7-50
Automatic Transmission Shift Lock Control
System Check
CAUTION:
When you are doing this check, the vehicle could
move suddenly. If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough
room around the vehicle. It should be parked
on a level surface.
2. Firmly apply the parking brake. See ªParking Brakeº
in the Index if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the ON position,
but don't start the engine. Without applying the
regular brake, try to move the shift lever out of
PARK (P) with normal effort. If the shift lever
moves out of PARK (P), your vehicle needs service.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.
7-51
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.
7-55
USAGEFLUID/LUBRICANT
Windshield
Washer SolventGM Optikleen Washer
Solvent (GM Part No. 1051515)
or equivalent.
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)
Synchromesh Transmission
Fluid (GM Part No. 12345349
or equivalent).
USAGEFLUID/LUBRICANT
Automatic
TransmissionDEXRON-III Automatic
Transmission Fluid.
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.
