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The Pontiac Aztek has a chain which will last the life of the engine and should never need replacing until the engine is overhauled.
It has a timing chain.
Timing chain
The 2008 Pontiac G6 has a timing chain that normally requires no maintenance.
It has a timing chain.
TIMING CHAIN
a timing chain
The ( 3.4 liter V6 ) in a 2004 Pontiac Grand Am has a timing CHAIN
chain
chain
if its a chain^
Chain