tranny help

[chevyCowboy]

i posted this inthe tranny section only got one response thought i would try here

im not sure what trnny it is but the automatic in my back up gasser truck 88 chevy 1500 350sb is acting really wired i think its a 3speed with OD its got 1 2 d and od dont knwo much bout automatics it dosent shift at the right times. It seems to not shift untill its is at really high rpms then it shifts hard and it dosent seem to down shift. i check the fluid and its is full iv never had a automatic before some one please help could it be the torque converter going out??

 

[Schwind]

When was the last time the fluid and filter were changed? I would start there. that tranny is not electronically controled like the 94 and up.

 

[chevyCowboy]

i dont know when it was dun that is on my list of thing to try and do this week i dont have to drive it anymore casuse i just put a new starter in the 6.5 which was why i had to drive the backup

 

[Missy Good Wench]

Probably has a 700R4.

Several things can cause the late shifts.

Without knowing exactly what it is and doing some pressure checks I can't say for sure.

TV cable could have issues.
As mentioned, fluid and filter.
Sticky governor possibly

MGW