03 2500hd and 06 avalanche
 

i need to swap some parts over from the avalanche to the 2500hd silverado. i have a coolant leak, so i need to take coolant parts, seats, passenger window motor. and a few other things...will these parts match up? the avalanche has leather inter. heated seats, motor foot pedals, passenger and driver seat controls... 2500hd has leather only driver seat controls

? anyone know