Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Important:

The nuts that retain the rear passenger seat floor rail on the left hand side of the vehicle can be accessed from underneath the vehicle.
The right hand side rear passenger seat floor rails are similar, but require that the heat shields be removed for access to the floor rail nuts.
The 12 passenger extended van and the 15 passenger van reinforcements are used along with the rear seat floor rails. The reinforcements are installed on the underside of the vehicle to the floor rail studs, and held in place by the floor rail retaining nuts. If you remove the reinforcements, reinstall the reinforcements.

Remove the rear passenger seats from the vehicle. Refer to Seat Replacement - Rear Bench .
Raise the vehicle and support the vehicle with safety stands. Refer to LIFTING AND JACKING THE VEHICLE .
Remove the spare tire from the vehicle.
Remove the heat shields from the vehicle. Refer to EXHAUST HEAT SHIELD REPLACEMENT - FRAME .
Remove the nuts (3) that retain the floor rail to the floor of the vehicle.

Fig 1: Removing Floor Rail To Floor Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the rear seat track reinforcements from the seat track studs (12 and 15 Passenger).
Lower the vehicle.

Fig 2: Removing Rear Seat Track Reinforcements
Courtesy of GENERAL MOTORS CORP.
Remove the rear floor mat/carpet. Refer to MAT/CARPET REPLACEMENT - REAR FLOOR (PASSENGER MODELS) or MAT/CARPET REPLACEMENT - REAR FLOOR (CARGO MODELS) .

Fig 3: Removing Floor Rail Nuts
Courtesy of GENERAL MOTORS CORP.
Remove the floor rail (1, 2) from the vehicle.

Fig 4: Removing Floor Rail From Vehicle
Courtesy of GENERAL MOTORS CORP.