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Prev Professional Automotive Repair Technical Discussions for February 8, 2008
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Open Help Requests for GM
Help Request Answers
1994 Buick Park Avenue 3.8L windows VIN: 1G4CW52L2R
i have a car that intermmittantly dies as driving and will not restart until after setting.when car originally arrived with problem also had check engine light and code po325.found incorrect prom causing check engine light.that problem is now corrected.car has...
1998 Buick LeSabre Custom 3.8L Poor Idle Quality VIN: 1G4HP52K6W
hi gm techs.I have a car here im not sure of.2 days ago came in with heater not working.Found radiator 1 gallon low on coolant.filled with water and heater started working fine.replaced radiator because of small leak at seam.Water pump has small leak but didnt...
2004 Buick Rendezvous CX 3.4L lock cylinder VIN: 3G5DB03E44
one day the lock would not turn into any position but lock. shook steering wheel, jacked front wheel off ground, but no luck. alldata provided no information on how to remove the lock cylinder. your help will be much appreciated.
1994 Cadillac Seville SLS 4.6L Digital Part of the IPC VIN: 1G6KS52YXR
Hello all. Car came in with the ipc inop. The ipc fuse was blown. Tried a new fuse and the ipc came back to life for about 30 seconds and blew again. So I told the coustomer that we would have to find out what is causing the fuse to blow. As I was telling him ...
1996 Chevrolet Corvette 5.7L horn VIN: 1G1YY22P8T
hello everyone I have a vet here that has some what of a strange problem what the car came in for was horn not working and had not worked for years so figured simple right wrong got to horn relay and found no ground coming from horn swithces in steering wheel ...
1996 Chevrolet Lumina LS 3.4L Poor Idle Quality, Surge, Cuts out, Stall VIN: 2G1WN52X2T
the car came in with a complaint of dieing out and hunting idle we checked for vacuum leaks and found the pcv hose under the intake leaking so we replaced it no change so we than checked and replaced the timing belt do to it missing about half the belt it was ... Trouble codes: P1642, P1441, P1401, P0441, P0300, P0135
1997 Chevrolet Malibu 2.4L Stall VIN: 1G1ND52T1V
Hi to all, THANK YOU in advance for any help on this. We have a 1997 malibu with a 2.4l that will stall on decel only as you come to a stop. If you can catch it at the right time and give it throttle it will stay running. We have repaired all broken vacumn lin...
1999 Chevrolet S10 4.3L water pump gasket failure VIN: 1GCCT14W6X
Cannot get waterpump gaskets to seal after replacing intake gaskets and waterpump. Tried orange sealant, gasket appears to split and squeeze out. Then tried yellow weatherstrip adhesive(with blue teflon type gasket). Tried locktite on bolts. Gasket always appe...
2000 Chevrolet Silverado 1500 4.8L No Start VIN: 2GCEK19V8Y
Truck came in with cylinder #2 & 7 skipping. I put on a new computer and that fixed the skipping but would it would not crank every time, sometimes it will spin and spin , wait 30 seconds and then it will crank, I got another new computer and it does the same ...
2004 Chevrolet Suburban 1500 LS 5.3L power steering system VIN: 1GNEC16T64
This Suburban has a noise while turning the steering wheel in the service bay or out on a road test. The best that I can descibe this noise is like something is rubbing on the steering shaft. Not exactly like a pump whine or groan but somewhat similar. The noi...
2005 Chevrolet Astro 4.3L rear turn signals\brake lights VIN: 1GCDM19X35
Hi again folks-this one seems to not have a mechanical answer.This Astro Van eats rear turn signal\brake light bulbs.It is a Fleet van used to repair business machines.There are no racks or anything in the back & it is not loaded up with material.We have teste...
2005 Chevrolet C4500 Kodiak C4E042 6.6L handling VIN: IGBE4E1275
before i decided to replace the rear tires, i had a near dead experience on the freeway, cruising at 75mph i change lanes (it was raining)to my left, when suddenly my rear end started started sliding, i was able to control before hitting the center devider aft...
