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Prev Professional Automotive Repair Technical Discussions for July 14, 2011
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Open Help Requests for GM
Help Request Answers
1989 Cadillac DeVille 4.5L r 12 VIN: 1G6CD1158K
local cadalic dealer said r12 only for a recharge.no other possibalites. can a orfice tube be added for a higher low side pressure? thanks in advance, dale.
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1991 Chevrolet Camaro RS 3.1L No Start, Stall VIN: 1G1FP23T0M
Customer stated vehicle starting bucking and had brown smoke coming from the exhaust as he traveled down the road. He parked it at a public lot and walked over to our shop across the street explaing his problem and also stating that his friend had just done a ...
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2003 Chevrolet Silverado 2500 HD 6.0L Stall VIN: 1GCHK23U63
6.0 liter bi-fuel..Mitchell is giving me minimum 130 psi for bi-fuel engine,110 for cng & 55 to 60 psi for gas engine.So my question is..With fuel pressure guage attached to port on the rail ,my readings should be what? I am thinking 55 to 60 because the engin...
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2006 Chevrolet Silverado 1500 WT 4.3L clutch won't release fully VIN: 3GCEC14X66
we pedal bled them and then vacuum bled the system.still won't release.if you mash the pedal into the floor mat it will release but engages again as soon as pedal leaves the floor mat. The pedal is plastic, but looks OK.
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2006 Chevrolet Impala LT 3.5L Stall VIN: 2G1WT58K06
Hey all, been working with this vehicle for a few days now. After being driven for at least 30 minutes it will stall but always restart. It would set a p0601. the problem would happen even if it was allowed to run in our shop stall for the same amount of time.... Trouble codes: P0601
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2006 Chevrolet Colorado LT 2.8L Misfire, MIL Lamp on, Poo17 VIN: 1GTCS14866
Truck has constant p0017 code,missfire counter has miss cyl 2,cmp and ckp data both constantly vary between 250-0, is this normal?? cmp actuator was replaced,crankshaft bolt is tight-modis said to check this,anyone have any ideas?? Trouble codes: P0017
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2007 Chevrolet Colorado LS 2.9L tranny VIN: 1GCCS14997
makes noise when cold.i am thinking it might be toque drain back ball or torque it self.when drive tranny shifts like brand new.noise goes away when worm.this noise only happens when it sets over night.
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2003 Saturn Vue 3.0L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 5GZCZ63B43
This is one of my long time customers, she came in just for some simple service work, Timing belt and water pump, the job seemed to go well, when I started the vehicle, I first notice an extended crank that wasn't there previously, the car does start but runs ... Trouble codes: P0341 (CMP Sensor Circuit Out Of Range)
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Fixes & Summaries for GM
Fix/Summary Answers
1991 Cadillac Allante 4.5L Electronic VIN: I12KLMFPRE
Well, I determined the bcm to bad. Sent to dealer to have it replaced and they found a mice nest all in and around the puter. Wires chewed. Replaced bcm and fixed a few wires and all is well...thank you to all that replied.
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2001 Cadillac DeVille 4.6L No Start, Cuts out, Stall VIN: 1G6KD54Y71
Turns out the NAPA sensors were junk. Replaced them with GM sensor and relearned crank pattern with Verus. All is well. Thanks for the great tips.
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2003 Chevrolet Silverado 2500 HD 8.1L Unknown VIN: 1GCHK23G43
Well Techs, the long and short of it is that this vehicle need a Condenser. A new one fixed all the problems. I guess when driving the head pressure would go high enough to shut down the compressor. Thanks All !!!
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2003 Chevrolet Trailblazer LT 4.2L vent VIN: 1GNET16SX3
thanks for the replies but the actual help cane from the knowledge base because the dealer gave me the wrong part & caused the unusual problem of only one side of the vents working. The actuator they gave me the first time had 4 prongs and the right one has 5...
2
2004 Chevrolet Cavalier LS 2.2L Clutch VIN: 1G1JC12FX4
Thanks for all the suggestions. Turned out it was the Slave, it had puked a seal out on the back side, surprisingly it didn't leak? New Slave and all is well. Thank you to each and every one of you who responded...all were great suggestions and I did try ea...
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2005 Chevrolet Equinox LS 3.4L warning lamps VIN: 1G2N5F4576
Thanks to all who responded, Dave, Mark, and Rob hit the nail on the head, BCM not broadcasting full vin on the bus, shorted battery cables together for 30 seconds and lights were then out. These lamps were on ever since an EGR dtc was cleared in the pcm. Now ...
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2005 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK23295
Thanks for the input. I first replaced the BCM with a used one. Then programmed with GM SPS. Security light still on. I knew the BCM was commanding the light on. I called Identifix. The guy was very blunt in telling me that I couldn't use a used module. So I r...
5
2007 Chevrolet Silverado 1500 LT 5.3L Door Locks, Radio, Gauges VIN: 2GCEC13J77
WE PULLED ALL GOUNDS AND CLEAN THEM. DID NOT FIND ANY LOOSE OR DIRTY GOUNDS. SINCE IT DID NOT DO IT IN SHOP WE TURNED IT LOOSE. TRUCK DRIVES ALOT OF MILES AND OUT OF TOWN ALOT. BUT HAVE NOT HEARD ANY BAD NEWS SO IT MUST BE FIXED. THANK YOU
7
1986 GMC S15 High Sierra 2.5L Excessive Emissions, Poor Idle Quality, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GTCT14E7G
WHEW!!! Turned the key and it runs like a fine Swiss watch. I had a bunch of great suggestions on this nightmare... Special thanks to Justin [...], who wrote a great reply about his own experiences owning a mini-truck with this Pontiac 2.5 motor.. He turne... Trouble codes: 33 (Map signal voltage high).
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2003 GMC Sierra 1500 4.8L Cuts out VIN: 1GTEC14V63
The day after posting our help request one of our techs logged on and read about cleaning the throttle body. He removed the throttle body and cleaned out the air passage and throttle plate removing all the carbon build up, reinstalled the throttle body and ve...
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1996 Oldsmobile Cutlass Supreme 3.1L MIL Lamp on VIN: 1G3WH12M2T
Well , My Bad. I incorrectly assumed that the sensor pulled a 5 volt , ecm generated, signal to ground like Chrysler or Jeep vehicles. The replacement ecm had battery voltage on the signal wire but the sensor was only pulling it down to 11 volts. A new cam se... Trouble codes: P0341.
3
2001 Pontiac Grand Am SE 2.4L no start VIN: 1G2NF52T21
Sent to the dealership and they put the new bcm in and flashed it,good as new. I will wait till I can spend the money for the equipment and not have it hurting my cash flow right now.
3
2001 Saturn L300 3.0L No Start VIN: 1G8JW52R01
There were two problems found. Found ECM not communicating. Had great power and ground and mounting bolts were tight. Replaced ECM and fuel gauge began to work and had communication. Had power to fuel pump relay and to the fuel pump. Still no fuel pressure. Us... Trouble codes: B2623 (u2105-), U2105 (b1000-), B1000 (u1000-), U1000 (u1016-), U1016 (u1024-), U1024.
3
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