Service Engine Light
July 19th, 2005, 6:32 PM
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Service Engine Light
<FONT size=2>I own a 1999 Tahoe. When I pull my 14' trailer or drive in excess of 80 mph for 100 miles or more the light comes on and stays on for a couple of days then go off. Does anybody have any suggestions on what could be causing this ?? It has happened about threeor four times.</FONT></P>
<FONT size=2> Thanks,</FONT></P>
Dondobe</P>
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August 30th, 2005, 3:07 PM
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Service Engine Light
The problem that was causing my Service engine light to come on under these conditions was my cap & rotor. There was a lot of build up on the terminals, making it misfire under a load and higher speeds. </P>
Dondobe <IMG src=smileys/smiley1.gif border="0"></P>
January 28th, 2006, 7:32 PM
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RE: Service Engine Light
I have had the same problem with my 99 Tahoe when I tow my 5x10 trailer loaded down. The light usually comes on when I am going up a hill and the truck shifts out of overdrive to take the hill. I had it scanned and the only thing that it showed was a misfire code. I was told to drive in 3rd instead of OD when towing. Wish I could be more help.
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