Page 30 of 359
1-18
Q:What's wrong with this?
A:The belt is twisted across the body.
CAUTION:
You can be seriously injured by a twisted belt. In
a crash, you wouldn't have the full width of the
belt to spread impact forces. If a belt is twisted,
make it straight so it can work properly, or ask
your dealer to fix it.
Page 315 of 359
6-39
Headlamp Horizontal Aiming
Turn the horizontal aiming
screw (A) until the indicator
(B) is lined up with zero.
Once the horizontal aim
is adjusted, then adjust
the vertical aim.
Headlamp Vertical Aiming
1. Find the aim dot on the lens of the lamps.
2. Measure the distance from the ground to the aim dot
on each lamp. Record this distance.
3. At the wall or other flat surface, measure from the
floor to the recorded distance and draw a horizontal
line the width of the vehicle.
Page 327 of 359

6-51
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted the
same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts and wheel nuts for your vehicle.
CAUTION:
Using the wrong replacement wheels, wheel bolts
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use
the correct wheel, wheel bolts and wheel nuts
for replacement.
NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper
height, vehicle ground clearance and tire or tire
chain clearance to the body and chassis.
See ªChanging a Flat Tireº in the Index for
more information.
Used Replacement Wheels
CAUTION:
Putting a used wheel on your vehicle is dangerous.
You can't know how it's been used or how far it's
been driven. It could fail suddenly and cause an
accident. If you have to replace a wheel, use a new
GM original equipment wheel.
Page 346 of 359

6-70
Horsepower
SLS 275 (bhp) @ 5600 rpm. . . . . . . . . . . . . . . . . . .
205 (kW) @ 5600 rpm
STS 300 (bhp) @ 6000 rpm. . . . . . . . . . . . . . . . . . .
224 (kW) @ 6000 rpm
Torque
SLS 300 (lb
-ft) @ 4000 rpm . . . . . . . . . . . . . . . . . .
407 (N´m) @ 4000 rpm
STS 295 (lb
-ft) @ 4400 rpm . . . . . . . . . . . . . . . . . .
400 (N´m) @ 4400 rpm
Firing Order 1
-2-7-3-4-5-6-8 . . . . . . . . . . . . . . . . . . .
Thermostat Starts To Open 177
-184F (81-85C) . .
Wheel Nut Torque
100 lb-ft (140 N´m)
Capacities
Transaxle (4T80-E) 15.0 quarts (14.2 L). . . . . . . . . .
Crankcase (Engine Oil with
Filter Change) 7.5 quarts (7.1 L). . . . . . . . . . . . . .
Engine Cooling System 12.5 quarts (11.8 L). . . . . . . .
Fuel Tank 18.5 gallons (70.1L). . . . . . . . . . . . . . . . . .
Refrigerant 2.0 lbs. (0.91 kg). . . . . . . . . . . . . . . . . . . . All capacities are approximate. When adding, be sure to
fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
Normal Maintenance
Replacement Parts
Air Filter Element AC Type A1208C. . . . . . . . . . . . .
Fuel Filter Element AC Type GF
-627 . . . . . . . . . . . .
Engine Oil Filter AC Type PF
-58 . . . . . . . . . . . . . . . .
PCV Valve AC Type CV
-774C . . . . . . . . . . . . . . . . . .
Spark Plugs PT16EPR
-C13 . . . . . . . . . . . . . . . . . . . .
(GM part 12561466)
Gap: 0.050 inches (1.3 mm)
Windshield Wiper
Blade (Hook Type) 22 inches (56.5 cm). . . . . . . . . .
Vehicle Dimensions
Wheel Base 112.2 inches (285.0 cm). . . . . . . . . . . . .
Length 201.0 inches (510.5 cm). . . . . . . . . . . . . . . . .
Height 55.4 inches (140.6 cm). . . . . . . . . . . . . . . . . . .
Width 75.0 inches (190.4 cm). . . . . . . . . . . . . . . . . . .
Front Tread 62.7 inches (159.3 cm). . . . . . . . . . . . . . .
Rear Tread 62.4 inches (158.6 cm). . . . . . . . . . . . . . .