Run a compression test. If compression in all cylinders is low, it's probably the timing chain.
I am 99% positive that your Malibu does not have a cam belt, but instead has a cam chain. Look in your owner's manual or call your local Chevy dealer to be 100% sure.
The 2003 2.5 CRD Jeep Cherokee has a cam belt not a chain
Timing is done by chain with an automatic chain tensioner. The accessory drive is a belt located on the front of the engine.
You don't mention the year or engine size but the 5.0 liter V8 has ( 1 ) timing CHAIN , the 4.0 liter SOHC - V6 has (3) timing CHAINS and the 4.6 liter V8 uses a timing CHAIN (s)
roller
Timing Chain
The 2005 Chevy Malibu has a timing chain, not a timing belt.
marks timing chain 99 Malibu 2.4
chain
2.2 has a chain
Wath timing 2.2 malibu 2004
The 2.4 litre four cylinder engine in a 1998 Chevrolet Malibu has a timing CHAIN
None. It does not have a timing belt. It has a timing chain.
It does not have a timing belt, it has a chain.
It has no Timing Belt, it has a Timing Chain.
Pushrod engines have a chain. Overhead cam engines have a belt.
It has a chain that should last the life of the engine.