Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 10, 2007
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers
1992 Cadillac DeVille 4.9L coolant fans VIN: 1G6CD53B5N
hello fellow techs i have this problem with a 92 cadillac both coolant fans dont operate . another tech replaced both coolant fans and still doesnt operate . the problem is when the fans are plugged in the volatge drops down to .4 volt and battery voltage when...
1993 Cadillac Seville STS 4.6L Hesitation, Surge, Cuts out, Stall VIN: 1G6KY5299P
This caddy runs fine until coolent temp reach above 200 degree (F), then engine chuckel and cuts off at cruising speed or sometimes turning into freeway ramp. It acts like a ignition module problem, most of the time it cranks right back and runs fine for a mil... Trouble codes: P0032, P0034, P0071, P0095
2000 Cadillac Catera 3.0L MIL Lamp on VIN: W06VR6YR06
Thanks in advance. I repaced the engine for a catastrophic engine failure. Loss of oil pressure spun rod bearing. Since the engine replacement which has only been 150 miles ago. I have this reaccuring MIL lamp for P0411. I verified the Air Injection Motor will... Trouble codes: P0411
2000 Cadillac DeVille 4.6L pedal pulsation VIN: 1G6KD54Y1Y
hello all, i need help from all the cadilac gurus. we have a light pulsation from brakes and buzing when applying from 50 down to 40 and from 60 + down to 40. this is the kicker it is not like a normal abs fade it is about 1/3 less than normal! we unplug the b...
1991 Chevrolet Corsica LT 3.1L Cuts out, Stall VIN: 1G1LT53T1M
Guys I really need help on this one: Car came in with cranking but no start condition, found that if you unplug injector #6 the engine will start, so I changed it, now it starts without problems, but if you suddenly hit the gas it dies. if you accelerate very ...
1998 Chevrolet Cavalier Z24 2.4L camshaft covers VIN: 4G1JF32T7W
Hello GM techs, I have a Z-24 cavalier with the 2.4L DOHC engine leaking oil from the 2 camshaft housing covers. Does anyone know how involved it is to replace these gaskets? Both Chilton and Alldata give around 8.0 hours to do both of them - neither one gives...
1999 Chevrolet Tahoe LS 5.7L Misfire VIN: 1GNEC13R7X
cyl 2 is still missing . when you start cold it runs fine after a few min it starts if you kill it and wate a few some timek it runs fine all day till next cycle .i did see fuel teims st 1 128 lt 1 128 st 2 130 and when missing lt 2 142 to 153 %st 1 0 lt 1 3 s... Trouble codes: 302 (cyl 2 miss fire)
2001 Chevrolet Silverado 2500 HD 6.0L MIL Lamp on VIN: 1GHK24UX1E
Hello, this truck is showing a misfire for cyl # 1 and 6 while my scanner is connected and it seems to run and drive perfect. p0300,301 and 306 keeps coming up . I checked tsb's and found injector problems to be common, some alarm systems causing problems, and... Trouble codes: P0300, P0301, P0306
2002 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 1GNFK16ZX2
This truck is running great but has a code 0179 (fuel composition sensor circuit high imput). I was wondering if any one knows if the timing changes on the gm flex fuel engine when the sensor reads regular gasoline verses e-85 gasoline. I have read some archiv... Trouble codes: 0179 (Fuel conposition sensor circuit high input)
2004 Chevrolet Tahoe LS 5.3L Hesitation, Cuts out, MIL Lamp on, Won't exceed 1500RPM VIN: 1GNEK13Z64
I have directly and indirectly (with MT2500 and EASE) monitored all APP signals. After the P1125 code was cleared everything is normal again and there is no sign of a fault. I have checked TSB's and SSM's and have found nothing directly related to this DTC or ... Trouble codes: P1125 (Accelerator Pedal Position APP System Fault)
1994 GMC K1500 Sierra SL 5.7L No Start VIN: 2GETK19K5R
this vech. was towed into our shop w/no start when cold,we found knock sensor wire hooked to r side of stater,so we replaced knock sensor w/new one and repaired and hooked up wire correctly. checked all of previous repairs,and we still have the same no start ...
1995 GMC Jimmy SL 4.3L Safety VIN: 1GKCT18WXS
I have this Jimmy that needs a turn signal switch, I have never done one of these. Alldata procedure does bnot say anything about removing the steering wheel. Can any shed some light on this ?
1998 GMC Safari SLE 4.3L engine VIN: 1GKEL19WXW
Customer called and had van towed in for a no start condition. We found the one way roller clutch in bendix was broken. Replaced the starter and cranked the engine. The engine now cranks but will not run. Checked time and it seemed to be off so we assumed timi...
1998 GMC Safari SL 4.3L Hesitation, Surge, Cuts out, Misfire VIN: 1GDDM19W7W
2001 GMC Jimmy SLE 4.3L Poor Idle Quality, Stall, MIL Lamp on VIN: 1GKDT13WX2
thi jimmy came in with a stall problem got a code p0507b low idle so i change the iac and srubed the throttle body out it was very dirty, but it still run the same so i tryed to get the pcm reflashed but another shop already had done it. so found when i have m... Trouble codes: P507
2003 GMC Sierra 1500 SLE 4.8L Brake lights VIN: 1GTEK19V53
Replaced brake switch located on brake lever brake lights remain on. disconnect switch brake lights still remain on. ???
