I noticed a grinding sound, (kinda like the parking dog...or what ever its called) grinds when I'm in low range and shifting from drive to park. Also the dealer told me that it is normal to hear noise (sounds like turbo) after I shut the engine off. Any help out there. The trucks at the dealer right now and I want to know if these are normal or need to be fixed.

Ben

Mine has done this from day one. The only way that I know to avoid the noise is to wait 10 seconds after coming to a stop before shifting into park. Like you this only happens in low range.