General Motors Corp. is replacing its zero-percent interest loan with an offer of $2,002 in customer cash on the retail or fleet purchase or lease of any new 2001 or 2002 Chevrolet, Pontiac, GMC, Buick, Oldsmobile, or Cadillac car or truck. Delivery must be taken by Feb. 28, 2002. The program is titled "GM Overdrive." Saab, Saturn, and Hummer are not eligible.