Motor problem

G

G-203044

I have a 07 Colorado that's good and sounds good. When I drive it, the motor starts ticking and gradually gets worst until it wants to stall. I replaced camshaft and crankshaft sensors with no luck. Any ideas what the problem is.
 

zora

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Do you have a check engine light on and if so what are the codes?
Where on the engine is the ticking coming from?
 
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