Chevrolet 2007 Avalanche, Owner'S Manual

Page: 579 / 628

(f) Lubricate all key lock cylinders, hood latch
assembly, secondary latch, pivots, spring anchor,
release pawl, midgate hinges, side storage box
door hinges, tailgate hinges, tailgate linkage, outer
tailgate handle pivot points, latch bolt, fuel door
hinge, locks, and folding seat hardware. More
frequent lubrication may be required when exposed
to a corrosive environment. Applying silicone
grease on weatherstrips with a clean cloth will
make them last longer, seal better, and not stick
or squeak.
(g) Check vent hose at transfer case for kinks and
proper installation.
(h) Change automatic transmission fluid and filter
if the vehicle is mainly driven under one or
more of these conditions:
− In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C)
or higher.
− In hilly or mountainous terrain.
− When doing frequent trailer towing.
− Uses such as found in taxi, police, or
delivery service.
(i) Drain, flush, and refill cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 465 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and filler neck. Pressure test the cooling
system and pressure cap.
(j) A fluid loss in any vehicle system could indicate
a problem. Have the system inspected and repaired
and the fluid level checked. Add fluid if needed.
(k) Inspect system. Check all fuel and vapor lines
and hoses for proper hook-up, routing, and
condition. Check that the purge valve works
properly, if equipped. Replace as needed.
(l) If you drive regularly under dusty conditions,
inspect the filter at each engine oil change.
(m) Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
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