1991 Saturn SL1 1.9L Poor Idle Quality, Stall VIN: 1G8ZG5490M
In open loop car will die at idle. In closed loop it will idle but it's rough. The car hesitates real bad after it's in closed loop. Have to keep the RPM over 2000 to drive while it's in open loop. It idle fine with propane. There are no external vacuum leaks....
2002 Saturn Vue 3.0L Poor Idle Quality, MIL Lamp on VIN: 5GZCZ63B02
Hello all, this is my first post so bear with me. I have this 02 Saturn vue 3.0L. The complaint is MIL is on and sometimes the idle is high. Has three codes of which I can only find descriptions/troubleshooting for one, the high idle code. I have found a recal... Trouble codes: U31BB (Unknown), P507, B3901 (unknown)

Fixes & Summaries for GM
Fix/Summary Answers
1993 Buick Park Avenue Ultra 3.8L power steering VIN: 1G4CU5319P
First off thanks to all who replied to thsi post. We have fixed the concern. Some of you suggested the drive belt slipping. Was not the case tension is ok. I replaced the hose from the resivouir to the ps pump, the return hose, and the pressure line which incl...
2004 Cadillac Escalade EXT 6.0L Hesitation VIN: 3GYFK6F6N9
Thans to Robert from Georgia;It was carbon ring in throttle bore cause throttle plate to stick. I cleaned the throttle plate & bore.
1988 Chevrolet Corvette 35th Anniversary Edition 5.7L Hesitation, Surge VIN: 1G1YY2183J
Thanks for all the replies. I apologize about the delay in closing this request. I found the computer to be causing my problems. after It was replaced engine ran fine but would light code 36 everytime I started it.I replaced maf relays as many of you sugges... Trouble codes: 33 (mas air flow readings high).
1990 Chevrolet K1500 Cheyenne 5.7L idler arm VIN: 1GCDK14K1L
Well we finally figured it out and Daniel [...] hit it on the head, ride height, someone had tightened the torsion bars to lift the front of the truck to #1 fit the larger tires & rims and #2 to set the ride height even front to back. Well they had lifted the ...
1992 Chevrolet Lumina 3.1L No Start VIN: 2G1WL54T7N
Thans again; It was the terminals connectors on the one end of the ign module. I found the female terminals in the harness loose/no connection.
1997 Chevrolet Blazer 4.3L Hesitation, no power VIN: 1GNDT13W5V
thanks for all the help. after reviewing all the info i went back to check back presure again. what i found was this, i first checked it at the left front o2 sensor & got over 10 psi,then dropped the convertor and found no change in the way it ran. so after re... Trouble codes: P0300.
1999 Chevrolet Tahoe LS 5.7L Knock Sensor Code VIN: 1GNEC13RXX
Hi All A special thanks to the 4 that replied It was greatly APPRECIATED...The fix was a new knock sensor module,(It's located in the PCM under a small cover...Looks simular to a PROM from a older Delco PCM) After two weeks of debate with the A/C delco rep it... Trouble codes: P0325 (Knock Sensor Mudule Circuit).
2001 Chevrolet Malibu 3.1L alternator VIN: 1G1ND52J21
I found a partially broken wire leading to the alternator which shorted out the new alternator. Repaired wire and installed new alternator. Everything is fine. Thanks for all the help
2003 Chevrolet Suburban 1500 LS 5.3L No Start VIN: 3GNFK16T63
I found that I had made a mistake when first checking this vehicle. The no crank issue was do to the PCM B fuse in the underhood fuse block. Changing the fuse allowed the vehicle to crank and run. The problem is the fuse never blew again. This is a work vehicl...
2003 Chevrolet Silverado 3500 6.6L Hard Starting VIN: 1GBJK34153
Thanks for the help on this one. Replies suggested that the injector flow test was a dealer test, and to look for steel lines rubbed, etc. I replace all the rubber and o-rings on the supply side of the fuel system and ensured that the tank vent was open. W...
2005 Chevrolet Express 1500 LS 4.3L Hesitation, Surge, MIL Lamp on VIN: 1GCFG15X85
thanks to all that responded. the problem came out to be the pcm. i checked the wiring from mass air flow to pcm and everything was good. i even add extra ground to black with white stripe to the wiring. thanks again to every body that responded. Trouble codes: P0102.
1998 Oldsmobile Intrigue 3.8L engine VIN: 1GM24WC45H
well thanks to everyone that replied it was the upper plenum that was leaking it completely flooded the upper engine and hydrolocked. i replaced the upper plenum and plugs and the car ran great.
2003 Saturn Vue 2.2L transmission VIN: 5GZCZ43D53
This car is reported to be fixed. I have my doubts though. after checking back pressure, fuel pressure, vac, timing, and other related componants I could find only the transmission specs out of test perameters listed. I could drive the car and it would basicly...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next