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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 4, 2008
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Open Help Requests for GM
Help Request Answers
1997 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP52K9V
located a fuse in the passenger side relay center #5 20 amp fuse that was blown. using our tech 2 we tried to control the egr,vent.purge,ac clutch relay and after fuse replacement all componants operated and we monitored the o2 senser heater for the #1 sensor ... Trouble codes: P1406 (egr position sensor performance), P1675 (vent solenoid control circuit), P0135 (bank 1 sensor 1 heater performance), P1655 (purge solenoid control circuit), P1654 (ac clutch relay control circuit)
2004 Cadillac SRX 3.6L Drive-axles VIN: 1GYEE63774
Ratcheting noise on hard acceleration, seams to be coming from transfer case.
1998 Chevrolet K1500 Cheyenne 5.7L No Start, Stall, Misfire, MIL Lamp on VIN: 1GCEK19R5W
okay, got one here thats making me a little lost. its a 1998 k1500 that only acts up when it feels like it. When it runs, it runs like a new truck but right now its acting like its jumped time. When you turn the truck over it pops and backfires just like the t... Trouble codes: P0300
1999 Chevrolet Silverado 2500 6.0L Mechanical VIN: 1GCGK29U8X
What happens to customer at times when he brakes the brake pedal gets spongey and the p/s steers hard. does have hydro boost the belt and tensioner are fine. Says no lights come on and does not here the antilock sys as if it had bad sensors on the front. We ha...
2000 Chevrolet Silverado 1500 4.3L evap monitor not run VIN: 1GCEC14W7Y
Codes have been cleared after repairs were performed. All monitors have been run except evap monitor. Does anyone know of a better way to get the evap monitor to run other than the 12 minute test drive cycle which requires 15 miles of no traffic & no stops in ...
2001 Chevrolet Silverado 2500 6.0L No Start VIN: 1GCHC29U21
Hey y'all. First of all, I've checked the archives, but there wasn't anything that matched everything I've run across on this truck. This was towed in with a "no start" condition. The first thing I noticed was no CEL. I pulled the ECM B fuse & it was blown. ...
2002 Chevrolet Avalanche 1500 5.3L rear diff VIN: 3GNEK13T22
while driving from speeds 20mph and up getting a humming noise wich seems to be coming from rear driveshaft/diff area more noticable when applying throttle makes no differance on turns just gets louder the faster you go. I saw a tsb on revised driveshaft repla...
2004 Chevrolet Suburban 1500 LT 5.3L No Start VIN: 3GNFK16T94
have a wierd one here hoping for some insight or help got this suburban that we at the shop have not had the chance to see the actual problem occur but the customer states that after every fill up of fuel the vehcile has to be cranked 3- 5 times to get the veh...
1998 Oldsmobile Intrigue 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3WH52K3W
Vehicle is setting lean codes currently. Replaced reman maf again and havent reset maf code again. Vehicle will upon start up will miss a few times on all cylinders intill vehicle goes into clode loop. Fuel trims are 20+ shrt and 16+ lgterm I have smoke tested... Trouble codes: P0102, P0171
1999 Oldsmobile Alero GL 2.4L No Start VIN: 1GJMC12365
i was just wondering if the was a way to by pass or override pk3 systeams
2000 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Cuts out, Stall, Misfire, Poor Fuel Economy VIN: 1G2WP52K1Y
car starts only with pedal all way down take foot off of gas stall out. car has no vacuum now. did a propane test no leaks found.
2000 Saturn LS2 3.0L No Start, Poor Idle Quality, MIL Lamp on VIN: 1G8JW52RXY
vehicle was brought in for an intermitant no start/ hard start issue. customer states that the vehicle will crank but not start. after several minutes of cranking vehicle will finally start, sometimes will idle very rough until driven, and the mil light will i... Trouble codes: P0727, P0335, B (crank sensor-no engine speed detected), P1780 (trans code- unkown- seems to be related to not signal to or from ecm)
2006 Saturn Ion-2 2.2L No Start VIN: 1G8AJ55F56
when vehicle is cold, and tried to start, vehicle will not start and the security indicator is on. customer walks away from vehicle for 5-10 minutes and comes back and then the vehicle will start just fine.

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet Corsica LT 3.1L stays runnin VIN: 1G1LT53TXP
As so many suggested ,it is the ignition rack and gear assembly. WE are repacing it today, the teeth are worn and not always fully engaging after the car is shut off. Thanks to all 16 shops who replied Bill
1999 Chevrolet Silverado 1500 5.3L 2-3 and 3-4
Well folks thanks again for all the help! Jerry from Virginia saves the day! I checked the (#7) 3rd Accumulator Retainer and Ball Assembly behind the 2-4 servo and sure enough it was not seating! I replaced it and all is well! I quess for $6.13 this little g...
2002 Chevrolet Avalanche 1500 5.3L fuel pressure VIN: 3GNEK13T92
well thank you to all that replied, sounds like I might be after the fuel pump for my noise .The customer chose to live with the noise for now, but if he desides to do it in the future and the noise goes away. I will post a update to those that helped me Thank...
2004 GMC Envoy XL SLE 4.2L Poor Idle Quality
Replaced the throttle body after going thru the Mitchell trouble shooting chart. no change at all. After thinking about it for a couple of days I decided it had to be a bad PCM. called dealer to order & they informed me it was coverd under warranty, so they re...
1995 Oldsmobile 98 Regency Elite 3.8L No Start VIN: 1G3CX52K5S
Thank you for all of your help. We found today by grounding the PCM GROUND at the PCM RED connector the engine would run. Tomorrow we'll either try to locate that ground terminal or splice and ground to another location. Since I already cleaned up the ICM p...
1997 Oldsmobile Achieva S 2.4L No Start VIN: 1G3NL52T0V
Thanks for the replies. As we suspected the instrument cluster was the problem. We have replaced several of these but this was our first defective unit. Just because it is a dealer item doesnt mean it is exempt from being built poorly, especially since it is r...
2003 Saturn Vue 3.0L Hesitation, MIL Lamp on, Power loss VIN: 5GZCZ63B83
Good replies from Dave, Joseph and Tom all pointing to the Saturn TSB which involves updating the routing of the PCV hoses, drilling a hole in the upper plenum cover for a grommet. The drill size of 11 mm translates to a 7/16" and that grommet WILL go in ther... Trouble codes: P0638 (Throttle command performance), P0700 (Mil request by TCM), P1780 (Transmission PNP switch/Mil request by TCM).
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