Join Date: Jan 2009
Thanked 64 Times in 60 Posts
I had that happen once, with about 18.5k in tow. The truck got really hot and I had to pull over to let it cool down. Anyways, long story short, I replaced my thermostat and not a problem yet. With a heavy load, the needle will move to just the high side of the middle line. However, I haven't tried a hill that steep with a load that heavy in that kind of heat, since that incident, so I can't say for sure. But also Like Bcummins said, clean everything up really well too.
2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.
TOTAL PERFORMANCE DIESEL 707-545-FUEL (3835)