2006 Chevrolet Colorado LT 3.5L MIL Lamp on VIN: 1FTUX17216
truck has been in a few times with this code. when it is here everything checks out ok. has anyone seen anything common for this code? p.s. i forgot to get the vin# so i had to make one up to get here. i have a friend that works at a chevy dealer & he ran the ... Trouble codes: P0108 (map sensor voltage high)
2006 Chevrolet Colorado LT 3.5L Poor Idle Quality, Misfire VIN: 1FE3HI82I6
This is my parents truck and they live out of state so all the info is not correct. The problem is a rough idle that feels like it is misfiring. Increase RPM's and it goes away. After reading some past fixes we were concerned that the head was bad. the first t... Trouble codes: P0300
2007 Chevrolet Suburban 1500 LTZ 6.0L climate control VIN: 1GNFK16357
the dual climate control, intermittanly, will blow cold out the left two vents and hot out of the right two vents - does not matter what temp. setting you put it at.
1997 GMC C1500 Sierra SL 5.7L MIL Lamp on VIN: 2GTEC19R8V
Truck came in with a P0141 Code (02 B1S2 O2 Heater) and replaced O2 sensor (behind cat)--returned 2 days later same code -- checked heater of O2 by resistance measurment (was OK) -- This time checked voltage at all O2 sensors and found B1S2 connector losing p... Trouble codes: P0141 (O2 Heater Inactive)
1998 GMC Jimmy Envoy 4.3L security system VIN: 1GKDT13W6W
thanks for the help in advance, after replacing the passlock sensor and the ign tumbler I ran through the relearn procedure and the jimmy starts and runs fine but the security lamp says on all the time, I checked with customer and the lamp had been on for a wh...
1998 GMC Jimmy Envoy 4.3L Fuel Gauge VIN: 1GKDT13WXW
Hello Everyone, Have a fuel gauge on a 1998 GMC JImmy that shows empty with the low fuel light on while driving and will stay on full while just sitting still and idling, and while driving at times it will go from full to Empty and back the other way. And als...
1996 Oldsmobile Cutlass Supreme 3.4L electric cooling fans VIN: 1G3WH52X1T
Customer complaint, engine cooling fan stays on sometimes after turning off key (NOT temp related... it's minus 25 degrees celcius here... #%@#!&^ cold...)will continue to run, ten minutes or more until the key is reinserted and turned to 'run' then stops stra...
1996 Oldsmobile Cutlass Supreme 3.1L blowing fuse
hello all, Sorry,I forgot to get the vin.2 days ago this 1996 0lds cutlass supreme 3.1L came in with 3 codes for evap purge soleniod crt.,MAF low frequency and #2 fan relay.I found out it uses the same pink wire that lead to 15amps ignition fuse located on rf ...
1999 Oldsmobile Bravada 4.3L Misfire, MIL Lamp on VIN: 1GHDT13W4X
OK,I think i should have left this one alone but i did not.it had been looked at by someone else and the customer told it had a burnt valve,i was asked if i wanted to fix it-without seeing it i suggested just get a head and i'll install it and then it'll go qu... Trouble codes: P0300 (p0440-), P0440
2001 Oldsmobile Intrigue GX 3.5L Stall VIN: 1G3WH52H61
This car has a very intermitent stall at stops and around corners during city driving.It will fire right back up. It is normally a sweet running car. There are no fault codes. A couple of times at start up it ran rough and all the dash warning lights flashed f...
2002 Oldsmobile Silhouette Premiere 3.4L Misfire VIN: 1GHDX03E72
Van was running fine for the customer on wednesday. Then all at once it started to run bad, and the check engine light came on. I scaned it, and it came up with a #3 misfire. I put an inline park tester and found spark from the coil. Replaced that plug and wir... Trouble codes: P0300, P0203, P0440
1993 Pontiac Bonneville SE 3.8L Cuts out, Misfire VIN: 1G2HX53LXP
fellow techs i have an intermittent stall out and a misfire that take place at any time. the engine can be cold or hot, the stall out, when it occurs always happens after deceleration,(turning a corner) and then stepping on the gas. the engine will start right... Trouble codes: 17 (spark reference problem), 18 (camshaft crank error)

Fixes & Summaries for GM
Fix/Summary Answers
1990 Buick Reatta 3.8L Blower and vents VIN: 1G4EC13C8L
The problem wound up being the alternator, it was making a lot of noise and putting out smoke, which would come up out of the engine compartment near the front windshield so the customer thought it looked like smoke from the dash. By the way, some of the repl...
