My neighbor's 2003 LT cooling fans won't come on. We tore into it with gusto. Here's what I found so far: Disconnecting the water temp sensor results in the little buggers spinning merrily away until, of course, I plug it back in, whereby they cease, causing the coolant reservoir to urinate on my hand. Coolant is full at both radiator and reservoir (to max). Massaged hoses until I became rather excited myself. A bit unsure about cap, but wondering now if the sensor might be bad. Any help with my homework will result in appropriate genuflection to the LT gods.