2007 GMC ENVOY service indicator

Overload Protection
The air suspension system is equipped with
overload protection. Overload protection is
designed to protect the air suspension system,
and it is an indicator to the driver that the vehicle
is overloaded. When the overload protection
mode is on, it will not allow damage to the
air compressor. However, do not overload the
vehicle. SeeLoading Your Vehicle on page 349.
If the suspension remains at a low height, the rear
axle load has exceeded GAWR (Gross Axle
Weight Rating). When the overload protection
mode is activated, the compressor operates
for about 30 seconds to one minute without raising
the vehicle depending on the amount of overload.
This will continue each time the ignition is
turned on until the rear axle load is reduced
below GAWR.
Indicator Light
The indicator light on the inator switch in the rear
passenger compartment also serves as an
indicator for internal system error. If the indicator
light is ashing without the load leveling function
or the inator being active, turn off the ignition.
The next day turn on the ignition and check
the indicator light. The vehicle can be driven with
the light ashing, but if it is you should have
the vehicle serviced as soon as possible.
361

Gasolines containing oxygenates, such as ethers
and ethanol, and reformulated gasolines may be
available in your area. General Motors
recommends that you use these gasolines if they
comply with the specications described earlier.
However, E85 (85% ethanol) and other fuels
containing more than 10% ethanol must not be
used in vehicles that were not designed for
those fuels.
Notice:Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in your fuel system and also damage
the plastic and rubber parts. That damage
would not be covered under your warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing
additive called methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant where you
buy gasoline whether the fuel contains MMT.
General Motors recommends against the use of
such gasolines.Fuels containing MMT can reduce the life of spark
plugs and the performance of the emission
control system may be affected. The malfunction
indicator lamp may turn on. If this occurs,
return to your authorized GM dealer for service.
Fuels in Foreign Countries
If you plan on driving in another country outside
the United States or Canada, the proper fuel may
be hard to nd. Never use leaded gasoline or
any other fuel not recommended in the previous
text on fuel. Costly repairs caused by use of
improper fuel would not be covered by your
warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business
in the country where you will be driving.
384

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the
brake pads are worn and new pads are needed.
The sound may come and go or be heard all
the time your vehicle is moving, except when you
are pushing on the brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon the brakes will not work well. That
could lead to an accident. When you hear
the brake wear warning sound, have your
vehicle serviced.
Notice:Continuing to drive with worn-out
brake pads could result in costly brake repair.
Some driving conditions or climates may cause
a brake squeal when the brakes are rst applied or
lightly applied. This does not mean something is
wrong with your brakes.Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated,
inspect brake pads for wear and evenly tighten
wheel nuts in the proper sequence to GM torque
specications.
Brake linings should always be replaced as
complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return
to normal height, or if there is a rapid increase in
pedal travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc
brakes adjust for wear.
421

Light (cont.)
Service Four-Wheel-Drive
Warning Light....................................... 216
StabiliTrak
®Indicator................................ 208
StabiliTrak®Service.................................. 207
Tire Pressure........................................... 209
Lighting
Entry........................................................ 183
Exit.......................................................... 183
Loading Your Vehicle................................... 349
Locking Rear Axle....................................... 309
Lockout Protection....................................... 105
Locks
Delayed Locking...................................... 102
Door........................................................ 100
Lockout Protection................................... 105
Power Door............................................. 101
Programmable Automatic Door Locks....... 102
Rear Door Security Locks........................ 105
Loss of Control........................................... 318
Low Fuel Warning Light............................... 217
Luggage Carrier.......................................... 161
Lumbar
Manual Controls......................................... 10
Power Controls.......................................... 10
M
Maintenance Schedule
Additional Required Services.................... 510
At Each Fuel Fill...................................... 513
At Least Once a Month............................ 514
At Least Once a Year .............................. 514
Introduction.............................................. 504
Maintenance Footnotes............................ 511
Maintenance Record................................ 521
Maintenance Requirements...................... 504
Normal Maintenance
Replacement Parts............................... 519
Owner Checks and Services.................... 513
Recommended Fluids and Lubricants....... 517
Scheduled Maintenance........................... 507
Using....................................................... 505
Your Vehicle and the Environment............ 505
Malfunction Indicator Light........................... 210
Manual Lumbar Controls............................... 10
Manual Seats.................................................. 8
Memory Seat, Mirrors, and Pedals................ 12
Message
DIC Warnings and Messages................... 222
555

Safety Belts (cont.)
Questions and Answers About
Safety Belts............................................ 25
Rear Safety Belt Comfort Guides............... 38
Rear Seat Passengers............................... 35
Right Front Passenger Position.................. 35
Safety Belt Extender.................................. 41
Safety Belt Use During Pregnancy............. 34
Safety Belts Are for Everyone.................... 20
Safety Warnings and Symbols......................... 4
Scheduled Maintenance............................... 507
Seats
Head Restraints......................................... 17
Heated Seats............................................. 11
Manual........................................................ 8
Manual Lumbar.......................................... 10
Memory, Mirrors and Pedals...................... 12
Power Lumbar........................................... 10
Power Seats................................................ 9
Rear Seat Operation.................................. 18
Reclining Seatbacks................................... 14
Secondary Latch System............................. 475
Securing a Child Restraint
Center Rear Seat Position......................... 66
Rear Outside Seat Position........................ 63
Right Front Seat Position........................... 66
Security Light.............................................. 214Service........................................................ 380
Accessories and Modications.................. 380
Adding Equipment to the Outside of
Your Vehicle......................................... 382
California Proposition 65 Warning............. 381
Doing Your Own Work............................. 381
Engine Soon Light................................... 210
Four-Wheel-Drive Warning Light............... 216
Publications Ordering Information............. 545
Servicing Your Airbag-Equipped Vehicle......... 88
Setting the Time.......................................... 238
Sheet Metal Damage................................... 489
Shifting Into Park (P)................................... 127
Shifting Out of Park (P)............................... 129
Signals, Turn and Lane-Change.................. 172
Snow Plow.................................................. 354
Spare Tire................................................... 481
Accessory Inator..................................... 462
Installing.................................................. 469
Removing................................................ 466
Storing..................................................... 478
Specications, Capacities............................ 502
Speedometer............................................... 199
StabiliTrak
®System..................................... 309
StabiliTrak®Indicator Light........................... 208
StabiliTrak®Service Light............................. 207
Starting Your Engine................................... 114
559