RE: Rustproofing/ Undercoating
True but I have seen some newer Chevys and GMCs with alot of frame and chassis surface rust. Having a little more protection is a must if you live near the ocean or somewhere where it snows and they use road salt. I touched my frame up ( it had already been undercoated ) but the road salt still killed my cab corners. Im pissed, the damn thing was perfect and now the cab corners are blistering up.
99' Silverado 5.3 4X4
Modified Predator 93 tune: TQM @ 40%, injector slope bumped up 4 levels,
125 MPH top speed, 5500 RPM limit,
TBS, 180 thermostat, 4" CAI with 9x6" element,
Bypass and De screen performed,
AVG: 16 MPG City, 20 MPG Highway