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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 19, 2005
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1991 Buick LeSabre Limited 3.8L No Start, Stall, Stalls Then No Start VIN: 1G4HR54C0M
Hi everyone I have a wierd one here this car came in for a intermintant no start and stall condition , ran car untill it stalled and found no spark from any plug . OK replace the module (common problem ?) Wrong it still does the same thing but i have spark now...
1995 Buick Riviera 3.8L abs/traction control VIN: 1G4GD221XS
I pulled codes and found 53 and 48 in the traction control/abs system. The traction control light stays on the dash and disables the sytem. I could not find a flow chart in my shopkey for 53 [rr wheel speed sensor noise]. If i try to clear codes they both come...
2002 Cadillac Seville SLS 4.6L Traction Control/ABS VIN: 1G6KS54Y9Z
Hi, thank you in advance for your help. This Seville will intermittently illuminate first the ABS, Traction Control, and Red Brake Warning Lights, then the other two will go off and the Traction Control light will remain on. During this condition the automatic...
1956 Chevrolet 150 350CID Excessive Emissions, Poor Idle Quality VIN: 5612345789
overfueling gas in oil fouls spark plugs carbs 1st holly 750 2nd holly 600 3rd quadrajet .3 new fuel pumps new intake manifold
1988 Chevrolet Sprint 1.0L Cuts out VIN: JG1MR6150J
I have an 88 sprint that decides to shut off after it is wamed up and in gear(reverse or drive).The car starts fine and runs well up until it is warm then it will stall when it is in gear.I have checked Temp sensor,o2 sensor speed sensor.I installed a new carb...
1994 Chevrolet S10 Blazer Tahoe 4.3L abs system VIN: 1GNDT13WXR
Hi fellow techs, I've got a funny one here. ABS lights come on when going around left hand corners. I have checked all of the wiring (under dash, engine comp) etc. Also when this happens, there is no communication with the Tech 2. As soon as vehicle is straigh...
1996 Chevrolet Lumina LS 3.1L Stall VIN: 2G1WN52M3T
got a prob. cruisin at 30 mph let go of gas pedal car still pulls . iac command is around 135. tps is .61 tps percent is 0. feels like cruise control is on but it is not.think the comp. is giving a bad command. dont know if this is related but tcc never engage...
2000 Chevrolet Impala 3.4L tcc release switch VIN: 2G1WF52E7Y
About once every 500 miles this car sets dtc 0742 tcc release circut. Can't duplicate the problem. The cust customer is sure that this only happens after a long decel followed by a light tip-in. Any experience with this would be very helpful...thanks
2000 Chevrolet Tracker 2.0L No Start, Stall VIN: 2CNBE1BC7Y
Have Intermitton no spark condition.After heat up. Will stall. Sometimes 15 minutes or 40 miniutes.Will crank but will not start. Will restart after a few minutes cooling time. I can use some help. I have ideas but,have had problems justifying repairs.Primaril...
2000 Chevrolet S10 4.3L Cuts out, Stall VIN: 1GCCT19W4Y
Vehicle blows underhood 10 amp ENG-1 fuse. Tac stops working, shifts hard, sometimes enging stalls upon deaccelaration, service eng soon light comes on. Scaner says MAF and Cam sensor bad. Replaced both MAF and cam sensor, then cleared codes. Still contunies t... Trouble codes: 105 (maf), 105 (maf)
2001 Chevrolet Astro LS 4.3L rear springs VIN: 1GNEL19W21
I have an awd drive astro that my wife drives. Ride hight is fine most of the time but if we put any weight in the back it starts to sag. 3 kids and a weeks worth of food shopping will cause it to noticably sag in the rear. I have a tow hitch that will often h...
2002 Chevrolet Silverado 3500 6.6L Mechanical VIN: 1GCJK33102
Customer is from out of town and called and said that his diesel engine was about 6 quarts over full on oil. He then called back and said that the crankcase was full of fuel. He finally brought it to us but he had already drained the fuel/oil and put in new oi...
2002 Chevrolet Venture LS 3.4L compressor VIN: 1GNDX03E32
hello to all, Although in the summer months a major % of our work is a/c related repairs this chevy venture van is kind of confusing to me. Upon confirming the complaint of insufficient cooling (I can only get 61 degrees at front and rear ducts) I proceded to...
2003 Chevrolet Tahoe LT 5.3L horn honk VIN: 1GNEC13Z43
03 Tahoe unable to turn off factory horn honk. Owners manual is no help. Has a viper alarm system and alarm is set to arm with no chirps or horn. However arm alarm and horn honks, dealer says can't be turned off. Any ideas, someone said possibly through progra...
1996 GMC K2500 Sierra SL 5.7L no 2-3 shift VIN: 1GTGK29R2T
Vehicle was sold by us. After 1 week customer returned with no 2-3 upshift. Perform prelim A-trans diagnosis. On first road test found TCC code P0741/Performance Stuck off & SSB P0756/Performance Stuck off. Return to shop and perform pinpoint tests for codes -...
2000 GMC Sierra 2500 SL 6.0L sticking throttle VIN: 1GTGC24U8Y
Hi Guys,this vehicle exhibits a sticking throttle on tip in accelleration the accellerator pedal and cable are free and work good . We found that the throttle plate sticks in the bore ever so slightly to cause a non smooth motion of the pedal from an idle posi...
