Manual Transmission Fluid - GMC Sierra 2005 Owner's Manual

Consistency of Readings
Always check the fluid level at least twice using the
procedures described previously. Consistency
(repeatable readings) is important to maintaining proper
fluid level. If inconsistent readings persist, check the
transmission breather to be sure it is clean and
unclogged. If readings are still inconsistent, contact
your dealer.
How to Add Automatic Transmission
Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. See Recommended
Fluids and Lubricants (Gasoline Engine) on page 6-14.
Add fluid only after checking the transmission fluid
while it is hot. A cold check is used only as a reference.
If the fluid level is low, add only enough of the proper
fluid to bring the level up to the HOT area for a hot
check. It does not take much fluid, generally less than
one pint (0.5 L). Do not overfill.
5-32
Notice: Use of the incorrect automatic transmission
fluid may damage your vehicle, and the damages
may not be covered by your warranty. Always
use the automatic transmission fluid listed in
Recommended Fluids and Lubricants (Gasoline
Engine) on page 6-14.
•
After adding fluid, recheck the fluid level as
described under "How to Check Automatic
Transmission Fluid," earlier in this section.
•
When the correct fluid level is obtained, push the
dipstick back in all the way.

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 6-7 to find out when to change your
transmission fluid.