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Prev Professional Automotive Repair Technical Discussions for February 22, 2012
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Open Help Requests for GM
Help Request Answers
1998 Cadillac Catera 3.0L smell VIN: W06VR52RGW
Car was dropped off a raw fuel smell at times.It is up front but on signs any leaks. Before I pull the upper intake is there any common problems with this model Caddy. Thanks, Dave [...]
2008 Cadillac Escalade EXT 6.2L Electronic Susp. Control VIN: 3GYFK62878
OK GM?Cadillac Tech's I need something to work with here! I'm Banging my head against the wall with this one! Vehicle came in with "Service Suspension System" light illuminated on IP Information center. Scanned for DTC's; Retrieved a C0660 - Level Control Exha...
1999 Chevrolet Blazer 4.3L 4w4 VIN: 1GNDT13W4X
good afternoon fellow techs i am really stumped on this one. customer came in saying 4x4 did not work so he put in a new 4 button switch and it when into 4x4 low, and won't come out. 4x4 light in instrument panel not coming on, auto 4x4 light and 4x4 light on ...
2003 Chevrolet Trailblazer LTZ 4.2L Hydraulics VIN: 1GNDS13S63
Vehicle left last week with good brakes, but returned yesterday with an extremely spongy pedal and it goes to the floor under a panic stop with ABS activation. I've tried bleeding manually, with a pressure bleeder and by vacuum. Pedal pumps up hard, but I cann...
2003 Chevrolet Tahoe LT 5.3L Stall, MIL Lamp on, Loss of power VIN: 1GNEC13Z83
Vehicle came in with a loss of power complaint, customer said after a short drive ,3-5 miles , ses lite would come on and dash would say reduced power. Could turn off ignition and restart, it would be ok agin for a few more miles. We scanned ecm and found only... Trouble codes: P1516 (Electronic throttle mode vs throrrle os performance), P0120, P0226, C0245, U1000 (Class 2 data link fault)
2006 Chevrolet Impala LS 3.5L No Start, Stall VIN: 2G1WB58K46
This car was drivin approximately 165 miles & died & would not restart.when it arrived at our shop it started & ran was two qts. Low on oil. We filled it with oil, checked for major leaks and returned it to customer. She drove it 28 miles & the problem... Trouble codes: B1000 (System 36)
2007 Chevrolet Silverado 1500 Classic WT 5.3L MIL Lamp on VIN: 1GCEK19B17
Within 100 km, CEL 0n again, this time with both sensor codes. Is there any known pcm or extended harness issues known with this vehicle? Power is way down but seems to come back intermittently depending on throttle position. Do these codes cause the timing to... Trouble codes: P0327 (p0332-), P0332
2001 Pontiac Grand Prix GT 3.8L No Start, Stall VIN: 1G2WP12K41
Hello all thanks in advance. Have this grand prix here that is an intermittent stall and has failed to start once on the customer. Car was towed in and like usuall it started up immediately. She says that usually within 10 to 15 minutes of driving at around 40... Trouble codes: P0141, P0327, P0332, P0336, P0650
2004 Pontiac Grand Prix GT1 3.8L No Start, Cuts out, Stall VIN: 2G2WP52294
Hello group, thanks inadvance for any help I may receive. I have this pontiac driving us a little batty. Vehicle will start and drive normal(not for long) and just quit. Pull over and wait a couple minutes and go on your way, and the cycle repeats. Does not st...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet K2500 Cheyenne 5.7L No Start VIN: 1GCGK24R5T
Hey everybody, thanks for the advice. I backed up and started from the beginning. same symptom, spark from the coil but not to the plugs when you first try to start it. Double checked the dist, cap and rotor. All tight and good, and of course signal to the... Trouble codes: 1345 (cam/crank corelation.).
1997 Chevrolet K3500 Cheyenne 7.4L Poor Idle Quality, Misfire VIN: 1GCHK39J6V
This one is finally fixed. Thanks for all the awesome info and ides. As John suggested- and others- the coil was weak. We also replaced the "new" cranks sensor gain because when we scoped it it would have varieations in the length of the pattern-- sometimes lo...
2000 Chevrolet Monte Carlo SS 3.8L No Start, Stall VIN: 2G1WX12K0Y
thanks for alll the replies we thought the purge solenoid also but this is my personal vehicle and i am not to concerned about it right now but we did but a purge solenoid on it and it did not fix it so i am going to let it go for now thanks agian for all the ...
2003 Chevrolet Cavalier 2.2L starter VIN: 1G1JC52F53
Well, after overwhelming advice, when this vehicle returns(might be this weekend, but probably a couple weekends from now) we are going to replace the battery because it is almost 4 years old, not a good name brand battery and it is down a bit on CCA. We are a...
2004 Chevrolet Silverado 2500 HD 6.6L Trany codes and now engine wont turn VIN: 1GCHK23174
THANK YOU EVERYONE FOR ALL YOUR HELP!!! This one is finally fixed. I am no transmission guy so I was shooting in the dark and you all had some excellent advice and most everyone was right on the money or close. The transmisson pump if fact seized/locked...
2004 Chevrolet Silverado 3500 6.6L Surge, Misfire
Unfortunately this customer did not want to pursue this issue any further at this time. We feel strongly that the issue was either compression related or a harness issue to the injector in question. I have seen electrical issues in Dodge Cummins engines with... Trouble codes: P0303 (Cylinder 3 misfire detected).
2005 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCJK33135
All replies were helpfull and provided a lot of good information. Nevertheless the problem was solved only after reprograming the PCm with the later calibration, yesterday recieved the truck again because I asked my client to bring it back after 15 days, chec... Trouble codes: P0101 (Mass Performance), P0299 (Turbo Under boost).
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