check engine light GMC ENVOY 2007 Get To Know Guide

Getting to Know YourEnvoy16
PERFORMANCE & MAINTENANCE
Malfunction Indicator Lamp
(Service Engine Soon Lamp)
This instrument panel cluster lamp
illuminates under a variety of conditionswhen the OnBoard Diagnostics II (OBDII) system detects a malfunction in the
vehicle’s emission controls.
If the Malfunction Indicator Lamp
is lit steadily, check the gas cap toensure it is present and securely fastened
• Turn the cap clockwise until a ratch
eting sound is heard, signaling that itis secure.
•If this is the cause of the condition, a
few driving trips with the cap installedproperly should turn the light off.
See Section 3 of your Owner Manual.
Electronically Controlled
Air Suspension (if equipped)
Occasional whirring and/or hissing
sound under the rear of the vehicle
• This sound indicates that the sys
tem’s air compressor is operating to
provide a level ride height, and is normal.
See Section 4 of your Owner Manual.
Air Inflator System (if equipped)
Locate the air
inflator unit and kit
The inflator unit is in
the rear compart
ment on the passenger side of thevehicle, behind an
access cover.
An inflator kit, with a
22foot hose and three nozzle adapters,is located in the glove box.
Use the air inflator
1. Open the access cover.
2. Attach the appropriate nozzle adapter
to the end of the hose (if required).
3. Attach that end of the hose to the
object you are inflating. Attach theother end of the hose to the inflatoroutlet.
4. Press and release the on/off switch
to turn the air inflator on. An indicator
light verifies that the inflator is
running.
5. When inflation is complete, press and
release the on/off switch again.
6.Remove the hose from the outlet
(load leveling will not operate when
the hose is attached to the outlet).
See Section 5 of your Owner Manual.