1999 GMC Savana Van Owner's Manual - Page 12
1999 GMC Savana Van Manual
Page 12 highlights
yellowblue 2. Lift the carpet/mat flap at the inboard side of the seat base in the rear. 3. Locate the red handle on the inboard side of the seat base and rotate it up. 4. Once the red handle is rotated up, pull the handle to remove the locking pin. 1-6