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Prev Professional Automotive Repair Technical Discussions for August 7, 2006
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Open Help Requests for GM
Help Request Answers
1984 Cadillac Eldorado 4.1L Looses belt VIN: 1G6AL5788E
This Eldorado comes in to my shop every year for service. The customer stores it in the winter time. He starts the car occasionally in the winter to keep things loose. Every winter when he starts the car the air pump belt shreds and of course flies off. When t...
1997 Cadillac Seville SLS 4.6L Cuts out, Stall VIN: 1G6KS52Y4V
at cold startup car stalls after 30 min. will restart right away no cranking problems. fires right up. after warmed up car will stall at 8 or so minutes. will start right away. eventually car will stall after a minute. and will always start after stall. by the... Trouble codes: 1599 (engine stall or near stall)
1997 Cadillac Eldorado 4.6L battery VIN: 1G6EL12Y2V
good evening to all.I have this caddy that if its left sitting 2 or more days battery goes dead.battery is a brand new napa" select" and charging system is fine (14.4 volts ).durring last visit (when battery was replaced I did check for parasitic draws it was ...
1999 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 1GCEK14T4X
ok all you gm techs this ol ford guy needs some help. truck has misfire under a load or going down the road,but hardly ever at idle,and the weird thing is its only on the right side 2,4,6,8.all have recent misfire history.it does not miss on 1,3,5,7.im thinkin... Trouble codes: P0300
2000 Chevrolet Malibu LS 3.1L compressor VIN: 1G1NE52J1Y
A/c has no request?? new a/c head)
2001 Chevrolet Venture LS 3.4L ebcm VIN: 1GNDX13E41
vehicle returned with c1214. total abs and tcs system inoperative. cleared coded and immediately returned in current and history code search. I suspect a broken wire where i repaired the last one but could not find one. our flow chart does not specify which ci...
2000 Pontiac Grand Am SE 3.4L MIL Lamp on VIN: 1G2NF52E8Y
Hi, thanks for your time. Please read this whole post thoroughly before giving me your input. This car has been in several times for a evap code p0440, I deal with evap codes regularly at our shop but this one is giving me the run around. As seen in the "relat... Trouble codes: P0440
2001 Pontiac Sunfire SE 2.2L odometer VIN: 2JB5244172
we have a 2001 pontiac sunfire with a milage odometer that wont desplay milage. scan all systems with a gensis scaner and found no curent or history codes. checked michel for info on inst. cluster.gave a good article on gauges and lamps and power/grounds but h...

Fixes & Summaries for GM
Fix/Summary Answers
1988 Chevrolet Corvette 35th Anniversary Edition 5.7L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1G1YY2183J
thanks to everyone who help with this issue, the problem ends up is the ECM PROM. Install new one from the dealer & the car ran like new . Thanks again
1996 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNDM19W6T
This one beat me up! i couldn't understand how the misfire could change cylinders, after all i checked everything. then one day i decided to check the compression again, at this time i had only 82psi on cyl. #3 but if i left the engine running gradually the co... Trouble codes: P0300 (random misfire).
1997 Chevrolet Cavalier LS 2.4L MIL Lamp on VIN: 1G1JF52T2V
Thanks to all who replied. We don't like to change parts just because. And we could not duplicate the problem. BUT we were left holding the bag on this one so we replaced the vent solenoid. As stated in the replies it is a very common failure. The customer has... Trouble codes: P0442.
2000 Chevrolet Silverado 2500 6.0L prndl and battery light VIN: 1GCGK24U0Y
Tried ign. switch and cluster. Neither helped. Sent vehicle on its way. Thanks for the help. I have sent it on to a dealership. This one got me Thanks
2000 Chevrolet Cavalier Z24 2.4L ABS module VIN: 1G1JF12TXY
well after about 17 hours total time we GOT IT ... it was the abs pump modual...we pluged anouther OEM one in and bingo.. thanks to all the help from everyone out there i hope someday i can repay the favor...
2001 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 1GCEK19T91
Hello again everyone, sorry but it has taken this long for me to get the vehicle back. The fix for this vehicle ending up being the removal of the piggyback computer that was installed for the propane conversion. I did not know this device was installed as I w... Trouble codes: 171 (Bank 1 too lean), 174 (Bank 2 too lean).
1996 GMC Jimmy 4.3L Mechanical VIN: 1GKDT13W5T
96-2000 4.3 with balance shaft have different timing chains, I used the set up for the 96 model and solved the slack problem by using different brands till I was satisfied with fit! Thanks to all for the help, I lost 2 days learning and researching, I wonder h...
1990 Oldsmobile Cutlass Supreme 3.1L Misfire VIN: 1G3WH54T5L
thanks to all that replied. it turned out to be a plugged fuel rail. this car uses 2 rails with the pressure regulator in between. there are small tubes that connect each rail this is where it was plugged. blew out the rail and all the lines and replaced the f...
1991 Pontiac Sunbird LE 2.0L No Start, Poor Idle Quality, Cuts out, Stall VIN: 1G2JB54K3M
steve from indiana hit this one right on the nose. fuel pressure was good which threw me off, however, volume was not there. seems when giving it some throttle it bumps up the pump enough to supply enough volume, but not on start. replaced the fuel pump and it... Trouble codes: 42 (est circuit open or grounded).
1999 Pontiac Grand Am GT 3.4L Surge, Cuts out VIN: 1G2NW52EXX
thenks to raymond for explaining 24x signal, this was not the problem, because ecm ignors this signal above 1200 rpm. did recheck fuel system and pressure were all good as was flow. sft and lft numbers all showed lean condition, so did a sensor sweep and seeme... Trouble codes: P0300 (misfire).
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