Originally Posted by brianm
GMC 2500HD 6.6L Diesel, 3.73 Axle:
Max Payload: 3,658
Curb Weight: 6,342
Rear Axle Capacity: 6,200
Those numbers sound like they are for a gasser. As previously mentioned, get the payload capacity off the Tire and Loading Information sticker on the driver's door post. Unless some huge changes have been made recently, no 250/2500 series diesel has a payload anywhere near 3,600#.