One problem related to tank assembly has been reported for the 1999 Chevrolet Silverado 1500. The most recently reported issues are listed below.
08-02-2011 I see Ford recalled f150 for gas tank strap failure. Gm need's to also. I have a 1999 chevy silverado. Gas tank strap rusted threw and broke 07-26-2011. Tank dropped down but not completly off.