I also have a set of Callaway irons. I wanted a set of mizuno forged irons, but they cost 2 mortgage payments. I agree with what is posted above. Go...
Real performance upgrades aren't cheap. Like stated before, "high flow" systems really aren't worth it. Same thing with cold air intakes and tb/carb...
get under the truck and try to wiggle it in every direction. if theres any play, change it. usually can hear a clunk when going reverse to drive and...
id toss a pressure tester on there before putting a new pump in lol. has your check engine light come on? if your truck is running rough, it could be...
the fan setting sounds like a bad blower motor resistor. The other issues could be caused by a bad bcm. The 99-00 yukon denali were one of the first...