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Prev Professional Automotive Repair Technical Discussions for June 21, 2008
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue 3.8L Compressor control
For starters vehicle has full refrigerant charge. With the original pcm when a/c was commanded on with the tech2 the compressor engaged and the system cooled. The output leg of the circuit is completely functional(pcm grounds compressor relay and compressor en...
1979 Chevrolet Camaro 5.7L engine VIN: 14G287L9N5
I have a 1979 z28. I notice the temp gauge goes high when I`m on the highway. If I drive around on the city, it runs cool. I have a350c.i.d. engine out of a 1980 chevy k10.It never ran hot in the truck. It has about 5,000 miles on it since the rebuild to stock...
1989 Chevrolet Corvette 5.7L No Start VIN: 1G1YY3184K
Customer stated car was hard to start when warmed up. Car starts o.k. cold. Test drove car found it performed normal. Parked in front of building and shut it off. Ten minutes later it would not start. Had spark out of spark tester. Fuel pressure o.k. Fuel volu...
1997 GMC Jimmy SL 4.3L power windows VIN: 1GKDT13WXV
hello fellow techs,i got this 97 jimmy all power windows not working.i dont have power to the window circuit breaker at fuse panel,mitchell doesnt show what supplies power to the breaker,can somebody give me the right direction the problem.thanks in advance..(...
1998 GMC Jimmy Envoy 4.3L compressor VIN: 1GKDT13W2W
I have this 98 Jimmy that came in with no A/c. Compressor inop. Normally low freon leaking compressor case. Freon levels are OK. I connect OTC scan tool and code in a/c section of B0161, ambient sensor high. Inspected nothing out of the ordinary sensor measure...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Cadillac Eldorado 4.6L MIL Lamp on VIN: 1G6EL12Y5R
I'm 95% sure the PCM is the problem. Next day, No codes. The thing I noticed was the "Check Engine" lite, only blipped on when the key went to run. Then came on during cranking, and went off at engine start, With no codes present. That to me is a PCM go'n sou... Trouble codes: 23 (Ingnition controll problem).
1997 Chevrolet K1500 5.7L No Start VIN: 2GCEK19ROV
Tanks for all the input. We removed the upper intake and poppets to verify that they where all pluged, once removed you could run the injector with the tech 2 or just touching the control side to ground but no fuel spray. Replaced with the updated unit and all...
2006 Chevrolet Silverado 1500 LS 4.3L MIL Lamp on, dlc connection VIN: 3GCEC14X86
The transmission was replaced wich fixed the shifting issues. The scanner communication seems to be a reflash issue. GM has a reflash for the pcm to help with aftermarket scan tool communication. A Tech 2 revealed a codes relating to trans. component slipping ...
1995 Pontiac Grand Am SE 2.3L Rear Brakes VIN: 1G2NE55D4S
Thank you to all who replied, I got a lot of good information. I believe i had a couple things contributing to this problem. As it turned out we replaced the front brake calipers, Pads, and rotors. cleaned and readjusted the rears and as luck would have it it ...
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