GMC 2004 Canyon - Manual (Page 286)

How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. See Recommended
Fluids and Lubricants on page 6-13.
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 doesn’t take much fluid, generally less
than one pint (0.5 L). Don’t overfill.
Notice: We recommend you use only fluid labeled
DEXRON
® -III, because fluid with that label is made
especially for your automatic transmission. Damage
caused by fluid other than DEXRON
® -III is not
covered by your new vehicle warranty.
• After adding fluid, recheck the fluid level as
described under “How to Check” listed previously.
• When the correct fluid level is obtained, push the
dipstick back in all the way; then flip the handle
down to lock the dipstick in place.
Manual Transmission Fluid
When to Check
A good time to have it checked is when the engine oil is
changed. However, the fluid in your manual transmission
doesn’t require changing.
How to Check
Because this operation can be a little difficult, you may
choose to have this done at your GM 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 little fluid could cause
the transmission to overheat. Be sure to get an
accurate reading if you check your transmission
fluid.
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.
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