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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 16, 2005
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1997 Chevrolet Astro 4.3L slip VIN: 1GNEL19W0V
Thanks for any help at all. P1870 keeps coming back, very intermittent, I have never felt a slip. Transmission was serviced and was very clean. Recording shows code is usally set about 100Kms at 2100rpm, no other data seems to be useful. Code has been on and o...
1998 Chevrolet S10 LS 4.3L No Start VIN: 1GCCT19W5W
Fellow Tech's I need help. I've got a "98" S-10 P/U that will crank good cold but will not start. F/P replaced within last month due to low volume. New F/P has 61 p.s.i koeo with 56 p.s.i. engine running but will only draw 7.5 amps but has good waveform on sc...
1999 Chevrolet S10 2.2L Surge VIN: 1GCCS1440X
This truck idles fine and runs fine on road test for 3 miles or so. Then it will start surging as if it is running out of gas.shot a movie and when this happens the O2 sensor goes below 100mv and the short term fuel goes to -55 while the long term stays normal...
1999 Chevrolet K1500 Suburban 5.7L No Start VIN: 3GNFK16R4X
i have a no start condition that is driving me crazy. customer stated that he parked truck and came back 3days and would not start. stated that ran good up till this point with a little extened crank. i have check for spark, pulse, fuelpresure,compresion 180 a...
1992 GMC Jimmy SLE 4.3L idle flair up VIN: 1GKCS13W9N
good afternoon techs. this vehicle came in with a complait a real fast idle on start up 3000 rpm then goes to normal idle 750 in park we have a another truck just like this one in the shop it does not do this any suggestions thanks paul
1999 Oldsmobile Bravada 4.3L Cooling System VIN: 1GHDT13W16
O.K. Welcome to my nightmare. A month ago a customer brought in a vechicle with a problem with no heat. I checked the Heater hose going into the heater core was 142 degrees F. The return hose was a 100 Degrees F. I suspected the heater core was blocked. I then...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet K3500 Cheyenne 5.7L Hesitation VIN: 1GCHK34K5P
Several replies mentioned EGR problem - replaced valve with a new GM unit and that took care of the problem - thanks for the help!
1999 Chevrolet Tahoe LS 5.7L air bag VIN: 1GNEK13R2X
thanks to all who replied when we plugged in the connetor at the air bag (3 times) the pronged piece of the connector at the air bag was not plugged in correctly and made a bad connection even when you check and recheck something you can always overlook someth...
1996 GMC C3500 HD 7.4L Excessive Emissions, Poor Idle Quality VIN: 1GBKC34J9T
Thanx for all the replies. A couple replies nailed it. A faulty fuel pressure regulator along with 3 leaky injectors. I went ahead and changed all injectors and regulator now the truck idles great with no emissions. I thank all the expert help from IATN member...
1996 Oldsmobile 88 Royale 3.8L temperature VIN: 1G3HN52K8T
Hello After replacing the thermostat on this car with a factory part and still having no results we found that the vent tube on the blower motor was missing and was sucking cold air in from under the hood(we were experiencing extremely cold weather in our area...
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