Plug Wires, and Cracked Rear Shock Covers
I have an '08 Cobalt XFE and an '09 LT, both sedans.
The '08 has 101K miles. Starts and idles smoothly, but I'm thinking of replacing spark plugs at the dealer since the owner's manual says 100K. Is it an absolute must to replace wires at the same time? I'm sure the dealer will suggest that.
Also, had an oil change at the dealer on the '09, which has 75K miles. I was told the rear shock covers were cracked, although the Service Writer said he didn't know if that would really be a safety issue. I passed. Opinions? Thanks!