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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 16, 2006
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1998 Buick Park Avenue 3.8L sluggish VIN: 1G4CW52K2W
This vehicle has a low power condition. It acts like the timing is either retarted or fixed. We have checked all sensors with Modus. No codes, has rough acceleration when pulling out. Will not rev high enough to make wot shifts
2003 Buick Century 3.1L Stall
I've got a tough drive problem that I cannot duplicate in the workshop for diagnosis. This unit will stall at cruising speeds 60-80 mph like you pulled the plug. It will only stall after aprox 15min driving time at cruise. When it stall my foot is on the accel... Trouble codes: P0101
2001 Cadillac DeVille 4.6L compressor VIN: Y81U123794
a/c system came in low charge less than 1/2 lb . Recharged system still no power to compressor. Is there a reset procedure like in the older models?? alldata is no help. no code present with generic obdII
1988 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2GCDC1472J
hi all This one is for all you gm techs. this probelm has been going on for about 2 years now. the truck is in fair shape and runs generally perfect. accept the first minute and a half of operation. in that time the vehicle runs lean the point of it back firi... Trouble codes: 034 (map sensor circuit signal voltage low high vacuum)
1988 Chevrolet K1500 Cheyenne 5.0L Stall VIN: 2GCDK14H4J
idles ok soon as you put in gear stalls out iac is not changing as it should. 2 pins read .5 volt 2 read battery volt, had re man computer 2 years ago im leaning to computer truc dropped at shop 5 shops worked on truck no codes
1990 Chevrolet Corvette 5.7L electric antenna VIN: 1G1YY238XI
the mast is broken on the power antenna on this 'vette, i have a repair kit for it, i just need the quick & dirty on how to get the unit out of the car. i am sure it is fairly simple, but thought i would ask before i do something stupid to this guys car. thank...
1995 Chevrolet Camaro Z28 5.7L compressor VIN: 2G1FP22P2S
the a/c on this car works and then shuts off and will not kick back on untill you clear the code. The ecm stored a code 61 a/c compressor failure. My gauge readings are as flowed low side is 20psi which I think is about 20psi too low and my high goes up and do...
1996 Chevrolet Blazer 4.3L Hesitation, MIL Lamp on VIN: 1GNDT13W7T
vehicle will crank but not start when cold. i have to spray a little bit of starting fuel to get it started. also upon hard acceleration vehicle hesitates and mil is flashing. pulled code po300--random missfire detected . unfortinately good fuel gauge is not a... Trouble codes: P0300 (random misfire detected)
1997 Chevrolet C2500 Suburban LT 7.4L valve train VIN: 1GNGC26J1V
engine makes a chirping noise about 1/2 engine speed on left bank. Kind of like a gaulded or dry rocker arm. Removed valve cover and can definetly tell noise is coming from #3 exh valve and all push rods are oiling/ loudest at rocker exchanged rocker , ball an...
2001 Chevrolet Cavalier 2.2L engine VIN: 1G1JC12461
I need some help there is a large amount of oil leaking down the back side of the engine. Has anyone experienced oil leaking from the intake manifold gaskets? I have replaced the valve cover gasket and rechecked to make sure I installed it correctly. I also re...
2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNDT13S73
Hey everyone, This one is the bosses daughters car so...well you know. Here it is. She says MIL Light on so she took to dealer and they say #2 knock sensor bad. She brings to me to replace and I do as I am told and do so. Light came back on. I ran scan and fo... Trouble codes: P0332
2002 GMC Sierra 1500 SL 4.8L MIL Lamp on VIN: 2GTEK19V12
Have cat code Bank one - PO420 - efficiency below threshold. Also has a pending code for the same code. This code appeared before (within one year), was cleared and not returned until today. Question is freeze frame showed code setting at 588 RPM, 0% throttle,... Trouble codes: P0420
1993 Hummer H1 6.2L No Start, Cuts out VIN: 137XE8336P
Hello all, Have this Hummer diesel which is giving me the fits. I am not a fan on diesels nor do I work on them usually but this is the truck of a guy that restores my wood in Classic cars. Vehicle towed in no start. Found broken wire at Glow Plug controller a...
1997 Pontiac Grand Am GT 3.1L Int Lps Fuse VIN: 1G2NW12M5V
Hello fellow techs, I've got a 1997 Grand Am GT Loaded with all the bells and whistles. It came in on the hook. Customer stated it died on her. Charged the battery and did an AVR test on the system; battery, alternator and starter test OK. Checked for perosid...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal LS 3.8L shifter,inst. cluster/abs/mil lamp VIN: 2G4WB52K5X
thanks to all who replyed to my request, everybody hit the nail on the head,the ignition switch was the problem all concerns fixed,thanks iATN for this great site ,what a great resource, thanks again to all for a quick responce.
1994 Cadillac Eldorado 4.6L body fuse 2 VIN: 1G6EL12YRU
Looked around the trunk a little more after a good night's sleep. Realized it would be really easy to disconnect the switch in the decklid for the trunk pulldown mechanism and the switch on the striker that makes it pulldown. No more blowing fuse! I ran the st...
1995 Chevrolet Astro CL 4.3L Hesitation, Surge, Cuts out, Stall VIN: 1GNDM19WXS
After a frustrating week, it turned out that the new ECM was faulty and causing all of these weird problems. We replaced the ECM and everything worked out great. Thanks for all your help guys. Rob [...]
1998 Chevrolet K1500 Cheyenne 5.7L 1-2 shift hard VIN: 2GCEK19R1W
After all the great replies I told the customer that we would have to replace the torque converter and check for other problems while the trans was out. The customer decided to trade off the truck rather than fix it. Thanks for all the replies.
1991 GMC K2500 Sierra SLE 5.7L Poor Idle Quality, Surge, Stall VIN: 1GTFK24K3M
Truck is fixed! The replies I got were all good things to check. They were to ck the tps voltages, To check the dist for a cracked or weak magnet on the shaft. The dist was one thing I had checked and rechecked. One test I had done to check the dist was to hoo...
1993 GMC Sonoma 4.3L No Start, NO START COLD VIN: IGTCST9W9N
Fuel pump was the problem. Had 58 psi. not enough to open the injectors heads. Thank you for all your help Charles
2000 Pontiac Grand Prix SE 3.8L vibration VIN: 1G2WJ52K3Y
Thanks for all the advise. I am waiting for the customer to bring in his car so I can do some of the things... Sorry guys, no fix on this one yet.
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