Page 324 of 391

6-72 Vehicle Dimensions
Length
Tw o
-Door Convertible
Tw o
-Wheel Drive
Base Model 151.6 inches (385.1 cm). . . . . . . . . . .
Four
-Wheel
Drive Models 151.8 inches (385.6 cm). . . . . . . . . .
Four
-Door Hardtop
Tw o
-Wheel Drive
Base Model 162.6 inches (413.0 cm). . . . . . . . . . .
Four
-Wheel Drive
Base Model 162.8 inches (413.5 cm). . . . . . . . . . .
ZR2 Models 163.4 inches (415.0 cm). . . . . . . . . . . .
LT Models 163.0 inches (414.0 cm). . . . . . . . . . . . .
Width
Base Model 67.3 inches (171.0 cm). . . . . . . . . . . . . .
ZR2 Model 69.3 inches (176.0 cm). . . . . . . . . . . . . . .
LT Model 71.3 inches (181.1 cm). . . . . . . . . . . . . . . . Height
Tw o
-Door Convertible 66.5 inches (168.9 cm). . . . . .
Four
-Door Hardtop
Tw o
-Wheel Drive
Base Model 65.6 inches (166.6 cm). . . . . . . . . . . .
Four
-Wheel Drive
Base Model 66.3 inches (168.4 cm). . . . . . . . . . . .
ZR2 Model 66.5 inches (169.0 cm). . . . . . . . . . . . .
ZR2 Model with
Luggage Carrier 70.7 inches (178.0 cm). . . . . . . .
Tw o
-Wheel Drive
LT Model 67.2 inches (171.0 cm). . . . . . . . . . . . .
Four
-Wheel Drive
LT Model 70.0 inches (178.0 cm). . . . . . . . . . . . .
Wheelbase
Tw o
-Door Convertible 86.6 inches (220.0 cm). . . .
Four
-Door Hardtop 97.6 inches (248.0 cm). . . . . .
Tread
Front
Base and LT Model 57.5 inches (146.1 cm). . . . . . .
ZR2 Model 58.3 inches (148.1 cm). . . . . . . . . . . . .
Rear
Base and LT Model 57.5 inches (146.1 cm). . . . . . .
ZR2 Model 58.3 inches (148.1 cm). . . . . . . . . . . . .
Page 328 of 391

7-4
Part A: Scheduled
Maintenance Services
Using Your Maintenance Schedule
We at General Motors want to help you keep your
vehicle in good working condition. But we don't know
exactly how you'll drive it. You may drive very short
distances only a few times a week. Or you may drive
long distances all the time in very hot, dusty weather.
You may use your vehicle in making deliveries.
Or you may drive it to work, to do errands or in many
other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may need more
frequent checks and replacements. So please read the
following and note how you drive. If you have any
questions on how to keep your vehicle in good
condition, see your dealer.
This part tells you the maintenance services you should
have done and when you should schedule them. If you
go to your dealer for your service needs, you'll know
that GM
-trained and supported service people will
perform the work using genuine GM parts.The proper fluids and lubricants to use are listed in
Part D. Make sure whoever services your vehicle
uses these. All parts should be replaced and all
necessary repairs done before you or anyone else
drives the vehicle.
These schedules are for vehicles that:
carry passengers and cargo within recommended
limits. You will find these limits on your vehicle's
Tire
-Loading Information label. See ªLoading Your
Vehicleº in the Index.
are driven on reasonable road surfaces within legal
driving limits.
are driven off
-road in the recommended manner. See
ªOff
-Road Driving With Your Four-Wheel-Drive
Vehicleº in the Index.
use the recommended fuel. See ªFuelº in the Index.
Selecting the Right Schedule
First you'll need to decide which of the two schedules is
right for your vehicle. Here's how to decide which
schedule to follow:
Page 371 of 391

7-47
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
With an automatic transmission, the key should turn
to LOCK only when the shift lever is in PARK (P).
With a manual transmission, the key should turn to
LOCK only if you push the key in farther, while
turning it towards LOCK.
On all vehicles, the key should come out only in LOCK.
Parking Brake and Automatic Transmission
PARK (P) Mechanism Check
CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake's holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism's holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake. If your vehicle is four
-wheel drive, be sure the
transfer case is not in NEUTRAL.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
Page 373 of 391
7-49 Rear Axle (All) and Front Axle
(Four-Wheel Drive) Service
Check the gear lubricant level and add if needed. See
ªRear Axleº and ªFour
-Wheel Driveº in the Index.
A fluid loss may indicate a problem. Check the
system(s), and repair the system(s) if needed. Refer to
ªScheduled Maintenance Services,º earlier in this
section, to determine when to change the lubricant.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook
-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including
drums, wheel cylinders, calipers, parking brake, etc.
Check parking brake adjustment. You may need to have
your brakes inspected more often if your driving habits
or conditions result in frequent braking.
Page 375 of 391

7-51
USAGEFLUID/LUBRICANT
Hydraulic
Clutch SystemHydraulic Clutch Fluid
(GM Part No. 12345347 or
equivalent DOT
-3 brake fluid).
Parking Brake
Cable GuidesChassis Lubricant (GM Part
No. 12377985 or equivalent)
or lubricant meeting
requirements of NLGI # 2,
Category LB or GC
-LB.
Power
Steering SystemDEXRON-III Automatic
Transmission Fluid.
Manual
Transmission (All)
and Transfer Case
(Four
-Wheel-Drive)
GM Goodwrench Synthetic
Manual Transmission Fluid
(GM Part No. 12346190
-
1 quart) or equivalent
SAE 75W
-85 GL-4 gear oil.
Automatic
TransmissionDEXRON-III Automatic
Transmission Fluid.
USAGEFLUID/LUBRICANT
Key Lock CylindersMulti-Purpose Lubricant,
Superlube (GM Part
No. 12346241 or equivalent).
Manual
Transmission
Shift LinkageChassis Lubricant (GM Part
No. 12377985 or equivalent)
or lubricant meeting
requirements of NLGI # 2,
Category LB or GC
-LB.
Clutch Linkage
Pivot PointsChassis Lubricant (GM Part
No. 12377985 or equivalent)
or lubricant meeting
requirements of NLGI # 2,
Category LB or GC
-LB.
Floor Shift LinkageLubriplate Lubricant Aerosol
(GM Part No. 12346293 or
equivalent) or lubricant meeting
requirements of NLGI # 2
Category LB or GC
-LB.
Page 376 of 391
7-52
USAGEFLUID/LUBRICANT
Chassis LubricationChassis Lubricant (GM Part
No. 12377985 or equivalent)
or lubricant meeting
requirements of NLGI # 2,
Category LB or GC
-LB.
Front
Wheel BearingsWheel bearing lubricant
meeting requirements of
NLGI # 2, Category GC or
GC
-LB (GM Part No. 1051344
or equivalent).
Rear Axle (All)
and Front Axle
(Four
-Wheel Drive)
Axle Lubricant (GM Part
No. 12345977) or SAE
80W
-90 GL-5 gear lubricant.
USAGEFLUID/LUBRICANT
Hood Latch
Assembly,
Secondary Latch,
Pivots, Spring
Anchor and
Release PawlLubriplate Lubricant Aerosol
(GM Part No. 12346293 or
equivalent) or lubricant
meeting requirements of
NLGI # 2, Category LB
or GC
-LB.
Hood and
Door HingesMulti-Purpose Lubricant,
Superlube (GM Part
No. 12346241 or equivalent).
Weatherstrip
ConditioningDielectric Silicone Grease
(GM Part No. 12345579
or equivalent).