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Prev Professional Automotive Repair Technical Discussions for September 25, 2014
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Open Help Requests for GM
Help Request Answers
2001 Buick LeSabre Custom 3.8L Stall VIN: 1G4HP54K01
Don't know anything about this car's history. New customer. Starts and runs great until it warms up. Sets P0453 DTC and dies. No spark from coil packs. Do have power to coil packs, but no fire to plugs. I would think coil pack bad - but both ? Any advice would...
2007 Cadillac SRX 4.6L driver door module VIN: 1GYEE63A87
Codes pulled from PDM= U0199- Lost comm. with DCM A B320B- Rear door window motor internal elec. failure U1500(01)- Inter-Device dedicated buss fault B320A- Fron door window motor internal elec. failure This is an attempt to confirm that the DDM is the faulty...
1987 Chevrolet R10 Suburban Custom Deluxe 5.7L engine VIN: 1GNER16K9H
I am working on a 1987 chevy surban 2wd it has a random misfire and it gives off a code 42 [est problem] have ohmed the wires there ok have replaced the coil ing mod and the emc used the old proms ran great for a couple days then it was surging going up hill o...
1990 Chevrolet Lumina APV 3.1L Poor Idle Quality, Surge, Stall VIN: 1GCBU05D8L
This is going to be a long one so bear with me. This is my bosses car. As a rule, I don't shotgun parts at a car, but what the boss wants, the boss gets. About a month ago did an ignition tune up, cap rotor plugs wires just for maintenance. The current problem...
2004 Chevrolet Express 2500 LS 6.0L No Start VIN: 1GCGG29U14
Customer states the engine stalled while driving and would not restart. Could not communicate with PCM found no power at pin 16 of DLC, found cigar fuse and trailer fuse open replaced both and gained communication.Keep losing communication with PCM can only re... Trouble codes: P1626 (Anti theft system fuel enable), U1041 (Loss of EBCM communications)
2006 Chevrolet HHR LT 2.4L steering VIN: 3GNDA23P56
Vehicle pulls/drifts left. Checked alignment, made camber, toe perfect. Rear toe camber perfect. sold 2 front tires. Road test, still pulls left. Rotated new front tires, still pulls. Rotate rear tires still pulls. Disabled eps by pulling 60 amp fuse underhood...
2003 GMC Sierra 1500 SLE 4.3L Mode Door VIN: 1GTEC14X83
Thank you to all who are reading this! I don't know what I'm missing here. all sub systems work great independently ( control head, cable, cable with control head attached, and door mechanism, it is extremely hard to move. When I installed the new control head...
2009 GMC C5500 Topkick C5V042 6.6L MIL Lamp on VIN: 1GDE5V1929
Bus came in limp in mode. We had glow plug codes, MAF codes, glow plug controller performance. We found a chaffed power cable to glow controller. #6 glow plug was open, connector to glow plug control melted. After new controller, wire repair, and new #6, we ha... Trouble codes: P0102
2012 GMC Sierra 1500 SLE 6.2L Fuel tank VIN: 3GTP2VE2XC
This truck will not take fuel it keeps clicking off like the tank is full. It will not take fuel even if the EVAP canister is disconnected. I have pulled the tank twice and checked the vent on top of the fuel pump, and on the end of the tank, checked the roll ...
2000 Oldsmobile Alero GL 3.4L No Start VIN: 1G3NL52E5Y
Good day all, the olds alero came to me not running. had new pcm and passlock sensor installed. problem is when cold the car wont start, acts like its flooded, the engine light is flickering while cranking. after several tries its starts and runs ok. prevous s...
1999 Pontiac Sunfire GT 2.4L ets,abs,temp,anti theft, VIN: 1G2JD12T5X
Good Afternoon everyone,,, i have a customer that came in today her complaint was she was driving and she had to come to a hard braking stop it stalled out and ever since then all of her dash lights come on ets,abs,rpm signal drops outs as well as the temp gau...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Cadillac DeVille 4.6L no start VIN: 1G6KD54Y0Y
After consulting Identifix, and wiring diagrams, found the large ground cable that bolts to alternator, and body-under AC dryer,was totally broken. According to Identifix, this is a major problem. Cables corrode, and insome case break. This one was physically ...
2007 Cadillac SRX 4.6L Mechanical VIN: 1GYEE63A07
ok first i want to say thanks for the replies . Dan we have all the updated things to test for leaks that was not the problem. as said this enging would leak for about the first 5 mins on cold startup and then not leak a drop until it had set for hours , i cou...
2002 Chevrolet S10 4.3L Misfire, MIL Lamp on
Distributor And Fuel Pressure Regulator Fixed Problem Trouble codes: P0304.
2007 Chevrolet Silverado 2500 HD Classic WT 6.0L Misfire, cuts out VIN: 1GCHK29U97
Customer is unable to pay for more time even though we gave him a lot more than e charged for. you all know how that goes. thanks for all suggestions.
2007 Chevrolet C4500 Kodiak C4C044 6.6L engine warning lights and eng itermittent shut dow VIN: 1GDE5C3907
we could never duplicate problem however Tom from Utah lead us down the correct path,,, at main feed junction box with engine running had 14.i v from starter,,, connection above this on block feeds 2 fuse boxes on this connection we had 13.2v at 1 fuse box ha...
2011 Chevrolet Express 3500 6.0L Not sure VIN: 1GB3G2BG4B
ok here goes I changed all idler bearing , the tensonier assy twice because the first on worst noise then the orig one and finally after plus the alt had a rumbling noise when really loaded with everything on in the bus all is fine thanks everyone
2006 Pontiac G6 2.4L sidecover VIN: 1G2ZF55B56
All three replies were correct. Transmission does not need to be removed. Remove drive shaft and lower cradle. Have to do a little prying to get cover out. Once new cover is put into position recheck gaskets as they can easily be snagged as you finangle the co...
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