shane colvin
Newbie
Not sure what this is supposed to be hooked up to or what it’s called just have it capped off for now .. View media item 32354
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That makes sense . I have a 700r now . So am I right just having it capped off ?That originally was the vacuum port for a 400 transmission modulator
That makes sense . I have a 700r now . So am I right just having it capped off ?
"3L80"That originally was the vacuum port for a 400 transmission modulator
"3L80"
Richard
Same.. but ya know, this is GMT400-land, none of these trucks came with a TH400I go back before the 3L80 designation was popular.
Not true , My 1988 K3500 came with a THM 400 RPO code M 40Same.. but ya know, this is GMT400-land, none of these trucks came with a TH400
Richard
Not true , My 1988 K3500 came with a THM 400 RPO code M 40
The 4L80E is a THM 400 with an over drive that is electrically controlledWow, I didn't know they installed TH400's in any GMT400;s. I just assumed a 4L80 of some sort was available with the new design of trucks.
If anything, the TH400 might be more durable than the 4L80.