Cooling System - GMC 2009 Envoy Denali Owner's Manual

Consistency of Readings
Always check the fluid level at least twice using the
procedure described previously. Consistency (repeatable
readings) is important to maintaining proper fluid level. If
inconsistent readings persist, contact your dealer/retailer.
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 on page 6-12.
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.
Notice: Use of the incorrect automatic transmission
fluid may damage the vehicle, and the damages may
not be covered by the vehicle's warranty. Always
use the automatic transmission fluid listed in
Recommended Fluids and Lubricants on page 6-12.
•
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; then flip the handle down
to lock the dipstick in place.
5-24

Cooling System

The cooling system allows the engine to maintain the
correct working temperature.
5.3L V8 Engine shown, 4.2L L6 Engine similar
A. Coolant Recovery Tank
B. Radiator Pressure Cap
C. Engine Fan