Page 1 of 484

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-7
Safety Belts
.............................................1-11
Child Restraints
.......................................1-30
Airbag System
.........................................1-51
Restraint System Check
............................1-67
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-14
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-19
Mirrors
....................................................2-37
OnStar
®System
......................................2-47
HomeLink®Wireless Control System
...........2-49
Storage Areas
.........................................2-53
Sunroof
..................................................2-60
Vehicle Personalization
.............................2-60
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-20
Warning Lights, Gages, and Indicators
........3-31
Driver Information Center (DIC)
..................3-49
Audio System(s)
.......................................3-62Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-49
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-44
Four-Wheel Drive
.....................................5-45
Front Axle
...............................................5-45
Bulb Replacement
....................................5-46
Windshield Wiper Blade Replacement
.........5-48
Tires
......................................................5-50
Appearance Care
.....................................5-80
Vehicle Identi cation
.................................5-89
Electrical System
......................................5-90
Capacities and Speci cations
...................5-102
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-11
Index................................................................ 1
2005 Chevrolet TrailBlazer/TrailBlazer EXT
Owner Manual
M
Page 8 of 484
Front Seats
Manual Seats
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle
is moving. The sudden movement could startle
and confuse you, or make you push a pedal
when you do not want to. Adjust the driver’s
seat only when the vehicle is not moving.
Lift the bar located under the front of the seat to unlock
it. Slide the seat to where you want it and release
the bar. Try to move the seat with your body to be sure
the seat is locked in place.
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Page 9 of 484
Power Seats
If you have this feature, the power seat controls are
located on the outboard side of the front seat cushions.
The horizontal control adjusts the seat cushion and
the vertical control adjusts the seatback.
Move the front of the seat control up or down to
adjust the front portion of the cushion.
Move the rear of the seat control up or down to
adjust the rear portion of the cushion.
Lift up or push down on the center of the seat
control to move the entire seat up or down.
To move the seat forward or rearward, slide the
seat control forward or rearward.
To recline the seatback, press the vertical control
rearward. To raise the seatback, press the vertical
control forward. SeeReclining Seatbacks on
page 1-5for more information.
Manual Lumbar
If your vehicle has this
feature, there is a knob
located on the outboard
side of the driver’s seat.
Turn the knob counterclockwise to increase lumbar
support and clockwise to decrease lumbar support.
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Page 13 of 484
Head Restraints
Adjust your head restraint so that the top of the restraint
is closest to the top of your head. This position
reduces the chance of a neck injury in a crash.
The head restraints lock into place when raised. To
release the head restraint and lower it, press the
tab located on the top of the seatback.
Rear Seats
Rear Seat Operation
Your vehicle may have a folding rear seat which lets
you fold the seatbacks down for more cargo space.
Pull up on the loop located where the seat cushion
meets the seatback to fold the seat cushion up and out
of the way. This will allow the seatback to fold at
and increase the cargo area.
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Page 14 of 484
The rear seatback
levers are located on the
outboard side of the
rear seatbacks.
Pull the seatback toward you as you lift up on the lever.
The head restraint will automatically fold out of the
way when the seatback is folded down.
To raise the seatbacks, lift up the seatbacks and push
on them until they lock into the upright position.
Push and pull on the seatbacks to make sure that they
are latched securely. Then fold the bottom seat
cushion back into place.To return the head restraint to the upright position,
reach behind the seat and pull the restraint up until it
locks into place. Push and pull on the head restraint to
make sure that it is latched securely.
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Page 15 of 484

Rear Seats (TrailBlazer EXT)
The second row seat is a 65/35 split seat which may be
folded and tumbled. Use this feature for gaining
access to the third row seats.
To fold and tumble the second row seat(s), do the
following:
1. Push the head restraints fully down.
2. Fold the seatback at on the seat by pulling up on
the front part of the fold and tumble lever. The lever
is located on the outboard side of the seat and is
indicated as 1 on the handle and side of seatback.3. Release the rear set of seat hooks from the oor
pins by pulling up on the rear part of the lever
indicated as 2 on the handle and side of seatback.
This enables the seat to be tumbled forward.
Returning the Seats to an Upright Position
To return the seat(s) to the upright position, do the
following:
1. Pull the bottom of the seat release lever towards
the front of the vehicle to release the seat. The
lever is located at the bottom of the seat cushion on
the outboard side of each second row seat.
2. Return the seat to the oor pins by rotating the seat
down to reengage the seat hooks.
3. Try to raise the seat to check that it is locked down.
4. Pull the seat back up to return it to the upright
position.
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Page 23 of 484
Driver Position
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here is how to wear
it properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To see
how, see “Seats” in the Index.3. Pick up the latch plate and pull the belt across you.
Do not let it get twisted.
The shoulder belt may lock if you pull the belt
across you very quickly. If this happens, let the belt
go back slightly to unlock it. Then pull the belt
across you more slowly.
4. Push the latch plate into the buckle until it clicks.
Pull up on the latch plate to make sure it is secure.
If the belt is not long enough, seeSafety Belt
Extender on page 1-29.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.
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Page 24 of 484
5. To make the lap part tight, pull up on the
shoulder belt.
The lap part of the belt should be worn low and snug on
the hips, just touching the thighs. In a crash, this
applies force to the strong pelvic bones. And you would
be less likely to slide under the lap belt. If you slid
under it, the belt would apply force at your abdomen.
This could cause serious or even fatal injuries. The
shoulder belt should go over the shoulder and across
the chest. These parts of the body are best able to take
belt restraining forces.
The safety belt locks if there is a sudden stop or crash,
or if you pull the belt very quickly out of the retractor.
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