LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
GMC
>>
1985
>>
Forward Control 4.8 T, Automatic, 400/M40
>>
Repair and Diagnosis
>>
Transmission
>>
Automatic Trans
>>
Servicing - A/T
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Servicing - A/T
Expand All (for easy ctrl-f)
Collapse All
Lubrication
Service Intervals
Checking Fluid Level
Recommended Fluid
Fluid Capacities
Draining & Refilling
Adjustments
Detent (Downshift) Or Throttle Valve (T.V.) Cable
Diesel Engines
Gasoline Engines
Detent (Downshift) Switch
THM 400 Only
Vacuum Regulator Valve Test (Diesel Only)
Notes
Diagnosis & Testing
Shift Linkage
"C", "K" & "G" Models
Astro, Safari & "S" Models
Neutral Safety Switch
With Column Mounted Switch
With Transmission Mounted Switch
Vacuum Hose Diagram(S)
Torque Specifications