Door Chatters or Will Not Glide Smoothly. GMC Truck Safari

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 Safari - 4WD 🢒 Body and Accessories 🢒 Doors 🢒 Door Chatters or Will Not Glide Smoothly

Problem	Action
The upper roller is out of adjustment.	Reform the upper roller bracket in order to eliminate vertical loading on the roller.
The upper roller bearing fails.	Replace the upper roller bracket.
Dirt is in the track.	Clean and lubricate the track.