One problem related to manifold/header/muffler/tail pipe has been reported for the 2000 Chevrolet C/k 3500. The most recently reported issues are listed below.
Consumer states vehicle pulls to the right and left when braking, in addition, there was a rattle noise in the left front end when going over bumps. The left rear tail light bulb was inoperative. The left front wheel cover came off. The tail pipe made a rattle noise, the dealer replaced the tail pipe. The fog light bulb was inoperative. The front brakes made a grinding noise when they were applied. The air condition was not cooling properly. The wood trim on the dash was loose. The right rear axle seal leaked. The plastic compartment above the glove box was cracked. The base of the windshield was cracked.