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Prev Professional Automotive Repair Technical Discussions for February 21, 2011
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Open Help Requests for GM
Help Request Answers
2000 Cadillac Eldorado ETC 4.6L Compressor VIN: 1G6ET1296Y
Vehicle come to shop due to a/c not working it shows in the (dic) low refrigerant a/c off. Found compressor leaking, replace compressor,accumulator,orifice tube,recharge with 2 lbs of freon, clear dtc's disconnect battery. Crank vehicle turn a/c on compressor ...
2000 Cadillac Eldorado ESC 4.6L MIL Lamp on VIN: 1G6ET1298Y
I have a very good customer's car who spent pretty good money for a Jasper engine and trans replacement that I performed. The car ran great for 10k miles or so until the check engine came on. The car still ran great but it's inspection time and the car will no... Trouble codes: P0340, P0341
2000 Chevrolet C3500 5.7L fuel gauge VIN: 1GBHC34RXY
fuel gauge w/key off will settle at approximatly 1/3 tank. turn the key on, gauge will raise approximatly 10% then go to empty. disconnect fuel balance module and turn key on, gauge will go to approximatly 1/4 tank. according to customer, gauge did not work be...
2000 Chevrolet Silverado 1500 4.8L Stall VIN: 1GCEK19V3Y
Truck always starts,but only runs for a few seconds then it stalls.Seems to be in security but security light is not flashing. Also, security light does not come on when ignition is turned on. Security light will illuminate when TBC fuse is removed from the ...
2003 Chevrolet Impala LS 3.8L all gears except R VIN: 2G1WF55K93
Hey guys, you helped me in the past with this one. I recently replaced the 1-2 and 3-4 shift solenoids in this one. The original problem was when you put it in drive it was in 3rd or 4th, had no take off power. I replaced the two solenoids with NEW Delphi sole...
2004 Chevrolet Silverado 2500 HD 6.6L No Start, Stall VIN: 1GCHK23124
This one came in on a chain. I tried pumping the primer and noticed a little pressure, i pushed the service port and releived air and she started right up and ran for approx 30 min. I shut it down and went to lunch and when i came back she started right up wit...
2005 Chevrolet Uplander 3.5L Hesitation, MIL Lamp on VIN: 1GNDV23L85
Hi ladies and gents, we have this Uplander in the shop and someone decided to replace the 20 buck cable that went from the gas pedal to the throttle thingy with a couple hundred dollars worth of electronics, giving those of us in the industry the opportunity t... Trouble codes: P1125 (APP sensor), P2138 (Difference in APP sensors)
2002 Saturn L200 2.2L LF speed sensor VIN: 1G8JU54F02
When coming to a stop the ABS brakes acuaete briefly right before coming to a complete stop. At Approximatly 3 to 8 MPH. There are no codes stored in memory. The LF sensor was dropping faster then the other 3 wheels according to my scanner. So we replaced the ...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Regal LS 3.8L clockspring VIN: 1NEW348K74
thanks everyone for your input got a second gm clockspring and installed every thing is fine must of got a defective one just have never ran into that problem with oe clocksprings
2008 Cadillac Escalade ESV 6.2L parking assist module VIN: 1GYFK668X8
Called to SPS, they added missing calibrations to the system. Reflash using MDI and fixed! Thanks to all!
1994 Chevrolet S10 4.3L brake switch VIN: 1GCDT14Z7R
Thanks Guys your the best, combination of problems here, intermittent bad bulbs, a bad ground, and the killer a trailer harness wired in with one of those cheapo blue plactic wire taps. Thanks again!!!
1999 Chevrolet Silverado 1500 5.3L 2-3 & 3-4 Shift VIN: 1GCFK23T4X
Ok, finally got this one figured out. The problem was the 3rd acummulator check ball in the case was not sealing, I always check these for being stuck and this one was moving freely but would not seal so the 3rd apply pressure was just bleeding off. When I put...
2003 GMC Yukon Denali 6.0L cooling system
turns out that the ect sensor was not letting the computer know that the engine was getting hot enough thanks for everyones replys !
2004 GMC Envoy SLE 4.2L brakes VIN: 1GKDT13S94
It turns out that the problem was the right front wheel hub and bearing assembly. Thanks to everyone who responded. This wheel bearing shows no other signs of wear, it is not loose, but the change fixed it. Thanks again to all. The wife is happy now.
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