Mine is just playing between empty and below empty, I'm gonna try what baldeagle said first then what the others said, I'll let you know what works. Let me know about your gmc! You might figure it out before me!

Stovebolter -- the Next Generation
(I'm 20)

1941 Chevy 1/2-ton pickup
"Lucy"
In the Stovebolt Gallery
More pix on Photobucket

1967 Ford Mustang - "Sally"