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Help!! Transmission Trouble

W

Wayne Hittle

Member
Joined
Dec 26, 2021
Messages
17
Location
Arkansas
Occupation
Retired
I have a 1980 C6000 dump truck with 366 motor and automatic transmission that is not shifting. Drive, reverse and neutral work but I think in Drive it is stuck in second. When manually shifting thru 1st 2nd and 3rd there is no change. The oil level is correct and not burnt looking. When manually shifting an automatic this old are you physically moving the spool in the valve body or does it use solenoid valves to shift? Any help would be much appreciated.
 
Truck Shop

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
16,921
Location
WWW.
Possibly the governor, depending on type of transmission, which would help.
 
W

Wayne Hittle

Member
Joined
Dec 26, 2021
Messages
17
Location
Arkansas
Occupation
Retired
Ya sorry I don’t know will try to find out.
It just puzzles me why I can’t shift manually.
 
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