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Prev Professional Automotive Repair Technical Discussions for September 24, 2009
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L engine VIN: 1G4HP52L9S
Hi I have a 95 lesabre with rod knock. I have been told I can only swap with a 95 3.8 from many junk yards but nobody nows what the difference is from a 94 they just say it wont work .I have a 3.8 from a 94 I was just wondering if anyone knows what is differen...
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2000 Buick LeSabre Custom 3.8L radio door locks a/c VIN: 1G4HP54K3Y
hello need help . 2000 lesabre upon starting vehicle after say 5 or 6 seconds. radio goes out. door locks inop.security light comes with airbag,brake,service vehicle soon traction control light's gear indicator numbers light up but will not indicate gear posit...
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2002 Buick Rendezvous CX 3.4L Starting VIN: 3G5DB03E62
Hi all, car was towed in for no Start/no Crank, Jump starter relay car cranks no start, no ground to starter relay from pcm, hook up scan tool no communication to pcm, i can access bcm/abs/air bag no problem, check hot and grounds to pcm ok, check starter sign...
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1990 Cadillac Fleetwood 60 Special 4.5L no blower motor opperation VIN: 1GSC65333L
this one has me worked up. vehicle came in with no blower opperation. replaced blower motor worked for about 30 sec. in vehicle then quit. checked for power to blower motor no power, has ground. reading the diagrams that i have shows ppl/wh is power from body ...
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1998 Cadillac Seville STS 4.6L ign.switch VIN: 1G6KY5493W
hello fellow techs, i have a caddy in need of an ignition switch, mitchel says to remove steering column, but i can`t see how that will give me any room to remove switch. i was just wondering which is the best way to remove & replace this switch, i have alread...
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1990 Chevrolet Lumina 3.1L No Start, Poor Idle Quality, Cuts out, Stall VIN: 2G1WL54T5L
Hello all. Todayís crisis is a 90 Lumina thatís running poorly. Car runs fine for some time after starting, goes into closed loop without any problems. After running for a while, it starts idling lousy and wonít accelerate. When the pedal is pressed it will st...
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1997 Chevrolet Blazer 4.3L Hesitation, Misfire, MIL Lamp on VIN: 1GNCS13W1V
One yr later here it sits with the same p0300 and its misfiring on cyl #3 & #4. #4 is the worst with a count of over 1700. #3 is around 350 and all others are at 0. ive watched the o2 sensors. post cat sensor indicates bad cat. Checked for back pressure no mor... Trouble codes: P0300 (Multible engine missfire), P0172 (Bank 1 Rich)
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1997 Chevrolet Monte Carlo Z34 3.4L Cylinder Heads VIN: 2G1WX12X8V
This car came in on a wrecker. It was overheated. Turned out the no.1 cylinder had a blown headgasket and was burning coolant. Customer didn't have the money for repairs, and was going to send it to a junk yard for 100.00 dollars. I gave him 200.00 for it. Nic...
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2000 Chevrolet Silverado 1500 4.8L Instrument Cluster VIN: 1GCEC14V0X
Problem is intermittent. Driveability is NOT affected. It started with the "SECURITY" telltale turning ON and OFF(not flashing) while driving. Also, now have the Airbag telltale coming ON and OFF. At times the fuel gauge will peg to "E" and when it does the Lo...
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2001 Chevrolet Silverado 3500 6.6L indicator light VIN: 1GCJK33141
when selecting 4wd indicator on dash blinks in 4wd low and high, but 4wd seems to engage as it should. no codes stored. 2wd acts fine and light is on steady when 2wd is selected. why is it blinking and not steady after locks in?
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2002 Chevrolet C5500 6.6L No Start, Cuts out VIN: 1GDE5F1163
Driver complaint is engine dies on decell on expressway after 100 to 200 mile drive. 3 times has happend. 400 to 500 miles between accurance. truck is driven almost all long trip hyway. When it happens engine dies and won't restart unless you prime fuel filter...
