There's NO WAY the timing chain and gears are bad in a 2003 model truck. I don't know what kind of problem that you are having, But I rest asure you it's not the chain and gears. Need more info about your problem.
when do you change timing chain on 2003 Toyota 4-runner?
It has a timing chain
it has a timing chain no need to change it
A 2003 Impala does not have a timing belt. It has a chain.
Never as it does not have a timing belt, it has a chain.Never as it does not have a timing belt, it has a chain.
timing chain timing chain
timing chain timing chain
The 3.8 liter V6 engine has a timing CHAIN
When the engine needs an overhaul. The chain will last the life of the engine.
First of all, It has a timing chain not a timing belt. No need to change the timing chain and gears. They will last the life of the engine.
Never. It does not have a belt. It has a chain.
Every 10,000 miles