So my sister purchased this Tahoe back in 2001 brand new... Got 13 faithful years out of it, when last week something finally failed... Her son was driving it and in his own words, this is what happened... I know it's pretty vague, but I figured I would add it to the thread seeing it's the only small amount of info I know. Sorry in advance, the description lacks any detail (he's only 17). "So the engine was just making this crazy loud noise whenever I put my foot down on the pedal. So i pulled over and let it sit for a couple mins. Then I started it and put it into drive and when I put my foot on the pedal the speedometer shot up all the way and the engine made a wicked loud noise and then I just didn't bother starting it again." Otherwise, I am basically looking to see what simple tests I can do, to see what is salvageable. All though I know it's possible, the chances of the motor and trans/drive train components failing both at once are pretty slim. The truck was towed to my house, I attempted to start it and got nothing. All the dash lights came on, battery reads close to 13V. I turn the key and I get nothing at all. Anyone have a suggestion on where to begin? Don't know if this is coincidence that the truck won't start anymore or if something major failed/motor seized. I plan to at least start with checking fuses and relays. Does anyone know the location/number for any starter related fuses or relays? Thanks in advance. My sister was going to just let the tow company keep the truck, as they were basically just waiting for it to die to buy a new vehicle. When I heard this I said I would take it, so it cost me $100 to pay for the tow.