Two problems related to transmission gear slipping have been reported for the 2001 Chevrolet Silverado. The most recently reported issues are listed below.
Rebuilt transmission still slipping now also is geared wrong and clunking when shifting from p/r/n/d was not happening befor rebuilding it. Handed bulleten stating it was normal. Engine has knocking and pinging all the time. Gm will not do anything about it is normal. They gave us a 100,000 mile 6 yr warranty except there is a clause that states it does not cover pre existing conditions and they refuse to send us something stating this is not considered a pre exisiting condition it's in our file and said they would do notthing more for me said good bye and hung up. Engine is also losing gas mileage, power and is missing. We are concerned that it may cause problems while we are towing our boat based on your service bulletin number 01058 builetin sequence number 620. We are concerened that it may cause serious injury or loss of life. Dt.
While placing vehicle in drive transmission will slip. This problem has occurred on several occasions. Consumer will contact dealer.