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Prev Professional Automotive Repair Technical Discussions for December 14, 2005
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Open Help Requests for GM
Help Request Answers
1991 Buick Riviera Luxury 3.8L ecm VIN: 1G4EZ13L6M
Error Code 42 - Followed AllData's chart including changed plugs and wires, checked ignition coils, checked ignition module, ecm connections, wiggle test, etc... Would start then die. When we came in this morning, it started right up and ran for a few minute...
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2003 Buick Rendezvous CX 3.4L MIL Lamp on, radio locks, VIN: 3G5DA03E62
Customer had the battery change, and then started to act up --- when starting the vehicle the Driver's message center at instrument panel reads"service engine soon"Not the MIL, the radio screen reads LOCKED,while engine running, and when we turn the car off an... Trouble codes: P1189 (Engine oil pressure switch ckt.), P1811 (Maximum adapt long shift execution time), U1064 (Loss BCMVTD DIM /or SBM dataRadio IPC SDM.), U1040 (Loss of EBCM communication), U1016 (Loss of PCM communication), U1000 (No class 2 response)
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1993 Cadillac DeVille 4.9L heater core VIN: 1G6CD53B4P
this vehicle came in with no heat complaint checked obvious things first coolant level ,radiator cap ,t-stat was bad replaced t-stat and radiator cap,still no heat checked water flow to heater core one hose hot one cold,as usual for this vehicle the heater cor...
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1987 Chevrolet V10 Custom Deluxe 5.7L No Start, Cuts out VIN: 1GCEV14HXH
Getting fire to plugs and fire at the injectors .Tried the fuel pump prime at the relay and still cant get the pump to run .
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1992 Chevrolet Cavalier Z24 3.1L No Start, Cuts out VIN: 1G1JF14T5N
This vehicle will die going down the road just like someone shut the key off.Also will just die idling and will not restart.It seems to happen shortly after a cold start while car is still in open loop. O2 sensor takes forever to start switching & get out of o...
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1996 Chevrolet Tahoe LS 5.7L Drive Line VIN: 1GNEK13R2T
Customer complaint of growl noise from under vehicle after a loud pop noise. Checked rear end and found broken center shaft, posi governor+pins, shaft bolt fell out causeing above problems, replaced all parts and fluid, and additive, test drive, still has grow...
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1997 Chevrolet Monte Carlo Z34 3.4L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 2GN4W57XWV
customer came into my shop with this vehicle several weeks ago. It was towed in as a no start, but the engine would crank. I found that the fuel pressure regulator was leaking and replace it, also had a coolant leak at the throttle body that was leaking into e... Trouble codes: P0300 (Random cyl. misfire)
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2001 Chevrolet Silverado 2500 HD 6.0L Surge, Misfire VIN: 1GCHK24V41
truck came for check engin light on code p0300 appear check & replace plug clean injector ,balance test truck run not so much, on road test abiout 65-70 mph truck surge like a gas miss may be my gas pressure is good and delevery too do you think fuel pump may... Trouble codes: P0300
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2002 Chevrolet Impala LS 3.8L ignition lock VIN: 2G1WH55K62
customer has come in 3 times with the complaint that she is unable to remove key from ignition when turning off vehicle.b she states she must move shifter from park to reverse to drive then back to park to remove key. we have never been able to duplicate sympt...
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2002 Chevrolet Venture LT 3.4L heat VIN: 1GNDXD3E52
The blend doors and temp controls seem to be working. Van is running at normal operating temp. Van doesn't seem to have a heater control valve. Anyone seen anything like this before ?
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1995 GMC w4 5.7L Excessive Emissions, Poor Idle Quality VIN: 4KDB4B1A3S
Hello and thanx for your time. This truck ran very poorly and had multiple codes and problems. I made repairs (related repair history,with the exception of fuel pres. reg.) and truck runs relatively well (no dead cyls.) but the emissions are through the roof. ...
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2001 GMC Savana 2500 4.3L belt/ tensioner VIN: 1GTFG25W41
Odd problem here van had a belt noise,.belt was replaced,.shortly thereafter the belt just kinda grenaded,.replced with GM belt,...a few hours later same thing,. now i get the van found bad idler and alt. replace those as well as tensioner and a new GM belt. A...
