I'm new to the forum, but have been working on Cobalts, ION's, HHR's and L Series for years. Done a few Cavaliers and Sunfires too. This week I replaced three timing chains sets on 05 Cobalt, 06 Cobalt and 01 L200. All L61 2.2l, all under 136k. Every one of them had broken guides, the L200 even...