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Prev Professional Automotive Repair Technical Discussions for May 10, 2012
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Open Help Requests for GM
Help Request Answers
1995 Buick Century Special 3.1L p0341 VIN: 1G4AG85M7S
This vehicle has a hard start and is backfiring. It has a P0340 code, and on hard acceleration it is cutting off. Help please!!
2004 Buick Rainier CXL 5.3L transfer case VIN: 5GAET13P04
Good afternoon. We have been banging our heads on an 04 Ranier awd problem. Vehicle came in with transfer case apparently in 4wd (this system is fully automatic and doesn't allow the driver to select any mode). There were a bunch of codes stored (B0770,775,780...
2005 Buick Park Avenue 3.8L Dtc VIN: 1G4CW54K15
replaced air bags (2) & module air bag light still on with the code B0022 every connection checked and rechecked
2005 Buick Century Custom 3.1L Starting system VIN: 2G4WS52J35
Car came in whith complaint "vehicle will not start." Checked battery voltage; had 12.24 volts. Tried starting car and it would stall (CRANK, CRANK, STALL, CRANK, CRANK, STALL and so on). Pulled inside shop and tried again. Car started right up. No current cod...
1999 Cadillac DeVille 4.6L abs VIN: 1G6KD54Y3X
we need help... we got this 1999 cadillac deville. it keeps setting code c1232 & c1233 for the rh frt & lh frt speed sensors open. we replaced the abs module with a used 1 & r/r frt speed sensors / HUBS. load test the circuit & it tests good, even wiggled wire...
1993 Chevrolet C1500 Cheyenne 4.3L warm air VIN: 2GCEC19Z9P
customer complained of noise coming from AC compressor although ac was working fine, still original R12 system. customer diagnosed the compressor, we opened to hood and when compressor was turned on it made a terrible noise. so we ordered a R134A compressor (c...
1996 Chevrolet S10 LS 4.3L evaporator VIN: 1GCCS19X3T
hello techs ; looking for some help on this ,we believe to be freon loss at evaporator. never did one . this is personal vehical .these heavy jobs may be out of this seniors capacity if evaporator case is removed is this still a dashboard R+R .radiator shop wa...
2001 Chevrolet Suburban 1500 5.3L steering VIN: 3GNEC16T81
Chevrolet says hard steer to right is normal.I don't think so. These vehicles do not steer like this when new, so what is happening to them with higher miles causing this.If anyone has a fix please post it.I have no more parts left to replace to correct this c...
2003 Chevrolet Tracker ZR2 2.5L Poor Idle Quality, Stall VIN: 2CNBJ73463
This tracker came to me second-hand after maf was replaced with after-market brand; customer didn't want spend 1200 dollars at GM dealer. The new maf did exactly the same as the factory original, engine would run poorly at idle and stall, down the road just fi... Trouble codes: P0171, P0174
2003 Chevrolet Tahoe LS 5.3L oil VIN: 1GNEK13T23
The oil pressure drop to zero and the low oil pressure light come on after some driving. The oil gauge on the instrument cluter and my manual gauge read the same. I hook my manual gauge to the oil filter houseing. I already replace oil pressure switch. I guess...
2008 Chevrolet Silverado 2500 HD WT 6.0L Chmsl VIN: 1GCHK29K98
CHMSL stays on at all times. Mitchell shows a relay. Fuse box key does not. Pulled relays one by one and light stays on. CHMLS fuse that Mitchell shows after relay has power at all times. Brake light switch is working fine. Any help you can give. Thanks,
1997 Geo Metro 1.0L Cuts out VIN: 2C1MR2265V
This vehicle ,after warm accelerating at 55 if I decelerate and than just start to push back on the gas pedal .The Geo will lose voltage to the injector,after you coast a little bit to about 45 mph voltage will kick back in to the injector.The car idles fine.I...
2000 GMC Sierra 1500 SL 4.8L Misfire VIN: 2GTEC19V8Y
This truck will miss on cylinders 1,3,5,7, sometimes.This may happen several times a day or only every 2-4 days.This just came from another shop.They replaced fuel pump,fuel pressure regulator,o2 sensors .Is there anything common to look for.Backpressure is ok... Trouble codes: P3000
2000 Oldsmobile Intrigue GX 3.5L air temp VIN: 1G3WH52H8Y
Really a wierd one. I am getting cold air out of pass side, luke warm air from drivers vents. Actuator is working. Removed actuator & can manualy open & close door. Perfect heat on both sides when the door is moved to hot. Any help would be helpfull Thanks in...
1991 Pontiac Firebird 3.1L No Start, Cuts out, Stall VIN: 1G2FS23T9M
this vehicle was brought to us form another shop and had already been to another one for before that. his original complaint was cutting out and stalling. when it got here that is what it did also. it would idle, and rev slowly to about 200 rpm. but if you rev... Trouble codes: 33 (Map sensor voltage high)
2000 Pontiac Bonneville SSEi 3.8L Stall VIN: 1G2HZ5410Y
Looking for help on this 00 bonneville with supercharged 3.8 v6. Every so often dies. We noticed it loses fuel pressure when it dies. Checked and found fuel pump still has 12v to it but is losing its ground through the fuel pump module that is in the trunk. We...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Cadillac Seville STS 4.6L power windows VIN: 1G6KY54971
thank for all the help.found to be a bad drivers door module.thanks again for the help. james
1995 Chevrolet K1500 5.7L Hesitation, Stall VIN: 2GCEK19K2S
well this one is done, dan [...] had the correct idea asto what was happening whit this truck. the ect sensor was corroded and connector terminals spread,loose fit. seems this old truck has no code for open-40 ect.was intermitantly loosing conn...
1999 Chevrolet Blazer 4.3L Heater VIN: 1GNDT13W5X
Well thank you for all the help advice I have to come to the grim reality that I have to inform the customer they need to buy a heater core. thanks again
2003 Chevrolet Venture LS 3.4L traction control VIN: 1GNDXD3E93
Thank you for all you help. Yes it was the connector at the right speed sensor. We also found the rear brakes did not have enough free play. Repair connector and backed off rear brake adjustment.
2004 Chevrolet Venture LS 3.4L transmission VIN: 1GNDX03E94
determined tranny was slipping. customer doesnt want to fix at this time
2006 Chevrolet Equinox LS 3.4L range sensor VIN: 2CNDL23F16
It's finally fixed!!! Here's how it played out: I carefully put the wiring harness from the tcm to the pnp switch back together.As two replies suggested, I then inspected both tcm connectors for the presence of dielectric grease.There was gobs of it packed int...
1999 GMC Sierra 1500 SLT 4.8L transmission VIN: 2GTEK19V6X
This one appears to be fixed. Special thanks to Dan. I was using a snap-on modis scanner. I borrowed my friends solus pro, and as Dan stated the PCM was indeed commanding 1st gear. I reset the trans adapt data and drove the truck home. It seemed to shift ...
2003 Pontiac Grand Am GT 3.4L Cuts out, Stall VIN: 1G2NW12E73
We went through and cleaned all ground connections and drove it about 100 miles and no stall. Customer has not had it happen since so we're calling this one done.
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