DontBanCooter

Kind of a noob question, but I know nothing about trannys... any idea on how to know which tranny you have? '05 Silverado... VIN.. or something to look for under the truck?

Slammed96

iTrader: (5)

If it's a 1500 with a 5.3, or 4.8, Im willing to bet my life savings you have a 4L60E in there. You could check your VIN or just look at the tranny, I believe it should say on either the side or the pan.

03sierraslt

iTrader: (22)

Joe Gibbs ex cab should be a auto, if so it's a 60e unless someone swapped it. Does the bell housing have a little thin metal plate that can be popped off? It should be about 2" in diameter. Like pop can thin.

80e has a removable lower bellhousing where as the 60/65/70e is one piece, pans are different, case is different. If you are not sure just post a pic of the pan.

1FastBrick

iTrader: (17)

There is an M code in the RPO that will tell you what trans you have. This tag is in the Glove box. It's basically a build list of every option your truck is equipped with.

In 2005 it was most likely an M30 4L60E auto transmission.

Here is a list of all the ones I know of that would apply to Silverado's

M30= 4L60E
M32= 4L65E
MT1= 4L80E
MYC= 6L80E
MYD= 6L90E

MG5= Wide ratio NV3500 manual
M50= Close ratio NV3500 manual