I was able to measure my friends Tahoe at lunch today. His pedal movement was only 1-1/4".
Thinking back, my pedal movement may have been slightly less than 1" but still that means I may only need to get 1/2" or so more of pedal travel to make things a lot more comfortable.
How about moving the entire pedal assembly mount up on the firewall a bit, and then cut-and-weld a little longer rod onto the gas pedal itself?

You'll get more "throw" with a longer pedal, and it won't be that hard to do...
Come to think of it: Cut the existing pedal and then put a hollow "sleeve" over the two cut pieces so that you can experiment with different lengths easily. (Just do a small tackweld on each side, or drill and tap for a set screw).
You can play around with increments of 1/4" at a time to see what "feels" right without cutting your pedals apart 20 times.

-G

You have the '03 TPS computer too right?