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1969 Pontiac FIREBIRD 400CID generator light
Trying to turn out the light now and bypass the original regulator wiring. The charging system works with the B+ to the regulator and the B+ terminal or course, but I haven't been able to figure out how to turn off the generator light. It appears that the li...
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1992 Pontiac Sunbird SE 2.0L rr wheel VIN: 1G2JB34H5N
THIS SYSTEM DOES WELL AND PRESENTS NO PROBLEM MOST OF THE TIME. MAYBE TWO OR THREE TIMES A WEEK AT SLOW SPEED (10 MPH) THE RR WHEEL WILL LOCK UP AND LET GO SEVERAL TIMES BEFORE COMING TO A STOP. iT IS A DRAMATIC ACTION AND IS NOT CAUSED BY DRIVERS ERROR, PRESS...
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1999 Pontiac Grand Am GT 3.4L MIL Lamp on VIN: 1G2NW52E4X
Hello techs i have this Grand Am that the SES lamp comes and goes intermittantly.All codes were checked and none were found.The odd thing is that you can clear the codes when the lamp is on and there is not so much as a blink.My scanner tells me the lamp is no...
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Fixes & Summaries for GM
Fix/Summary Answers
1986 Buick Electra Park Avenue 3.8L high idle VIN: 1G4CW69B9G
Well, thanks to one and all for your help...it ended up being the TPS. What threw us, was the fact that even unhooked, it wouldn't change the values. Well anyhow, it's working good now. Thanks again.
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1997 Chevrolet Venture 3.4L Poor Idle Quality, MIL Lamp on VIN: 1GNDX06E1V
Thanks for all the replys. I've not gotten the vehicle back to work on it further. Customer is a little steamed about the whole event, so I'll wait for her return Trouble codes: 507 (Idle rpm too high).
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1998 Chevrolet C1500 Cheyenne 4.3L No Start VIN: 1GCEC14WXW
Thanks! All!! Replaced Fuel Pump Twice as the first one was as noisy as the old one. Anyway, the amp. draw on the new pump was 7.0 amps, compared to 10.2 on the old pump. Thanks again for all the responses!
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1999 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY32GOX
Thanks to those that responded. The car still isn't repaired completly. I found out that besides this car being bought at an action, it also has been wrecked. It has sveral electrical issues. I belive that Layne and I are right about the relay being in the pow... Trouble codes: P0412.
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2001 Chevrolet Impala 3.4L security light on VIN: 2G1WF52E11
Customer brought back car.Checked powers&grounds at bcm checked battery connections.Recomended bcm.Customer declined to repair car at this time.Thanks to everyone who replied.
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2002 Chevrolet Malibu 3.1L Starting system VIN: 1G1ND52J82
Just talked to the customer and she said everything is working ok. First of all thanks for all of the help. About half the replys said ignition swith and the other half said the lock cylinder. I put in the ignition switch and Rob [...] had a good point. He s...
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2002 Chevrolet Trailblazer LS 4.2L transfercase VIN: 1GNDT13S32
well we had tried to power it down and wake it up several times, but no such luck. we replace the transfer case module and had it programed every thing seems ok. thank you for all the help, RON
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1997 Oldsmobile Achieva S 3.1L Ignition VIN: 1G3NL52M0V
Thank you all for help, I used the reset procedure of leaving the key on and it worked. I used the procedure from Allen in North Carolina, Thanks again
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1999 Oldsmobile Bravada 4.3L Cuts out VIN: 1GHDT13W7X
First of all thank you to all who offered help and I am sorry for the delay in closing this help request. I think Jerry [...] and a couple of others who said to look closely at the Crank Position Sensor are probably correct. Unfortunatlly, my ...
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2001 Pontiac Bonneville SSEi 3.8L Stall VIN: 1G2HZ54111
thanks for all the replies, i removed the crank pulley and inspected, all is well there. so on my own hunch and the help from the rest of you, i installed a crank sensor. the new sensor looked a little different on the lab scope than the old one, so my hopes a... Trouble codes: P0336 (crank shaft position sensor no 18x).
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