Loosing power up hills

Downshift apply acceleration

 

What are you running for power? Cat,Cummings ect? Did the shop dyno it after repairs?

 

Get a bigger engine! Nah just kidding i'd take it straight back to the repairer also check fuel filter and air cleaner if their full they can restrict engine pickup.

 

with a truck that old could be anything ata fuel lines and such

 

Those old T2000s should run well if everything is good and you have at least 500 actual horsepower and above. Along with a good decent torque rating etc. I like em. In my day they were brand new and dominated the highway until others with more power gets to run the front door.

Take it back to the dealer and say it's not running well. There is no reason you should not be able to run Townhill upgrade near Breezewood at a minimum of 40 mph loaded.

 

I agree with the fuel filter and air cleaner you need to check it. I had an incident that I was losing power then I replace my fuel filter