Removal Procedure

Remove the dome lamp. Refer to DOME LAMP REPLACEMENT (PICKUP) or DOME LAMP REPLACEMENT (UTILITY) in EXTERIOR LIGHTS article.
Remove the coat hooks. Refer to COAT HOOK REPLACEMENT (EXTENDED/CREW CAB PICKUP) , COAT HOOK REPLACEMENT (STANDARD CAB PICKUP) or COAT HOOK REPLACEMENT (UTILITY) .
Remove the passenger assist handle. Refer to ASSIST HANDLE REPLACEMENT .
Remove the sunshades and the retainers. Refer to SUNSHADE REPLACEMENT .
Remove the windshield garnish moldings. Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR .
Remove the side door upper latch cover, if equipped.

Fig 1: Locating Side Door Upper Latch Cover
Courtesy of GENERAL MOTORS CORP.
Remove the left and right front seat upper seat belt anchor bolts.

Fig 2: Locating Upper Seat Belt Anchor Bolts
Courtesy of GENERAL MOTORS CORP.
Pull the body side trim panels loose at the roof line.
Place the seats in the full rearward and reclined position.
Remove the floor mounted gearshift lever, if equipped. Refer to CONTROL LEVER &/OR BOOT REPLACEMENT in MANUAL TRANSMISSION - NV 1500 article.
Remove the full length floor mounted console, if equipped. Refer to CONSOLE REPLACEMENT - FRONT FLOOR - FULL LENGTH (AUTO TRANS) , CONSOLE REPLACEMENT - FRONT FLOOR (NON-FULL LENGTH) or CONSOLE REPLACEMENT - FRONT FLOOR - FULL LENGTH (MANUAL TRANS) in INSTRUMENT PANEL, GAGES & CONSOLE article.
Use the following steps in order to remove the headliner from the vehicle:
1. 12.1
  
  Grasp the headliner at the front.
2. 12.2
  
  Use a downward motion in order to disengage the hook and the loop fasteners at the rear.
3. 12.3
  
  Slide the headliner foreword, past the body side trim panels, rotate it 90 degrees and remove the headliner from the vehicle.
Fig 3: Identifying Headliner Components
Courtesy of GENERAL MOTORS CORP.