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Prev Professional Automotive Repair Technical Discussions for July 25, 2013
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Open Help Requests for GM
Help Request Answers
2004 Cadillac SRX 4.6L Mechanical VIN: 1GYEE63A74
Calls for removal of engine and transmission together after pulling T-case. Has anyone pulled one out the top without transmission? thanks
1992 Chevrolet C1500 Cheyenne 5.7L Converter VIN: 1GCEC14K6N
Hey Guys, I rebuilt this transmission for a hot street truck and mysteriously lost lockup function. This is more than a simple wiring issue. Does someone have an explanation of the hydraulic system in detail so that I can follow the hydraulic circuits. TransGo...
1997 Chevrolet S10 4.3L Brakes VIN: 1GCCS14X5V
Replaced leaky brake line from proportioning combonation valve all the way to rear of vehicle were it splits off and goes to both rear wheel cyls.Now I have a rock hard pedal and brake lite on and cant get fluid out of bleeders @ rear wheel cyls.and have no re...
1998 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: 1GNDM19W5W
currently po300 multiple cylinder misfire, check injection system :found faulty injectors for bank 1, replaced new fuel injection system all the injectors and assembly, clear codes and retest[ engine running rough,at this time po 300 is on. perform compression... Trouble codes: P0300, P0302
2003 Chevrolet Silverado 3500 LT 6.0L front fuel tank VIN: 1GBJC34U43
Thanks in advance for any help. We got this truck towed in to us - no start condition - found front tank empty, but fuel gauge said it had fuel in it. We replaced pump and gauge readings seemed to be where they should be, so we shipped it. Truck was returned t...
2003 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on VIN: 1GCEC14X93
hello thanks for any help I have a 03 chevy 1500 pickup with 4.3l engine this thing is misfiring on hard acceleration ive ruled out the maf sensor ignition coil ignition module distributor distributor cap plugs and wires fuel injectors cats fuel pressure while... Trouble codes: P0300
2004 Chevrolet Silverado 1500 LS 5.3L steering system VIN: 2GCEK13T34
Hi all, this one has me stumped as I haven't heard this before. Sounds like a brake pad squeal high pitched, but only makes noise when running and you turn the steering wheel on dry pavement a quarter turn either way, then like back off an eighth turn. Can hea...
2004 Chevrolet Tahoe Z71 5.3L forward shifts, 4kcd/9kcd
Customer came in with bad transmission (slipping, burnt fluid)and said he had another transmission from a wrecked truck. His truck is an '04 Tahoe Z71 and the other transmission is from a 2000 Silverado Z71. I noticed that the electronic box on the shifter stu...
2006 Chevrolet Silverado 2500 HD LT 6.0L speedo, odometer,cruise control VIN: 1GCHK24U06
Hello Group, This is my own truck that was sitting for a month or so and my daughter drove it and the speedo, odometer and cruise are not working. I do have speedo output info with scan tool. I have one cluster code B0540 but I have no diagnostic info on it. T...
2008 Chevrolet Express 1500 5.3L Poor Idle Quality, Cuts out, Misfire VIN: 1GCFH15448
Bogs down on acceleration, fouls spark plugs, O2 sensors hung on rich. Have cleaned throttle body and it helped a little; removing the air filter also helped, but it still bogs down. Converter temperatures are similar at about 1000 degrees F. Driver's side con... Trouble codes: 300
2008 Chevrolet Silverado 3500 HD LT 6.6L no crank VIN: 1GBJK39628
this is a tow truck that has been to multiple shops over the last couple of years.new owner begged me to take this job against my better judgement i said yes.issue no crank, if you manually engage starter relay truck starts and drives, com codes all over.start...
2006 Pontiac G6 GT 3.5L No Start VIN: 1G2ZH15806
This car is a very intermittent no start. It's back to us for the second time. Last time it did crank, start to fire, then stalled. The U7300 is identified by the Modis, there is nothing in MOD at all, haven't found anything here either. Car acted like the VTD... Trouble codes: U7300 (PCM Communications lost), U2105 (BCM/VTD lost comm to PCM)

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick Regal LS 3.8L Cuts out, Stall VIN: 2G4WB52K5V
Let me start by thanking everybody for all of the suggestions. In the end the fix was a bit muddled. Not sure which was more of the problem the shorted wires to the crank sensor or the partially fried PCM. I thought it strange to have a "good" signal from the ...
1967 Chevrolet Impala 5.3L don't know VIN: N0TAVA1LBL
Thank you to all that replied to the help request. As many indicated, the calipers were the likely cause. It is hard to prove, but we got OK from customer to replace calipers. After finding someone who actually had rebuildable cores or rebuilt units, we rep...
2002 Chevrolet Tracker 2.0L crank sensor VIN: 2CNBJ13C52
Thanks and job done, no short cuts Thanks again. Pulled trans, and removed sensor and replaced
2009 Chevrolet Express 2500 4.8L brake lights and rear turn signals VIN: 1GCGG25C89
ok this is fixed...customer installed single filament instead of double filament bulbs,i didn't check that first because he told me he replaced the bulbs already. I know better but it happens. I want to thank everyone for your time and helping me out.
2001 GMC Sonoma SLS 4.3L MIL Lamp on VIN: 1GTDT13W11
Time is up to close this. We soaked in a can of 44K thru the PCV line, with an orifice so it took a couple of minutes for the 44k to get in, let it soak, it feels a bit smoother, but no change on the misfire counts. Remember this is a new MFI not CFI, so pop... Trouble codes: P0300 (p0304-), P0304 (testing and results).
1995 Oldsmobile 98 Regency Elite 3.8L cam/crank sensor VIN: 1G3CX52K4S
Ok, so the owner decided to drive it like it is instead of attempting a new pcm, seems to be the issue, also just for information, Tech line advised that this is a 95, with OBDII plug with OBD programming, so if a miss occurs the pcm can only interpret it as a...
2008 Saturn Aura XR 3.6L Mechanical VIN: 1G8ZV57748
Thanks to all who replied. Job is done successfully without lift. Used engine support on front & rear of engine maybe adding 1hr of additional work. Actually I don't know if dropping engine & trans w/sub-frame would be much easier. Aligned 4 wheels when done. ...
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