One problem related to transmission fluid leaking has been reported for the 2002 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 GMC Sierra 2500 based on all problems reported for the 2002 Sierra 2500.
Went out to the truck to go to work and the truck wouldn't move. Transmission line leaking out all fluid. Corroded and had to be replace just like the brake lines.