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Prev Professional Automotive Repair Technical Discussions for February 12, 2008
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Open Help Requests for GM
Help Request Answers
2003 Buick Century Custom 3.1L Misfire, MIL Lamp on VIN: 2G4WS52JX3
Thanks in advance to all, this one got us! This is one of our used cars. We purchased it with a miss and the engine light on. After all the repairs listed it has a miss at idle. On the road it's smooth and powerful, the compression is 115 or so in all cylinder... Trouble codes: P0302
1998 Cadillac Seville STS 4.6L power windows VIN: 1G6KY5495W
replace both front power window regulators and drivers door module.drivers window and all other window and power mirrors and door locks inop from drivers master switch.other windows work from there switches.check power and grounds to drivers module ok.tan with...
1999 Cadillac DeVille 4.6L bpmv VIN: 1G6KD54Y6X
Have this vehicle that has come in with an intermittent ABS light. Found code (C1243 bpmv pump motor stalled) stored in history but not current. Checked system accoring to steps in alldata and it showed all systems good. Cleared codes and road tested vehicle a...
2000 Cadillac DeVille 4.6L Surge, Misfire, MIL Lamp on VIN: 1G6KD54YOY
Can some one please help me out i have a 2000 Cadillac Deville 4.6 Northstar this car is is surgeing like it is sucking air and misfireing on all 8 CYL.(((ONLY AT IDLE)) test Drive car care run Great... FUEL PSI Good I change the intake gasket & ispect intake ...
1994 Chevrolet K2500 Suburban 6.5L Cuts out VIN: 1GNGK26F4R
This truck has 276,000 miles and the problem that I have is that it dies once in a moonwhile, setting no codes. I drove it over the weekend for about 200 miles, and only today monday when coming to work I was going about 20 miles per hour on the freeway I was ...
1995 Chevrolet Blazer 4.3L No Start, Cuts out, Stall VIN: 1GNDT13W0S
vehicle was brought to us after cust has tried throwing parts at it. here is the basis of the problem. with key in the on position, engine not running, fuel pump will come on by itself and injectors will fire. we have scoped powers and grounds to vcm and do no...
1995 Chevrolet K2500 Cheyenne 5.7L pinging VIN: 1GCFK29K5S
engine pings under load at running temp scan tool data when engine pings ks activity yes knock retard 5-8 degrees egr d/s 100% i know this has a negative back pressure egr valve customer stated he gutted the converter could this cause this problem.
1996 Chevrolet Cavalier 2.2L Starting VIN: 1G1JC5240T
hello i have a 1996 caviler with a 2.2L im working on that has a no start condition it will turn over then it will hit really hard almost like its out of time it acts like it wants to start sometimes.i have tried to replace the ignition module to no avail and ...
1998 Chevrolet Cavalier 2.2L Starting VIN: 3G1JC1241W
hi everyone have this 1998 cavalier here it will not start when it is real cold what happens on the dash you lose all the lights but check engine it will start then die when it stalls the check engine light goes off and will not come back on till you shut the ...
2000 Chevrolet Astro 4.3L fuel gauge VIN: 1GBDM19WXY
this van has me stumped, fuel gauge goes to empty when put in neutral or park and goes back to level. can make fuel gauge stay on empty by putting into gear while gauge is down. will stay down until you put it back in neutral or park tnen it will return to the...
2001 Chevrolet Silverado 3500 6.6L No Start, MIL Lamp on VIN: 1GBJK39111
this vehicle came in as a no start. customer states he was driving in normal conditions and heard a pop, the engine shut off, and will not restart. we have checked the codes and the only current code is a po540b (intake air heater). all the other codes are his... Trouble codes: P0540, P0089, P0093, P0102, P0463, P0571
2000 GMC Sonoma SL 2.2L No Start VIN: 1GTCS1957Y
while cranking.shows rpm jumping to 16,000.the crank actual is 170-220 cranking.any help would be great.i dont have much hair left. Trouble codes: P0336, P0340
2001 GMC Jimmy SLE 4.3L MIL Lamp on, Hard Starting VIN: 1GKDT13W71
HELP This is my Father-in Law's car -- So ofcourse not making a big profit here-- HA HA --- Has extended crank most of the time--- codes came on at about 110,000 miles-- changed O2 sensors and did complete tune-up--- ran great-- still does-- but after a week o... Trouble codes: P0172 (System too rich Bank 1), P0175, P0300 (Random Misfire)
2003 GMC Sierra 2500 HD SLE 6.6L all shifts VIN: 1GTHK23173
when the vehcle came in the truck would shift harsh and then the check engine light came on. after doing the ignition switch, transfer case and tranny flush (see related history) the code would not clear out of the tranny, my modis would say error occured, i d...