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2002 Chevrolet Suburban 2500 LT 6.0L Misfire, MIL Lamp on VIN: 2GNGK26U62
at the end of my rope with this one. random misfire code po 300 will set along with a flashing ses light when under load at highway speeds. misfire counters show heavy misfires on cylinders # 5 and 6, and moderate amount of misfires on cyls. 1 and 8. no engine... Trouble codes: P0300
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2003 Chevrolet S10 LS 4.3L MIL Lamp on VIN: 1GCCT19X53
check engine light flashes intermittently during highway use
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2004 Chevrolet Colorado LS 3.5L air bag VIN: 1GCDT19664
Hey guys thanks in advance for your help. WE DO NOT DO ALOT WITH AIR BAGS and this is confusing. the customer took this to the dealer down the street and told him that there was a broken wire and to come back. Well now the dealer has gone out of bussiness and ...
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2006 Chevrolet Express 3500 6.0L TRANS temp VIN: 1GAHG39U67
Good afternoon this vehical came to us on the hook with the trans destroyed.(complete gear train componets replaced)after rebuild along with torque converter we installed unit test drove vehicle shift good and lock up no rpm slip.we then check cooler flow and ...
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1996 GMC Safari 4.3L P/S pump VIN: 1KGDM191TB
Hi all, hope someone can be of assisstance. Thi 96 Safari, has a whining powersteering pump. Months ago, the original pump was replaced with a remanufactured unit (CARDONE), due to noisey condition (whining). It came back immidiately, whining once again. We ar...
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2001 Oldsmobile Alero GL 2.4L ignition VIN: 1G3NL52T81
This car sat for around 6 months.Customer finally got enough money for us to work on it.Put ignition lock cylinder in and did a relearn.Car would not start so i took the ignition module from another car to try and car started right up.Sat and ran for a aout 30...
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2000 Pontiac Montana 3.4L fuel guage VIN: 1GMDX03E6Y
fuel guage will go from 3/4 tank to full,sometimes float between the two readings,customer says 3/4 tank should be accurate,i could duplicate problem at connector in floor by passenger rear seat,so i proceeded to hard wire purple wire and ground around that co...
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2007 Pontiac Solstice 2.4L Misfire, MIL Lamp on VIN: 1G2MB35B47
what happens is that for the first 2-3mins of running oxygen sensor upstream is switching properly and then it will go to 10mv and just sit there no switch no nothing, downstream oxygen sensor reads almost 1000mv while problem is occuring. now being a flood vi... Trouble codes: P0171, P0300
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Century Custom 3.1L Starter VIN: 2G4S52M8W1
Well this one just kept getting better and better. I had checked the switch before but this time I looked at it in a different way. When the switch was turned to the on position I noticed that there was about 5v on the start circuit so I pulled the crank fuse ...
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2003 Buick Rendezvous CXL 3.4L Driveshaft VIN: 3G5DB03E43
I took out the rear driveshaft and lubed the splines with silicone grease and changed fluids in the rear differential and tranaxle. The clunk has nearly gone completely. Customer is very satisfied. Thanks, Bob
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2006 Buick LaCrosse CXL 3.8L No Start VIN: 2G4WD58246
hey guys thanks for all the tips. found problem. found customer left out important facts. 1st car would not start AFTER he shut it off at home after his daughter had bought fuel somewhere. went and retested everything. found 2nd sample of fuel contaminated cou...
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2001 Cadillac Seville STS 4.6L Steering Wheel Shake VIN: 1G6KY54931
Thanks everybody for your help and advice. Many of you suggested making sure the cradle wasn't out of alignment or damaged and suggested the rack & pinion may be the source of my problems. I think you were right. This car had been damaged on the right side a...
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1985 Chevrolet C10 Scottsdale 5.7L Mechanical VIN: 2GCDC14HOF
Thanks for the responses, folks! Responses varied as to whether or not plugging off the cooler will cause immediate concerns. TV cable adjustment seemed ok or very close. He may see about putting in a 350 or 400 transmission instead (dunno which will swap)...e...
