Black plate (5,1)
GMC Sierra Owner Manual - 2011
Service and Maintenance
11-5
At Each Fuel Stop
.
Engine oil level check.
See
Engine Oil on page 10
‑
7
.
.
Engine coolant level check.
See
Engine Coolant on
page 10
‑
18
.
.
Windshield washer fluid level
check. See
Washer Fluid on
page 10
‑
26
.
Once a Month
.
Tire inflation pressures check.
See
Tire Pressure on
page 10
‑
61
.
.
Tire wear inspection. See
Tire
Inspection on page 10
‑
67
.
.
Sunroof track and seal
inspection, if equipped.
See
Sunroof (Extended Cab) on
page 2
‑
20
or
Sunroof (Crew
Cab) on page 2
‑
21
.
Once a Year
.
See
Starter Switch Check on
page 10
‑
35
.
.
See
Automatic Transmission
Shift Lock Control Function
Check on page 10
‑
36
.
.
See
Ignition Transmission Lock
Check on page 10
‑
36
.
.
See
Park Brake and P (Park)
Mechanism Check on
page 10
‑
36
.
.
Accelerator pedal check for
damage, high effort, or binding.
Replace if needed.
.
Underbody flushing service.
First Engine Oil Change After
Every 40 000 km/25,000 Miles
.
Four
‐
wheel drive only: Transfer
case fluid change (extreme duty
service) for vehicles mainly
driven off
‐
road in four
‐
wheel
drive. Vehicles used for farming,
mining, forestry, Department of
Natural Resources (DNR), and
snow plowing occupations meet
this definition. Check vent hose
at transfer case for kinks and
proper installation. Check to be
sure vent hose is unobstructed,
clear, and free of debris. During
any maintenance, if a power
washer is used to clean mud
and dirt from the underbody,
care should be taken to not
directly spray the transfer case
output seals. High pressure
water can overcome the seals
and contaminate the transfer
case fluid. Contaminated fluid
will decrease the life of the
transfer case and should be
replaced.