noisey duramax
I have a 2002 silverado 2500 hd d/a with 117000 miles. I am presently returning from Alaska. I made this trip before in 2006 pullling a 13000 pound 5th wheel. This trip has the same truck and trailer but it seems to me that the motor is extremely noisey - specially under load.
The truck is mostly as it came from the factory, including the exhaust.
I would enjoy comments from the experienced people on this forum regarding the following:
1. Could the excess noise be caused by worn timing belts/chains causing a retard or advance condition for timing and injection.
2. The truck has a terrible drone at about 45 to 55 mph. Could the drone be caused by a worn out muffler (loose baffel, etc) and could that contribute to the louder engine noise.
I have had good luck with this truck, but between the road noise and the engine noise, I way have to look at trading.
Any comments would be appreciated.
Thanks
Denverdale
2013 Silverado LTZ 2500HD 4WD EXT CAB Short bed
DURAMAX/ALLISON
BLUE GRANITE METALLIC Line X bedliner