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1999 Chevrolet Silverado 2500 6.0L Low speed ABS activation VIN: 1GCGK29U7X
Thanks to Andrew Gibson for his insight to this system in the TDF. I never thought that setting the tire size to what is mounted on the vehicle (265/75/16) would be the wrong thing to do. I needed to set the calibration to the OEM size of 245/75/16 from the ...
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1999 Chevrolet Express 3500 5.7L Torque Converter VIN: 1GB4G31R7X
I do belive this one is done and gone. Customer picked it up this afternoon and have not heard anything from him as of yet. The cure was in the transmission cooler. I had flushed the cooler with trans. flush and used a blow gun on it and I did not see or feel ...
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1999 Chevrolet Corvette 5.7L Running lights VIN: 1G1YY12G9K
well no one said they Had this happen to them, the recommendation of "riggin up a relay" is a GREAT idea. so it is done. thank you it would seem that there are two kinds of vettes in this world. really really nice or junk. unfortunately this is a really really...
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2001 Chevrolet Silverado 1500 4.8L Poor Idle Quality, hard start VIN: 2GCEC19V91
thanks to all that replied. I REPLACED THE FUEL PUMP THEN THE PRESSURE CAME UP AND THE PROBLEM WENT AWAY.
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2002 Chevrolet Silverado 2500 HD 6.0L Misfire VIN: 1GCHK29U92
THE INTAKE MANIFOLE WAS WARPED & I HAD IT PLANDED AT THE MACHINE SHOP BUT THEN I COULD NOT GET TO SEAL, & I WAS USING THE NEW FLEPRO METAL WITH RUBBER GASKETS. I BOUGHT THE DORMAN MANIFOLD & INSTALLED THAT, BUT THAT DID NOT SOLVE THE MISFIRE ON # 7&8. I REPLAC... Trouble codes: P300.
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2004 Chevrolet Silverado 3500 6.0L MIL Lamp on VIN: 1GBJC34U54
O.K. guy's let me summarize. For Steve, Robert, John, and David, we did the wiggle-jiggle-pull-push on all wiring related to and some not related to the effected sensors to no avail. For Eric, We visually inspected for wires that would interfer with the readin... Trouble codes: P0101 (MAF senser circuit).
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2004 Chevrolet Silverado 2500 LT 6.0L MIL Lamp on VIN: 1GCGK23U44
Several good ideas for a fix were submitted. We again removed the ground straps, cleaned them and re installed with star washers. While the customer was driving, the alternator quit. One suggestion was low voltage; with the alternator repair we thought we m... Trouble codes: P1516.
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2004 Chevrolet Suburban 1500 LS 5.3L oil pressure VIN: 3GNEC16T64
Thanks for all the help on this request. Ended up changing the engine and all is well, oil pressure normal. Thanks
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2005 Chevrolet Malibu Maxx LT 3.5L front turn signal lense VIN: 1G1ZT62825
Well its been 2 weeks and it seems all is well. As mentioned there is a tsb about using specific bulbs(osram) on this modle so we orders some up from the dealer and there is no signs of overheating. The tsb doesn't say it is to adress this issue but the bulbs ...
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1998 Pontiac Grand Prix GTP 3.8L Starting VIN: 1G2WP5213W
Thanks to all of you who responded and the good suggestions. I was able to get this lock cylinder out by using a pick to jiggle the tumblers. I then used a pliers on the housing of the lock cylinder to rotate it back and forth and it finally broke free and rot...
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2005 Pontiac Aztek 3.4L horn VIN: 3G7DA03E45
You guys are awesome! Thank you Randy and Brian for your quick responses! It looks like I have one of the ones with a single horn. Thanks again!
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2000 Saturn LS1 2.2L suspension strut mount VIN: 1G8JU52F8Y
Customer to return after OEM spring and sturt plate arrives. Will repair accordingly to Saturn.
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