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2001 I just got from dealer, auto btw, test drove it drove fine they had a new lift pump installed that day, well I made it home and the next day I took it to work , well it sits at the yard till I get off so I get there and I go to ride a round and take my buddy home, well leaving DAIRY QUEEN, to go to CHEVRON to get some fuel since gauge doesn't work , DEALER sent new one btw will get tomorrow aswell as a TIMBOS tps but I paid next day and kinda got screwed if you order wrong, anyway, going from dq to chevron the truck dies as I am turning to a pump, ok drop in N then stop then P then try to start it fires up, ok well I add 25$ , eventually filling tank up later, but as I leave and I'm going about 3 /4 of a mile away from gas station it does it again, JUST DIES!, well not sure the codes at that time it was throwing , ive done several things, as take back the lift pump just installed and get new one, seeing it wont come on at times but Ive read on why, and when I uninstalled chip It through some VP CODES that mean death but I rehooked and reset and they all went away and it still has the start and sometimes if you do apps reset you get 30 minutes but if truck has been ran you may make to DRIVE out of REVERSE, and JUST DIE!, ok well I said **** it may be TPS Or VP who knows I'm a 12 VALVER, well I tested TPS ITS GETTING .337 at idle into #3 pin, and it goes up and down smoothly!, well after testing TPS/ APPS the truck would run good and stuff but then eventually just shutoff, and actually now it sometimes just surges and then lets it idle and it runes fine then will die or surge no idea I try not to drive it! but before it would JUST DIE, and I'm not sure if the ASD Has anything but sometimes if P0122 comes up and I crank 1388 ASD code comes, up! idk PLEASE Help should I just buy a VP I have the TIMBOS coming tomorrow, but as of today I took TPS off , looks kinda new or been tampered it broke loose easily and wasn't very dirty! well now it surges a lot more in 2nd , BUT not original issue, Original issue is the truck just DIED didn't idle , so not TPS ? and Now it just surges sometimes, PLEASE HELP, BTW I also tested a differen plug I believe ground and pin next to it ? well it read 4.670 volts and slowly dropped ? anything there ? just don't know why truck just dies!