1998 Oldsmobile Cutlass GLS 3.1L MIL Lamp on VIN: 1G3NG52M3W
Service engine light came on for two days. Customer brought car in. A scan revealed A code p0341 in history and in freeze frame. Check engine light was not on at time of scan. I monitored the 3x and 24x sensors on the scanner and am totally confused. Here is w... Trouble codes: P0341
1983 Pontiac Firebird 5.0L Hesitation VIN: 1G2AW87S6D
this condition occurs after cruising at highway speeds for approx.1/2 to 1 hour of steady cruise. it exibits a severe lack of acceleration. before this occurs the ck. eng. light will come on. there is a code 44. i have checked fuel press and it reads 18 psi be... Trouble codes: 44 (lean)
2001 Pontiac Grand Prix SE 3.1L Electronic VIN: 1G2WK52J31
Good Day to All, Getting stumped but believe got a HVAC controller bad. Original complaint was fan for HVAC only worked on high,and daytime running lamps would cut out and blower would stop. Not able to duplicate the daytime running lamp problem but able to ...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick LeSabre Custom 3.8L 60 amp ignition fuse VIN: 1G4HP52K4W
Thanks for the responses. After discussing them with the technician and the customer we replaced the igntion switch. We were not able to duplicate the complaint on either appt. We decided on the switch because the customer stated that the fuse blew immediately...
1988 Cadillac DeVille 4.5L Brake pedal VIN: 1G6CD5156J
Thank you everyone who responded. This Caddy has a dual diapham power booster. One of the diaphams reptured and caused a half assisted brake pedal, then went into no assist what so ever. I replaced the power booster and all is fine.
1997 Cadillac DeVille d'Elegance 4.6L altenator VIN: 1G6KE52Y8V
What I found was that the altenator was pulling down the 12 volt wire down because whn I removed the two wire connector on the alt. I doubled checked the voltege and sure enough the 12 volts were present I replaced the alt. and so far okay.
1985 Chevrolet Camaro Berlinetta 5.0L Excessive Emissions, Poor Fuel Economy VIN: 1G1FP87F9F
as you could tell by the miles on this car it has had it share of the garage...everyone told me to look at the coolent temp.. and mas air flow...i had already did all that...but what i did do was remove the fuel rail and inj with the fuel lines still hooked up...
1991 Chevrolet Camaro RS 5.0L starter
ground where starter bolts to block was dirty causing bad ground.. thanks everyone
1999 Chevrolet Cavalier LS 2.4L 1-2 shift VIN: 1G1JF52T6X
Replacement of the pressure control solenoid fixed this vehicle. The 1-2 shift is now consistently smooth and the line pressure does not fluctuate wildly as before. Thanks iatn members!
1999 Chevrolet Tahoe 5.7L Misfire, MIL Lamp on VIN: 1GNEK12R4X
15 replies with lots of good advice but four of you were apparently correct on the valves sticking...internal gm bulit pip3081. Three of the four said it had to have a valve job, but one said use 'sea foam' in the gas tank. I had already tried BG which I have ... Trouble codes: 0300 (Random misfire), 0306 (6 misfire).
2001 Chevrolet Suburban 2500 8.1L Stall VIN: 3GNGK26GX1
Some of you leaned toward crank sensor and some toward ignition switch, both good possibilities. One reply suggested de-carb on the top end, but with only 30K on the engine, I don't think it would be carboned up enough to cause a stall. Because it is very inte... Trouble codes: P0706.
2001 Chevrolet Astro LS 4.3L Brake light/Hazard light VIN: 1GNDM19W21
Thank you, all for your responding. Mostly everyone said the combination or multifunction switch on these cars have problems. I believe there is a factory TSB on it but AllData does not have it. Replaced combination switch, brake light and hazard light is work...
2001 Chevrolet Express 2500 5.7L No Start, Hesitation, MIL Lamp on VIN: 1GCGG25R11
Well, after a few more hours i decided to give up, the information i received i usefull but didn't do the trick. I have no way of checking pressure on the secondary chamber. I'm trying to find someone who can check it. if there's an update on this van i'll pos... Trouble codes: P0102 (MAF circuit low).
2002 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13Z92
I'm sure I will fix this truck, but the problem isn't bad enough for the customer to want to pay yet. Ten out of twelve replies said intake leak...most had a reference to the plenum gskts. Extra thanks to Gerry for sending tsb [...] to me. There are new GM ... Trouble codes: 0171 (b1 lean), 0174 (b2 lean).
2003 Chevrolet Silverado 2500 6.0L IDC displays "SERVICE BRAKE BOOSTER" VIN: 1GCHC24U23
Thank You, iATN Members! The 'Short Story' is that our shop sublet the IPC reprogramming to an Independent Shop up-the-road, using #[...] software update to service 2003/04/05 vehicles with the 'MY' cluster. This shop is Certifed AC Delco, and so is a compa...
1994 Oldsmobile Cutlass Ciera 3.1L no shift cold VIN: 1G3AG55MXR
some said convertor drain back but this does not seem to be the issue. some said a broken sel in trans which i beleive is the case. this job is to big for this old girl so off to the bone yard it goes thanks for all replys
1994 Pontiac Grand Prix SE 3.4L No Start, Poor Idle Quality, Cuts out VIN: 1G2WJ12X2R
Hello Group, Another one bites the dust! It seems the timing belt install 1 month ago was the result of the timing cover housing being worn through from a faulty idler pulley! The car had lost all coolant and overheated, thus causing coolant to spill over on...
1995 Pontiac Grand Am SE 3.1L Mechanical VIN: 1G2NE55M6S
Hello all. I removed the intake to find what appears to be a lobe slipping on the cam shaft for cyl number 4 intake valve. The owner of the car is not going to have it fixed so I cant for sure say it is fixed. He has decided to send it to the sale and cut his ...
2002 Saturn L200 2.2L noise VIN: 1G8JU54F42
Thanks for all of your replies and your time. Nine of the ten replies said that saturn has a updated manifold gasket to fix this problem. (Part # [...] ) We replaced the intake gasket and the noise is gone. Thank you agian for the help.
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