if the vehicle had other repairs done before me. Everything looked in place and every harness I took apart looked to be untouched.
2005 Chevrolet Classic 2.2L No Start, Stall VIN: 1G1ND52F95
Thank you all for your input especially those familiar with the anti-theft system. Unfortunately the customer declined further diagnostic so I was unable to pinpoint anything further.
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