Manual Transmission Fluid - GMC Sierra Classic 2007 Owner's Manual

Manual Transmission Fluid

When to Check Manual Transmission
Fluid
A good time to have your manual transmission
fluid checked is when the engine oil is changed.
See Additional Required Services (Gasoline
Engine) on page 617 to find out when to change
your transmission fluid.
How to Check Manual
Transmission Fluid
Because this operation can be a little difficult, you
may choose to have this done at the dealership
service department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading.
Notice: Too much or too little fluid can
damage your transmission. Too much can
mean that some of the fluid could come out
and fall on hot engine parts or exhaust system
parts, starting a fire. Too little fluid could
cause the transmission to overheat. Be sure to
get an accurate reading if you check your
transmission fluid.
496
Check the fluid level only when your engine is off,
the vehicle is parked on a level place, and the
transmission is cool enough for you to rest
your fingers on the transmission case.
Then, follow these steps:
5-speed for VORTEC™ 4300 V6 and 4800 V8 engines
shown, other manual transmissions similar
1. Remove the filler plug.
2. Check that the lubricant level is up to the
bottom of the filler plug hole.
3. If the fluid level is good, install the plug and be
sure it is fully seated. If the fluid level is low,
add more fluid as described in the next steps.