I have an 05 zhp with almost 130k miles. I've done most preventative maintenance that I can think of, but I'm wondering if it's time/is it worth it to replace the ccv. How can you tell that this needs replacing? It's not throwing any codes, but I have noticed sputtering in the cold. I replaced the vanos but I haven't encountered any cold weather since to make sure this fixed the issue.
If it does, is there any other maintenance that needs to be done at the same time?
Thanks in advance!