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Prev Professional Automotive Repair Technical Discussions for December 11, 2012
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Open Help Requests for GM
Help Request Answers
2001 Buick Century Limited 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 2G4WY55J51
this car idles bad and when you try to accelerate it back fires pops and falls flat, the cat converter was completly melted down. i checked data with snap on scanner all seemed ok except st and lt were in neg at idle maf was at 13 grms per sec which i thought ... Trouble codes: P1374, P0420
2002 Buick Rendezvous CX 3.4L starting VIN: 3G5DB03E12
this vehicle has been in several times for this issue. when i get it it does not give me any problems, until now. fuel pressure is on the money, has spark. only thing that hasnt been checked is injector pulse due to when i get ready to take the plenium off it ...
2004 Buick Century Custom 3.1L Instrument panel VIN: 2G4WS52J14
Driving along and all dash warning lamps come on, vehicle still runs and drives. We have not been able to duplicate the problem. Also client mentioned some type of a "beeping" noise, but not the horn We have not been able to find any issues, so we are looking...
2007 Cadillac Escalade EXT 6.2L MIL Lamp on VIN: 3GYFK62847
truck came in for engine light for p0300 had original plugs and wires on it change them with ac delco parts. also needed a evap vent solenoid. drove it and it came up with po172, p0175. the guy is a "mechanic" so he might of cleared the codes. the ST FT are -5... Trouble codes: P0172, P0175
1991 Chevrolet S10 2.5L Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy VIN: 1GCCS14A6M
Thanks to all in advance. I have a 91 s10 p/u 2.5L. It runs horrible. Came in for misfire and loss of power. we changed the origional spark plus and wires and made a slight difference for a few weeks. Now the vehicle feels like if u barely touch the accel peda...
2001 Pontiac Aztek 3.4L Mechanical VIN: 3G7DB03E61
i have this all wheel drive here need passenger side front axle .i have very hard time getting the proper one the old one has female spline on the inner cv joint ,all the new one my supplier has long male spline.is any one has this problem before .the dealer i...
2008 Saturn Vue XE 2.4L No Start VIN: 3GSCL33P68
This one was towed in for no start. First checked fuel pressure & then for codes. 65 psi & no codes. Checked spark, ok so checked injector pulse, theres the problem. There is 12 volts to all injectors but no ground. Scanner shows crank & cam signal, also shows...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Buick Century Custom 3.1L fuel and temperature lights VIN: 2G4WS52J43
This vehicle has not returned yet but we will replace the cluster according to tlech recommendations on defective cluster problems on these cars. Tech posts were as follows, "If your cluster was oe, and still warranty you should defect it out" "Was this probl...
1996 Chevrolet Blazer 4.3L no 3rd or 4th gear VIN: 1GNDT13W5T
Thank you to all that replied, excellant information and knowlege out there. Justin from Michigan and Kirt from Florida directed me to the correct location of the concern they were right on with the capsule being faulty. Pulled the valve body back off and trie...
1999 Chevrolet Camaro Z28 5.7L Fuel Pressure VIN: 2G1FP22GXX
The fuel pressure is now a steady 65lbs. It seems that before the current owner someone "fixed" the car. They removed the tee assembly before the fuel filter (now discontinued) and ran the vapor line to the return line that is why Bradford, I was pulling hair ...
2000 Chevrolet K2500 5.7L Unknown VIN: 1GCGK29R0Y
This vehicle was hard to diagnose because it belonged to a park dist and kept coming and going.After already changing the rear drums and shoe I was able get truck and go on road test.This truck would shake on brake apply but no pulsating on pedal at all so I p...
2008 Chevrolet Trailblazer LT 4.2L tcm VIN: 1GNDT13S28
Well this one is fixed. I ended up getting lucky on monday morning it acted up and I had no communication with the ecm on my tec 2 . I looked at the computer data line wire diagram and found ecm runs threw tcm to data link connector started to wiggle wires to ...
2011 GMC Sierra 3500 HD WT 6.0L No Start VIN: 1GD312CG1B
OK - so got this fixed. Thanks for all those that replied except the one from New Mexico - If you want to tell me I'm dumb that's fine most times I will agree but at least provide a solution also. Any way it was the fuse box itself. The power circuit on the in...
2002 Pontiac Sunfire SE 2.2L engine lopes VIN: 1G2JB52F12
My apologies for not getting back sooner but the customer STILL has not brought the vehicle back to me yet, and will not until after the X-Mas, New Year holiday's. I believe the problem to be the PCM and after the holiday's I will get my chance to finish it. A... Trouble codes: P0507.
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