2000 Cadillac Seville SLS 4.6L Air bags VIN: 1G6KS54Y4Y
Thanks to all who responded to my Q's. Thanks Rob [...], had the new SDM reset with a Tech II and alls well. Thanks again to all who helped. Mike.
2004 Cadillac SRX 3.6L Drive-axles VIN: 1GYEE63774
Yes it was the Transfer case. We disassembled it, put in a new chain and gear set. Noise is gone, the other three parts look fine. Poor mans' all wheel drive, 50/50 split, using traction control, should have a disclaimer on the visor.
1964 Chevrolet Corvette 327CID Hesitation VIN: 40837S1090
Wow, I've been a member for a long time and never got as many responses as I did on this one. I like to reply individually, but just too many. Lots of good suggestions including checking mechanical advance (OK), checking accelerator pump (OK), using manifold...
1989 Chevrolet K3500 Cheyenne 7.4L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 2GCGK39N8K
found bad fuel pump thank you all your help found the problem useing lab scope had bad wave form replaced pump and ran like a top. Trouble codes: 44 (lean exhaust).
2000 Chevrolet C3500 7.4L Misfire VIN: 1GBKC34J5Y
A couple of you recommended injector connectors but had replaced them all ready. One recommended new injectors and I think is what it needs. I did cut open the harness over the EGR to check for broken or melted wire but I had already repaired them a year ago a...
2004 Chevrolet Silverado 1500 LS 5.3L 4x4 VIN: 2GCEK13T04
Good Friday to all, A special thanks to everyone that read and/or replied to my help request. Most popular was the switch,I have replaced several also. I ordered one but the gal lost her job-the only contact that I had for her. Alex and Rusty brought up the po...
2005 Chevrolet Malibu LS 3.5L Electrical Drain VIN: 1G1ZT54825
Curtis from Canada had it right. Replaced the ICBM and flashed took care of drain.
2005 Chevrolet Impala 3.4L Drive-axles VIN: 2G1WF52E35
it is only one side needing replaced.i torqued axle nut to 118# and will drive car a week and recheck torque and for any play then decide if i need to set tighter ,thanks to all.
1995 GMC C3500 Sierra SLE 6.5L Cuts out, Stall VIN: 1GDKC34F4S
Thanks to all that replied. The vehicle is fixed. I back probed green wires in big connector at firewall spec is 2.3 volts +/- .5 volts. There is two green wires and one red wire in this connector that i was looking at. They should have the same voltage readin...
1997 GMC Yukon SL 5.7L Hesitation, Misfire VIN: 1GNEK13RGV
Tried all the help advice, including driving with Mass air flow unhooked made no change. Ordered computer and first one out of the box would not start truck. Second computer ran truck but had dead miss on number 8 cylinder and set transmission code for pressur... Trouble codes: P0131 (voltage low bank 1 sensor 1), P0137 (voltage low bank 1 sensor 2), P0133 (slow responce bank 1 sensor 1), P0134 (slow responce bank 1 sensor 2), P0300 (misfire detected).
2004 GMC W3500 Forward W3S042 6.0L wont crank VIN: 4KDB4B1U24
Well this one got me mad, a big headache, and just plain flustered. After figuring out these trucks use same computer as regualr 3500 Sierra w/6.0L. so after finally figuring out that the crank wire goes to the PCM and the start wire goes from the computer to ...
2001 Saturn L100 2.2L Excessive Emissions, Hesitation, Stall VIN: 1G8JR52F61
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