2002 Oldsmobile Bravada 4.2L transfercase VIN: 1GHDT13S02
1998 Pontiac Sunfire SE 2.2L clutch VIN: 1G2JB1247W
Hi all techs : We did a clutch job on this car,bleed the systems,all good. Release the vehicle to the customer. 2 weeks later,customer come back complaint the clutch pedal went to the floor and gear is grinding. Check for clutch fluid level and external leaks...
2003 Pontiac Montana 3.4L Tail & brake lights VIN: 1GMDX13E23
This Montana has brake lights when the head lights are NOT on. When appling the brakes the high center and the 2 lower lights on the tail light assemblies light but no the top 2. When you turn the head lights on the high center brake and the 2 lower lights lig...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Buick LeSabre Custom 3.8L fuel injection VIN: 1G4HP54C7M
After very extinsive searching and headaches we found that the throttle position sensor ws bad. At times it would read correctly and the engine would start. Whenit would read over 1.0 volt or higher it was a no go. We would unplug the tps and it would start ev...
1990 Chevrolet V2500 Suburban Scottsdale 5.7L Torque converter VIN: 1GNGV26K9L
A new (rebuilt) torque converter fixed this one. Thanks to all who contributed advice!
2001 Chevrolet Suburban 2500 8.1L Cuts out, Stall VIN: 3GNGK26G71
Thanks to everyone on this one. Going with most of the replies I went with the crank sensor scenario and 2 snowmobile trips later the customer and I are both confident that this was the cause. Again thanks to everyone who replied. Sean
1998 GMC Jimmy Envoy 4.3L Poor Fuel Economy VIN: 1GKDT13W5W
Hey guys and girls.Big thanks to everyone who helped.We noted the rear (post) 02 staying around 120-50.Replace 02 and road tested-stays around 350-550 just were it should be.Stands to reason that if he see's too lean coming out of cat then he's going to ask fo...
2002 GMC Sonoma SL 4.3L convertor VIN: 1GTDT13W21
Hello and thanks to all the replies, After having this trans out 3 times it is finally fixed. Most of the replies stated that the frt pump bushing was probably worn or had slid forward against the seal. After replacing the frt pump seal,gasket and O-ring I fou...
2002 GMC Sierra 1500 5.3L front differential
thanks guys the general response was leave it alone that i will do both seals have "seaped" some since it was new but i always ck it at every oil change for level and moisture thanks again maybe somebody will have a dodge problem and i can return the favor
1995 Oldsmobile Aurora 4.0L Poor Idle Quality VIN: 1G3GR6ZC7S
Sorry it took so long to close this . Every time we thought we had it fixed it would show itself again.Thank you all for your input and after some good suggetion we did find a vacume leak at the plentuim .(didnt fix it but had to take care of that) pulled the ...
1995 Oldsmobile Achieva S 3.1L No Start VIN: 1G3NL55M6S
Wow, after a month of trial and error this one is fixed! I have checked every sensor and wire to the computer several times and replaced the crank sensors and computer, still hard to start when cold. I read the 21 help replies several times over (thanks everyo...
1996 Oldsmobile Cutlass Supreme 3.4L electric cooling fans VIN: 1G3WH52X1T
Ok, as it turns out, the customer is heading off for vacation and won't be back in time to allow this request to stay open. Thanks for your help and once the vehicle does return in a month or so, I will email you guys and let you know how it turned out. But I ...
1997 Pontiac Sunfire SE 2.2L whistle VIN: 1G2JB1247V
Closing this post as unfixed as of now. Thanks for the responses, lots of good suggestions for possible cause of noise, but customer has not returned to go deeper into problem. I suspect that I won't see him unless his MIL engine lite comes back on.
2003 Pontiac Grand Prix SE 3.1L Coolant VIN: 1G2WK52J53
First, thank you for the 65 replies. Most said it was the lower ikntake gaskets. Well that is what is was. Changed the gaskets, cleaned the system, replaced some hoses, and things look good. Many also suggested using the new Fel Pro gasket set, another goo...
2000 Saturn LS 2.2L MIL Lamp on VIN: 1G8JS52F6Y
thanks to all who replied but the girl who drives the car went back to college they may bring it back in the spring. I did have a chance to check one of the suggestions i got. when you start the car with the key on and engine off it does not start to drop do... Trouble codes: P0141.
2002 Saturn Vue 3.0L No Start VIN: 5GZCZ63B4Z
thanks to all who took time to read and respond. we did try a crank sensor based on some feedback and we thought that this repaired but it is still acting up. we still don't like the high fuel pressure reading but it is not running rich when it does start so w...
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