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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 1, 2007
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Open Help Requests for GM
Help Request Answers
2000 Buick Century Custom 3.1L fans VIN: 2G4WSJOY11
to all the good people of iatn: i have this century that the cooling fans arent commanded to turn on till 230 degrees. i changed the temp. sensor just because it was only 15 dollars i flushed the system and the computer will still command fan on at 230.if i co...
2001 Chevrolet Impala 3.4L fuel guage and temp guage VIN: 2G1WF55EX1
thanks in advance for all help. this impala came in with the fuel guage eratic driving 3 miles down road it will jump the 3/4 tank then down to 1/4 and so on up to full.then temp guage works part time no codes customer stated when the temp guage is inop the co...
1996 Pontiac Grand Am SE 2.4L Poor Idle Quality, Misfire VIN: 1G2NE12T6T
thanks for your time guys. car came in missing very bad. checked codes (no light) p0300 misfire.checked mis data all 4 cyl 0's (my scanner always shows ign misses sofar) check engine data lt fuel trim avg -100%,lt ft -11.7, short ft 0% st ft avr -100%, spark a... Trouble codes: P0300 (misfire)

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Camaro 5.7L 3rd gear
It's done and out the door. I pulled it apart and found all of the material gone off of the 3-4 plates and burned steels. Thanks for the help.
2000 Chevrolet Express 3500 5.7L turn signals VIN: 1GCHG35R3Y
thanks guys for all your input on this one. i replaced all 4 bulb sockets for the front and rear turn signals and even added extra ground wires to them but i had the same problem. so off i went to some salvage yards looking for the turn signal resistor and it ...
2000 Chevrolet Silverado 1500 5.3L Blend door VIN: 1GCEK19T9Y
Thanks to all that replied, this one is fixed. Actuator motor was the problem. Note, do not run actuator motors unless installed, We ruined one not knowing this. Happy Holidays.
1995 GMC Safari SLE 4.3L water pump gasket VIN: 1GKDM19W9S
Thank you for the quick replies. Most said to make sure the mounting surfaces on the block and water pump are smooth and flat which we had done every time. One said replace the bolts, and one mentioned a vibration from the fan clutch. We replaced the water ...
1995 GMC C7000 Topkick C7H042 6.0L Excessive Emissions, Poor Idle Quality, Surge, Stall, Poor Fuel Economy VIN: 1GDL7H1P6S
thank you for all of your help. In the long run it was the computer that was faulty. charles was right on.i figured this all along but a real oddball pcm # no local supliers could get one.had to rule out everything first,like big confusion on fuel presure it... Trouble codes: 45 (rich exhaust), 13 (oxygen sensor open shorted or bad).
2004 GMC Yukon XL 1500 SLE 5.3L engine VIN: 3GKEC16T74
One other tech had the same problem. He found #1 lifters and cam lobes bad. I havent torn engine down far enough yet but I will post what i find.
2002 Saturn L200 2.2L heat & overheat VIN: 1G8JU54F82
We used the vacuum tool and the problem still existed. We then decided to replace with a factory pump. When we removed the aftermarket water pump we put in 2 weeks ago, we discovered that the fin assembly had broken. We decided to install the factory pump anyw...
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