alcadiente said:
Has anyone heard of or have installed a larger tranny cooler on their Armada. The Big Tow package has a tiny one in front of the radiator but the tranny still gets hot going up even small hills towing my 8200lb trailer. Also how about an oil cooler Stillen has one for about $500 bucks and Stillen says it will mess with your cruise control.
That doesn't make sense....at all. I've climbed steep grades that took 10 minutes to climb and never had an issue with my 3000 lb trailer doing 65 mph, running in third gear the whole time.
So somethings going on:
1. Somethings wrong with your truck, might want to have it checked-out.
2. You tranny is not really hot. It's not over-heating until it reaches the dash mark on the gauge.
3. Your running to high of RPM. In the example I gave you I was running 3600 RPM. I can do that cause I'm only pulling 3000 lbs. You however, cannot. In pulling a steep incline you would need to drop to around 50 mph. Likewise, with small inclines you cannot be run 70 mph like we all have the tendancy to want to do, so we can run with traffic, but you cannot when pulling 8000 lbs. If you don't know what RPM you were running, and approximate grade of the hill....then item #3 is your problem.