Hello, I am a new owner of two GM products, I was given a 1999 Silverado Z71 with 260,000 miles needs a lot of work,.. I just purchased a 1999 Cadillac Escalade with only 85,000 miles with all maintenace records and in like new conditions. I Have been looking for years for this truck. I replaced the wheel bearings,tranfer case switch, rear brakes, oil, all filters and lubed the silverado. I am going to have the transmission serviced soon. It shifts fine there is a clunk in the rear end. I live in the Panhandle of Florida and use the trucks to pull a small aluminum boat and a medium sized fiberglass boat.. Looking forward to reading the post and sharing others stories..