GMC Sierra 1500 Questions Car Customization
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This is the fourth time this transmission has been out of this truck I don't want to put it back in again. I'm looking for an upgrade. I would prefer something with more years. In 94 the speed limit...
So, I've been searching the Internet for a chip to help my 99 Sierra get better gas mileage and haven't really found anything other than chips that are obviously a scam or crap from eBay. My quest...
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