Both, timing belt from cam to diesel pump. Timing chain from cam to crankshaft.
chain
It has a Timing Belt.
The 2.5 liter has a timing BELT
Five hundred dollars.
I would suspect you need a new timing chain or belt depending on which is installed. A worn belt or chain will jump time.
it has a timing chain NEUTZ
If the truck is equipped with a V6 it will most likely have a timing belt. However if it has the 4 cylinder it will have a timing chain.
It has a timing chain.
ChainChain
Yes, it has a chain
Definitely a timing chain, I checked the parts page on GM
timing belt is stupidchain is stronger