At Least Twice A Year - GMC SIERRA CK2 1999 Owner's Manual

At Least Twice a Year

Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages are
working properly. Look for any other loose or damaged
safety belt system parts. If you see anything that might
keep a safety belt system from doing its job, have it
repaired. Have any torn or frayed safety belts replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag system
does not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace blade
inserts that appear worn or damaged or that streak or
miss areas of the windshield. Also see "Wiper Blades,
Cleaning" in the Index.
Air Cleaner Filter Restriction Indicator Check
Your vehicle has an indicator located on the air cleaner in
the engine compartment that lets you know when the air
cleaner filter is dirty and needs to be changed. Check
indicator at least twice a year or when your oil is changed,
whichever occurs first.
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See "Air Cleaner" in the Index for more information.
Inspect your air cleaner filter restriction indicator more
often if the vehicle is used in dusty areas or under off
road conditions.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. (See "Recommended Fluids and Lubricants" in
the Index.)
Manual Transmission Check
Check the transmission fluid level; add if needed. See
"Manual Transmission Fluid" in the Index. Check for
leaks. A fluid loss may indicate a problem. Have the
system inspected and repaired if needed.
Automatic Transmission Check
Check the transmission fluid level; add if needed. See
"Automatic Transmission Fluid" in the Index. A fluid
loss may indicate a problem. Check the system and
repair if needed.
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