6-25
Automatic Transmission Fluid
(Allison
R
Only)
When to Check and Change
A good time to check your automatic transmission fluid
level is when the engine oil is changed.
Change both the fluid and filter every 25,000 miles
(41 500 km) if the vehicle is mainly driven under one
or more of these conditions:
D In heavy city traffic where the outside temperature
regularly reaches 90
_F (32_C) or higher.
D In hilly or mountainous terrain.
D When doing frequent trailer towing.
D Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions,
change the fluid and filter every 50,000 miles (83 000 km).
See “Scheduled Maintenance Services” in the Index.
How to Check
Because this operation can be a little difficult, you
may choose to have this done at the dealership
service department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading on the dipstick.
NOTICE:
Too much or too little fluid can damage your
transmission. Too much can mean that some of
the fluid could come out and fall on hot engine
parts or exhaust system parts, starting a fire.
Be sure to get an accurate reading if you check
your transmission fluid.
Wait at least 30 minutes before checking the
transmission fluid level if you have been driving:
D When outside temperatures are above 90_F (32_C).
D At high speed for quite a while.
D In heavy traffic
--
especially in hot weather.
D While pulling a trailer.
Summary of Contents for 2001 Sierra 1500 Pickup
Page 1: ......
Page 163: ...2 80 The Instrument Panel Your Information System ...
Page 332: ...5 26 Front Position 2WD 1500 Series Front Position All Other Models ...
Page 335: ...5 29 Front Position 2WD 1500 Series Front Position All Other Models ...
Page 418: ...6 76 ...
Page 432: ...Scheduled Maintenance Gasoline Engines 7 7 ...
Page 433: ...Scheduled Maintenance Gasoline Engines 7 8 ...
Page 454: ...7 29 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED ...
Page 455: ...7 30 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED ...