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Prev Professional Automotive Repair Technical Discussions for April 3, 2006
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Open Help Requests for GM
Help Request Answers
1972 Buick Skylark 350CID wiring harness VIN: 4D37H2H195
I have this skylark,changing engine,taking out 350-2bl.installing 350-4bl.Buick engines.Wiring & vacumn harness are a mess.If anyone has engine wiring & vacumn harness diagrams I would greatly appreciate also has a/c & vapor canister,all of which were u...
2000 Buick LeSabre Limited 3.8L reverse engagement cold VIN: 1G4HR54K2Y
HELP I NEED SOME GM TRANSMISSION ADVICE!!!This vehicle when cold or left parked for hours will start up fine and idle between 1200-1400 rpm.The idle gradually comes down as the vehicle warms up.If you drop into reverse or drive(during warmup) it will have a ha...
1998 Cadillac Seville STS 4.6L Electronic VIN: 1G6KY5493W
Customer complains of AC off light coming on while driving and AC stops cooling. When light goes off, system cools great. I have scanned with Modis and no codes present. When test drove, we found this to be true. Only parameter in Modis that I can find is for ...
1990 Chevrolet K1500 Cheyenne 5.0L speedo VIN: 1254689898
all info here is incorrect, this is home built vehicle in progress. 1970 Dodge pickup body on 1991 chevy 1500 drivetrain, problem is trying to hook up speedo, trans is vss drive, where the cluster obliviously is mechanical dirven by a cable of course. Can any...
1996 Chevrolet Camaro Z28 5.7L Spark Knock VIN: 2G1FP22P6T
Posting for a local shop. They have a Camaro that runs like a spotted ape but when it is warm and you shower down on the accelerator, you get bad spark knock. The vehicle is running 93 octane. There are no codes and the check engine light is not on. Has anyo...
1996 Chevrolet Cavalier 2.2L rear brakes
the rear brakes lock up when it rains or snows...when it is dry out they just make noise but when it is damp out they completely lock up and the rear end "squat" to the ground violently. we have replaced everything we could think of numerous times we are out o...
1998 Chevrolet C2500 Suburban 7.4L transfercase VIN: 1GNGK26J0W
with the vehicle on the lift, transmission in neutral, transfercase in 2wd, there is a eratic racheting, popping noise coming from the top of the transfercase when turning the rear driveshaft by hand in either direction, also if you turn a half turn then push ...
1999 Chevrolet Tracker 2.0L engine VIN: 2CNBJ13C5X
Hello, thanks for any assistance that you might offer. This vehicle has been maintained by the book and the engine oil used has always been valvoline 5W30 synthetic. The vehicle is towed behind a motor home once a year in summer to the Rockies from Manitoba....
2001 Chevrolet Monte Carlo SS 3.8L air bag VIN: 2G1WX15K21
Hey guys, Not real familiar with this one. I would call it a bad SDM, but hate to buy parts not needed. Has any one ran into this before and am I missing something? I checked archives and very little info on same symptoms. I checked all the seat connections ...
2002 Chevrolet Malibu 3.1L Starting VIN: 1G1ND52J62
hello gents thanks ahead of time for your time this car came in w/a momentary no start it would crank but would not start we have fixed the no start but have not cleared all the dtc we still have a p1352b code that keeps coming back have not found any info on...
1999 Pontiac Montana 3.4L ABS light VIN: 1GMDX03E9X
Hi everyone, this Montana has a abs\trac light on, will not show any current or history codes, will not clear codes or turn off lights, data shows normal except EBTCM batt volts are at 2.5, I can disconnect the module and reconnect, the volts start at 12 and r...
1999 Pontiac Grand Am SE 3.4L headlights VIN: 1G2NE12EXX
I need help on this one badly!!! This car has no right high beam and when it is outside the drl indicator flshes 5to6 times and then the service engine soon light comes on and stays on.I have checked for codes and none were found.i tried 2 new bulbs no change....
1999 Pontiac Grand Prix GT 3.8L Engine/Transmission VIN: 1G2WP12K2X
Noise happens mostly after engine and transmission are warmed up to temp. Sound is loudest between the engine and trans. Did not change when increasing engine speed. Did not change when putting trans in gear. Thanks in advance. Al
2001 Saturn LW300 3.0L remote locks/ headlights/ starter VIN: 1G8JW82R71
Cust came in and said car would not start, said noticed a week ago a light whinning noise while driving,then the next time they drove it the keyless remote would not work. On that trip the head lights and dome lights would flicker while driving also when turni...

Fixes & Summaries for GM
Fix/Summary Answers
1987 Buick Century Estate Wagon 3.8L No Start VIN: 1G4AL8136H
Hi Techs, IT IS RUNNING!! Glen [...] had a magnet t... Trouble codes: 41 (Cam sensor circuit).
1999 Chevrolet Tahoe LS 5.7L Starting VIN: 1GNEK13R5X
george from cali hit it in the head ign switch fixed it thankss to all who replied
2003 Chevrolet Impala LS 3.8L 3800rpm limit VIN: 2G1WH55KX3
thanks for all the help everyone , the pcm was fashed ,and all is well , another happy customer ! !!! this site is a great help. im glad i joined. thanks again !!!
1989 GMC P3500 Value Van 7.4L E.G.R. Problems VIN: 1GTKP32W8K
Thanks for the replies, I have to close this due to time, just got the intake gaskets late last week, had to finish other work before finishing this vehicle. Thanks to our low bid system, parts take a long time to get. Thanks to Rusty for setting me streight a...
1999 GMC Jimmy SL 4.3L Serpentine Belt VIN: 1GKDT13W0X
Thanks for all the help guys. It seemed that the power steering pulley was in about a half inch on the shaft. I pulled it out almost flush with the shaft and installed a new belt. The customer is going to monitor the pulley on a weekly basis for me and will re...
1997 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C8V
I'm embarassed to say what this fix was...this certainly sounds bad...before I embarass myself let me say that one of the first things I did was to remove the duct work prior to the MAF sensor and drive the car (thinking I would eliminate a plugged filter or r... Trouble codes: P0101.
1989 Pontiac Grand Prix 3.1L abs module VIN: 1G2WP11T7K
Thanks for all the advice , it was all good stuff but at the customer request we converted the system to standard power brakes, a simple prociedure. I will use the information about shorted to ground sensors in the future as i get the odd no communication p.c....
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