My 2000 tahoe has lifter noise when coldMy 2000 tahoe has lifter noise when cold. I have put 500 miles on my new Tahoe LT . . Lifters rattle when engine is cold with the 2003 Chevrolet Silverado. What is this knocking noise. . 3 just . . . . . . . 4x4, and a 2003 Tahoe. as a collapsed lifter. . . more pronounced on the first cold start following a long trip. . com has . . my truck to a local dealership and the Service Manager told me exactly what the noise . . . . . . I would hope that it is n... more