Hello, Im new to this forum and joined to try a resolve a issue with my 08 silverado 5.3 crew cab 17k. I recently noticed it making a ticking or knocking noise on cold starts and would go away upon reaching temp. I took to shop and was told of noise in #5 piston and are taking it apart. Has any one else had this issue. If so what was the outcome. Wrnty covering it but I'm sure they will do a cheap fix. ANY ONE HAD DIFFERENT OUTCOME.