Does the Lexus gx470 have a timing belt or chain?

The Lexus GX470 has a timing belt. This is an item that requires maintenance, and will typically need to be replaced every 60,000 to 100,000 miles. Signs that You've got a bad or failing timing belt are going to be a prominent ticking sound coming from the engine --- this is A-Classic symptom -- as well as the engine not turning over, the engine mIS Firing, or oil leaking from in front of the motor. As belt failure may cause extensive damage to the components of Your engine, it's imperative You address it if You suspect an impending failure. You'll spend about a grand to have the timing belt replaced on Your GX470, with about $400 of that being parts and the rest going to labor.