How Do I tell what Auto Trans I have??
I think I'd much rather read the door jamb sticker than crawl under and count bolts. I operate on the "do the simple things first" theory. If the sticker is missing or unreadable, then under the truck you go.
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glc That's up to you. Personally, I would trust looking at the trans itself over a damn sticker.
I would hate to have purchased a new tranny , then try to install it only to find out the jam sticker was incorrect.
Counting the bolts will confirm the jam sticker. Like I said -
14 bolts = 4r70w
20 bolts = E4OD
__________________________________________________ __________
ridinHi Drivers Side Doorjam - Trans Code U = 4r70w / E = E40D. Ident local - circled in blue.

The trans is also tagged -

I would hate to have purchased a new tranny , then try to install it only to find out the jam sticker was incorrect.

Counting the bolts will confirm the jam sticker. Like I said -
14 bolts = 4r70w
20 bolts = E4OD
__________________________________________________ __________
ridinHi Drivers Side Doorjam - Trans Code U = 4r70w / E = E40D. Ident local - circled in blue.

The trans is also tagged -
Last edited by jbrew; Mar 16, 2008 at 11:44 AM.








