it has a double-roller timing chain.
A timing CHAIN
chain
It has a timing chain. All V-8 Gm products have them.
chain
the 4.3 has a chain, luckily gm was smart enough not to put a belt in them.
Definitely a timing chain, I checked the parts page on GM
GM's 4.3 liter Over Head Valve , V6 engine has a timing CHAIN
A GM 3.4 litre V6 engine has a timing CHAIN
The GM 3.8 litre V6 engine has a timing CHAIN
The GM 3.4 litre V6 engine has a timing CHAIN
does a v6 gmc onvoye have timming belt or chain
The 4.3L V6 GM engine does not have a timing belt it has a chain, and it does not directly drive the distributor.