Have made a couple of changes to the truck since my last update. 1st, I've changed the headlights. I don't often drive at night, but the couple of times I did, the lighting wasn't too impressive to these tired eyes. So, I changed the std. bulbs to a reflector type. The housings are from VisionX. They're glass and DOT approved. The replaceable bulbs are 9003 type bulbs. They should brighten up the countryside a little better, without going to laser beam HID's or LED's. 2nd, I've changed the radiator cooling fan control from PWM to PCM control. The PWM controller (from Autocool Guy) worked as designed, but caused the brushless fan motors to loudly buzz, even with the supposed fix (an additional component from the same Autocool Guy). The controller worked as designed, but the buzzing was annoying. even in the cab. When the wife asked what "That Noise" was, I knew it was time to make a change. So, with GM schematics in hand, and enough relays in my parts stash, I mimic'd what the engineers had created for the later model trucks with electric fans. I had to add 2 wires to the PCM for fan control. The PCM had been programmed to turn on the fans by the tuner when he had set the PCM for me, and it uses the factory temp, settings ( the '02 truck PCM that I have originally didn't have fan control as those early year trucks used mechanical fans). I let the truck idle while I pulled off the grill to change headlight buckets, adjusting screws and bulbs. During that time, the PCM had turned on the fans (both at low speed) and I never even heard them. It never got hot enough to turn the fans on high. So far, I'm very pleased with the results.