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Prev Professional Automotive Repair Technical Discussions for April 29, 2006
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Open Help Requests for GM
Help Request Answers
1995 Chevrolet Lumina LS 3.1L Excessive Emissions, Hesitation, Poor Fuel Economy VIN: 2G1WN52M8S
this one came in with the converter glowing cherry red...inspection revealed check engine light on code 17 ect low input, found ect unplugged , spoke with customer and found that he unplugged it because fan was not working?.. plugged it back in and tested work...
1999 GMC Sierra 2500 SL 6.0L engine VIN: 1GTGK29U7X
We recieved this truck and customer stated it heats up 240 in the afternoons. We could verify the complaint after a hard run. Check for combustion gasses in coolant tank-positive. So we removed they heads and checked for a bad gasket-looked ok. Had heads magna...
1997 Pontiac Grand Am GT 3.1L door locks VIN: 1G2NW52M4V
This problem is extremely intermittent, but has some bizarre symptoms. Three months ago the customer was accelerating on a cold engine and experienced a complete electrical shutdown, stalling the engine. They coasted to a stop and the vehicle restarted with th...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet Blazer 4.3L Hesitation VIN: 1GNCS13W5T
Thanks for all the replies.Most everyone agreed to what I had suspected,bad fuel pump.After replacing the pump,fuel pressure came up to specs.which is 60-65 psi.On these later model 4.3 the injectors can be changed indualvidally.Thanks again for all the great ...
1998 Chevrolet Express 1500 5.0L transmission VIN: 1GBFG15M8W
Thanks to everyone who helped me out with this problem. The problem was do to a defective torque converter. It was replaced and the customer is very happy. Thanks again everyone Rob
1999 Chevrolet Silverado 1500 4.3L Misfire VIN: 1GCEC14W5X
thanks to everyone that replied, several said to check the cam retard it was at -17 deg. I pulled the dist to check the gear it had a little wear but we decided it would be ok. I spread the clamp enough to let the dist turn a little and reset retard reading to... Trouble codes: P0300.
1992 GMC C1500 Suburban 5.7L No Start VIN: 1GKEC16K1M
You guys ROCK! I shoulda known it would be something simple. Yes, the pick up and module were the culprits, I replaced them and now all is well with the Suburban. Thanks again to all of you that replied.
1995 GMC Jimmy 4.3L lifters VIN: 1GKDT00000
well the oil pressure tester gauge was faulty which threw me for a loop/after trying another gauge the oil pressure was between 3-8 psi @ idle/after a long time the custumer finaly give us the ok to pull the oil pump and all the main brgs. like you would emagi...
1994 Pontiac Bonneville SE 3.8L MIL Lamp on VIN: 1G2HX52L5R
A lot of replies seemed to think we were having cam and/or crank sensor problems. We scoped the cam, crank and ignition module and everything look perfect. After inspecting the cam magnet and finding it in good condition we pulled the balancer off to get a vis... Trouble codes: P0341 (cam/crank error), P0321 (spark reference), P0361.
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