What could cause Knock sensor code p0326 and code P0017 on 2006 Chevy HHR?

What is your question?

2006 Chevy HHR with 123,090 miles on it. The check engine light would go on and off for a couple of weeks so we had it checked and only the knock sensor code came up.p0326 so we changed the knock sensor cleared the code. the check engine light stayed off for a couple of days and then returned for good. Then the traction control light starting coming on every once in awhile. When it's on it shifts into gear in a jerking way. Then 1 day it dies At red light and took a few times trying for it to turn back on. Now code p0014 and it has a very rough idle and a ticking noise when the engine is revved up. Cleaned out the metal shavings in the camshaft actuator exhaust and intake solenoid and did oil change but no metal in the oil or filter. After cleaned code p0014 gone..2 days later code P0017 and still p0326. we're thinking about changing the tensioner on the timing chain...so my question is that where you would go next as far as based on the codes and noises is still making?

What makes this problem better or worse?

Its worse at cooks start and driving for more then 20 minutes

How long has your 2006 Chevrolet HHR had this problem?

A few weeks