[tguil]

Thanks for the information and the links.

A new twist. My wife informed me that the blower is now working at all speeds, not just high.

I called my dealer's service department and explained the whole situation. The service manager that I talked to said that because it is working again, it sounds like a short in the wiring. OK, if it is a short in the wiring, why would the blower operate on high but not the other speeds? Is the high speed operation on an entirely separate wire. Does the resistor problem ever correct itself?

We'll be taking the truck out of town in a couple of days and I don't have time to get it back to the dealer. We are headed north and I for sure want the fan to be operating. If problem is the resistor which I think it is, will it continue to operate on "high" indefinitely or at least until I can get the truck in to have it checked out.

Thanks for any suggestions.

Tom