Gages - GMC 1994 Yukon Owner's Manual

Malfunction Indicator (Service Engine Soon) Lamp
SERVICE
ENGINE
SOON
The orange
Malfunction Indicator
(Service Engine Soon)
Lamp is located at the
middle right edge of
your instrument
cluster.
A computer monitors the operation of your fuel, ignition and emission
control systems. This light should come on when the ignition is on but the
engine is not running, as a check to show you its working. If it does not
come on at all, have it fixed right away. If it stays on, or comes on while you
are driving, the computer is indicating that you have a problem. You should
take your vehicle in for service soon.
NOTICE:
If you keep driving your vehicle with this light on, after a while
the emission controls won't work as well, your fuel economy
won't be as good, and your engine may not run as smoothly.
This could lead to costly repairs not covered by your warranty.
Check Gages Light
HECK
GAGES
The orange Check
Gages light is located
near the lower right
corner of the
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