One problem related to windshield wiper/washer linkages has been reported for the 1999 Chevrolet Tahoe. The most recently reported issues are listed below.
Frequent recurring failure of front wipers. Most recent: Nov 18, Nov 20 and Nov 23, 2004. Wiper will quit in mid-sweep. Remedy: raise hood, jiggle wiring harness plugs on gear box and/or tap on front of gear box. Remedy may work hours, days or weeks.