Join Date: Aug 2007
Location: Phoenix, AZ
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I had the exact same thing happen to my truck last month. Every time I put the truck in reverse, the fuse would blow, and my reverse lights wouldn't work, vacuum pump and 4wd actuator wouldn't work. That fuse controls the vacuum pump, which actuates the AC and 4 wd, reverse lights ect. Trouble shoot the electrical for everything connected to this fuse, turned out to be the auto tranny position sensor. Everything has been working great since.
Hope that helps.
Truck: 2001 F350 | 7.3L PSD | 4R100 | Crew Cab | Short Bed | 4x4 - 234,000 miles
Mods: PHP HYDRA | Isspro EV2 Quad Pilar Gauges | Swamps High Voltage High Frequency IDM | Air Raid Intake System | 4" Straight Pipe Exhaust | BFGoodrich KO2 33" Tires on Stock Polished Wheels
Usage: Tow Pig
Tow Toy: 98 Fully Built Toyota Rock Crawler & 1996 Skeeter Bass Boat