In warm weather the truck bucks and stutters at cruising speed like fuel cut. Only during warm or hot weather fine when its cool out using the ac makes it worse so i have stayed away from that. Pulled the battery and cleaned cables and terminals fixed the problem for a little while but now that i think of it all i really did was reset the computer this weekend it was very bad changed the fuel filter and didnt seem to make much of a difference. Any help would be appriciated. Thanks joe