I'll bet there is a relay involved. It probably welded itself shut. Check the unit in the rear of for an electrical relay and unplug it, see if the blower shuts off, if it does, this is your problem.
The 2005 Chevrolet Suburban has a V8 engine.
The 2005 Chevrolet Suburban has 16 valves.
The 2005 Chevrolet Suburban has overhead valves (OHV).
The 2005 Chevrolet Suburban has a 4-speed automatic.
The Suburban Times was created in 2005.
The curb weight of the 2005 Chevrolet Suburban is 5268 lbs..
The 2005 Chevrolet Suburban is 18 ft. 3.3 in. (219.3 in.) long.
The 2005 Chevrolet Suburban has a 25 degrees angle of approach.
The 2005 Chevrolet Suburban's turning circle is 43.0 ft..
The height of the 2005 Chevrolet Suburban is 6 ft. 1.6 in. (73.6 in.).
The maximum payload of the 2005 Chevrolet Suburban is 1732 lbs..
The 2005 Chevrolet Suburban has a 22 degrees angle of departure.