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1999 CHEVR
L£T BLAZ£R
speed, gear range, temperature and engine load.
Four solenoids conneded to the PCM control shift
points and help promote shift smoothness.
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SE7.0.ML£SS
OP£R_~T:O~l
is made possible,
since the PCM acts as an interface between the
engine and transmission.
o
s"ln
-TIMING is controlled eledronically by signals
sent to the valve body's shift solenoids, which adl-
vate the shift valves and execute the gear changes.
o
BRAKE TRANSMISSION StilfT INTERLOCK is standard.
The interlock requires the driver to apply the brake
pedal to shift out of Park.
o
SECOND-GEAR-START FEATURE provides an extra
measure of control in hazardous driving conditions.
The driver can reduce torque to the drive wheels
by moving the gear selector to the Drive 2 position,
thereby increasing control during initial acceleration
on slippery surfaces.
o
"UTOI1A TIC TRANSMISSimJ flUID in the 4L60-E has a
fluid change interval of 50,000 miles· under normal
operating conditions.
"l\I\ainlenance needs vary with different uses and driVli1g conditions.
See
owner's
manual tor more IntormalJon.
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INST1>.-TR1>.C SVST€M
o·C"
TtiE fLY" StilfTING, from 2WD to 4WD Hi and
back at any speed is possible with the Insta-Trac sys-
tem. Standard on 4x4 models, Insta-Trac makes it easy
to shift into and out of four-wheel-drive without leav-
ing the cab. The system also includes a 4WD low
gear for more demanding 4WD maneuvers such as
dmbing steep grades or driving through deep snow
or mud (vehicle must be stopped to shift into 4-LO).
1::=.·..ll AUTOTR1>.C PUSH-BUITON
- - 1>.CTIV£ TRANSf£R C1>.S£
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C?Tic.tJ.~L
.:"iJTOTR;:"C ::;':'
3TEi~,
selected with the
Auto 4WD button, is capable of automatically
engaging four-wheel drive for maximum traction.
This system is not all-wheel driv ,but more accu-
rately termed a standby four-w eel-drive system.
Autotrac provides 100 percent r ar-wheel drive
until road conditions warrant a hange. When extra
traction is needed, an electroni control module
activates an electronic motor to transfer the torque
between the front and rear wh els - all within a
time frame that can be measur d in fractions of a
second. Once the speeds of th front and rear
prop shafts are equalized (tract on is regained),
the transfer case returns to its st ndby mode until
another speed differential occu s. If multiple, large
slip events are detected for a s stained time, the
system locks into the 4Hl (four- heel-drive high)
mode to protect the system's e ectric actuator
motor. After a time, the system eturns to the auto-
matic 4WD standby mode. Aut trac also features a
transfer case neutral position fa easy towing
behind a recreational vehicle.
SUS.p£l~SION
fRONT
pension with stabilizer bar equi s the front of every
Blazer model. SLA Suspension h Ips the front wheels
"step" over bumps independe tly for a stable
ride and enhanced control, whil keeping the tires
fully in contact with the road for ess tire wear and
better traction,
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T\::O-;·'JH££:"-C~IVt
:'--:OOEL3 ha e computer-
selected, friction-free coil sprin s for squeak-
free operation.
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:'~OCE
..5 ar equipped with
computer-selected torsion bars for optimum ride
and handling. The front differen ial is mounted to
the frame with rubber bushings to isolate road
bumps and jolts. The independ nt front suspension
minimizes the protrusion of the t nsmission, transfer
case and driveshafts below the
ody for additional
protection when traveling over neven terrain.
1999 .pRODUCT INf'ORMJI.TlON GUIDE
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