Exhaust System - GMC 1999 Sierra 1500 Pickup Owner's Manual

Fuse
Block
K2644
The fuse block is in the instrument panel on the driver's side.
You can remove fuses with a fuse extractor, if you have one. To remove
fuses if you don't have one, hold the end of the fuse between your thumb
and index finger and pull straight out.
Be sure to use the correct fuse. If you ever have a problem on the road and
don't have a spare fuse, you can "borrow'' one of the correct value. Just pick
some feature of your vehicle that you can get along without-like the radio or
cigarette lighter-and use its fuse, if it is of the value you need. Replace
it
as soon as you can. See "Fuses and Circuit Breakers"
in the Index for more
information.
Exhaust System
To help prevent damage to your exhaust system, do not continue to drive
your vehicle if you notice:
Engine misfiring
Loss of performance
Other unusual operating conditions
Have your engine and exhaust system serviced regularly.
Three- Way Cataiytic Converter
Your vehicle's three-way catalytic converter is designed to reduce the
pollutants in your vehicle's exhaust. Use only unleaded fuel in your vehicle. If
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