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Prev Professional Automotive Repair Technical Discussions for August 19, 2006
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Open Help Requests for GM
Help Request Answers
2002 Chevrolet Cavalier LS Sport 2.4L Poor Idle Quality, too high VIN: 1G1JH12T22
I hesitate to post this request because the customer is from out of state and only comes in on weekends to visit. I am down here on a Sat just to look at this problem for him. He has an excessively high idle (approx 1250 rpm). This problem was in the vehicle f...
1997 GMC K1500 Sierra SL 5.7L brake pedal VIN: 1GTEK19M7V
Hello, I have inherited this truck after several other techs have been working on it. It came in with soft brake pedal (like there is air in the system), and the ABS light was on. They power bled the system, and read the codes. The code was for the front wheel...
1994 Pontiac Bonneville SE 3.8L alternator VIN: 1G2HX52L1R
Okay, here we go. I have this 1994 Bonneville and it is eating alternators. My problems started when I noticed my "check gauges" lite illuminated and volt gauge was below 11 volts. I limped home and checked alternator output and battery voltage. At the alterna...
1997 Pontiac Grand Am SE 2.4L inlet neck VIN: 1G2NE52T2V
Hello GM techs. I have a 97 grand am with an intermitent coolant leak from the inlet neck on left side of head. I have replaced the neck and o-ring and it was fine for about a month or so. car is back, leaking in the same spot. Funny thing is there seems to be...
2002 Pontiac Grand Am SE 3.4L starter relay / ecm VIN: 1G2NF52EX2
i have tow this car in 3 times for the same problem in last 3/4 months . i have tested all related wiring to and from starter relay to computer . all ohmed ok . problem is the ecm wont ground starter relay to complete curiut so car will turn over ? no codes ha...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Cadillac DeVille 4.9L No Start, Hesitation, Stall, MIL Lamp on VIN: 1G6CD53B1M
Hi all tecs who replied on this Cadillac. Most replies suggested pick up coil, hall effect switch or module. Installed reman. dist., cap, coil and rotor. We have had 4 successiful drives and runs fine. Felt some of these components may be difficult to test sin... Trouble codes: 048 (egr problem), 053 (dist. signal interrupted).
1995 Chevrolet Astro 4.3L Unknown VIN: 1GCDM19WOS
Hello!! Thanks everyone who spent some time for my post. The van is fixed without the answer that I can show you. Most people suggested to check the wheel bearing. But it was not the problem this time. Some people suspected the air is still in the system. Th...
1996 Chevrolet Blazer 4.3L ac/heater mode switch VIN: 1GNDT13W3T
Thank you for all the help, most replies said to check the vac supply and look for pinched hoses and a bad vac canister. checked all of those again today. had 18-19 inches of vac at back of switch. and could find no leaks again. just as one reply mentioned abo...
2000 Chevrolet Silverado 1500 4.3L MIL Lamp on VIN: 1GCEC14W6W
Thanks for all the infomation. I chacked volatage @ the knock sensor and it was 0. and .5 @ the pcm. while tracing the wire found that the wire had been pinched between the trany and engine. repaired the wire and all is well. thanks again.
1997 Pontiac Grand Prix SE 3.8L super charger
Hi ,thanks for all the replies.the customer came back with a used one (as David from texas suggested).only got the re and re. I was looking forward to repairing this one,all went well, thanks again.
2002 Pontiac Firebird Formula 5.7L MIL Lamp on VIN: 2G2FV22G12
The Air Pump Was Siezed. I Took The Advice & Used The Scanner In An Attempt To Activate The Air Pump. I Checked All Of The Relays & fuses Which Were Good. After Locating The Air Pump & 'Pulsing' It With The Scanner I Was Able To Determine The Integrity Of Th... Trouble codes: P0410.
2005 Pontiac Grand Prix 3.8L blower motor VIN: 2G2WP52205
we had to send to the dealer, they were going to replace the control head. the custermer came in today and said the dealer still had the car same problem they said something was bleeding voltage back to the blower control module and burning it up.
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