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Re: I need clarity with GM timing codes
Posted to Technical Discussion Forum on 4/4/2017 3 Replies

I replace plugs in all the ones I do. (ACDelco oem)

Excellent time to do the water pump while it's out and takes 15 seconds or so

Most of the ones I end up doing already have the updated valve cover Login to read more.

3 Replies Received (View Replies)