Hi. 1990 Suburban 4x4 1/2 tonne: The other morning my speedometer, and cruise control stopped working. The heater blower did too, but I don't know if that's related because I've had trouble with it before. I changed out the speed sensor after doing some internet searches, but that didn't do it. I'm thinking of looking at the wiring that plugs into the speed sensor now, but was wondering if there is some fuse somewhere that controls this, that might be blown. I checked the fuses under the driver's side dash, but didn't see anything that looked suspicious ... are there other fuses under the hood or somewhere? Any help would be appreciated. Thanks. Ross.