I think I fried my Buggy

[jkg2003]

1997 EzGo, 1 yr old interstate batteries, 4 inch lift...We use the buggy as a deer lease transportation, and it will sometimes overheat and shut down for a couple minutes and then resume as nothing had happend...this time when she overheated I took the seat off just to take a look at what was going on and I saw smoke coming from the cover on the passenger side. The buggy continued on like always, but not she wont move, the soleniod clicks but she wont move...Please help me get her back on the road and maybe suggest upgrades to keep her from overheating???