Hummer H2. Manual — part 156
YUGO
YUGO
X
(4)
X
(2)
2003 2WD
X
...
...
...
...
X
(2)
...
(1)
Press TRACS or STC switch located on dash. Indicator light will illuminate when
system is disabled.
(2)
Press STC/DSTC switch on center console and hold down for more than half a
second. The light in the switch will go off when system is disabled.
(3)
Press STC, DSA or DSTC switch located on dash to disable system. Indicator light
will illuminate when system is disabled. On models equipped with winter/wet
driving mode, depress the "W" switch on center console. The LED on switch will
turn off when winter/wet driving mode is disengaged.
(4)
Cannot be shifted to 2WD.
Application FWD RWD Part Time 4WD Full Time 4WD AWD TCS Do Not Test
GV & GVL
1985-91
X
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...
...
...
...
...
1998 Chevrolet Pickup C1500
GENERAL INFORMATION Traction Control, 4WD & AWD Identification & Disable Procedures - All Models
GENERAL INFORMATION
Clutch Trouble Shooting
ALL MODELS
CLUTCH TROUBLE SHOOTING
Problem & Possible Cause
Action
Clutch Chatters/Grabs
Incorrect Pedal Adjustment
Adjust Free Play
Worn Input Shaft Spline
Replace Input Shaft
Binding Pressure Plate
Replace Pressure Plate
Binding Throw-Out Lever
Check Throw-Out Lever, Check Throw-Out
Bearing, Check Bearing Retainer
Uneven Pressure Plate Contact With
Flywheel
Align/Replace Worn Parts
Transmission Misaligned
Align Transmission
Worn Pressure Plate
Replace Clutch Assembly
Oil-Saturated Disc
Replace Clutch Assembly, Repair Oil Leak
Loose Engine Mounts
Replace Engine Mounts
Clutch Pedal Sticks Down
Clutch Cable Binding
Replace Clutch Cable
Weak Pressure Plate Springs
Replace Clutch Assembly
Binding Clutch Linkage
Lubricate Linkage
Broken Clutch Pedal Return Spring
Replace Return Spring
Clutch Will Not Release
Oil-Saturated Disc
Replace Clutch Assembly, Repair Oil Leak
Defective Disc Face
Replace Clutch Assembly
Disc Sticking on Input Shaft Splines
Replace Disc/Input Shaft
Binding Pilot Bearing
Replace Pilot Bearing
Faulty Clutch Master Cylinder
Replace Master Cylinder
Faulty Clutch Slave Cylinder
Replace Slave Cylinder
Blown Clutch Hose
Replace Hose
Sticky Throw-Out Bearing Sleeve
Clean/Lube Sleeve
Clutch Cable Binding
Replace Clutch Cable
Broken/Loose Bellhousing
Check Bellhousing
Rattling/Squeaking
Broken Throw-Out Lever Return
Spring
Replace Return Spring
Faulty Throw-Out Bearing
Replace Throw-Out Bearing
1998 Chevrolet Pickup C1500
GENERAL INFORMATION Clutch Trouble Shooting
1998 Chevrolet Pickup C1500
GENERAL INFORMATION Clutch Trouble Shooting
Faulty Clutch Disc
Replace Clutch Disc
Faulty Pilot Bearing
Replace Pilot Bearing
Worn Throw-Out Bearing
Replace Throw-Out Bearing
Dry Bearing Retainer Slide For
Throw-Out Bearing Sleeve
Lubricate Slide
Slipping
Faulty Pressure Plate
Replace Clutch Assembly
Worn Clutch Disc
Replace Clutch Assembly
Incorrect Alignment
Realign Clutch Assembly
Faulty Clutch Slave Cylinder
Replace Slave Cylinder
No Pedal Pressure
Leaky Hydraulic System
Check Clutch Master Cylinder, Check Clutch
Slave Cylinder
Check Clutch Hose
Broken Clutch Cable
Replace Clutch Cable
Faulty Throw-Out Lever
Replace Throw-Out Lever
Broken Clutch Linkage
Repair Clutch Linkage
Noisy Clutch Pedal
Faulty Safety Switch
Check/Replace Switch
Noisy Self-Adj. Ratchet
Replace Ratchet
Dry Throw-Out Bearing
Replace Throw-Out Bearing
Dry Pilot Bearing
Replace Pilot Bearing
Worn Input Shaft
Replace Input Shaft
1998 Chevrolet Pickup C1500
GENERAL INFORMATION Clutch Trouble Shooting
GENERAL INFORMATION
Manual Transmission Trouble Shooting
INTRODUCTION
There are many times when the transmission is incorrectly blamed for shifting problems or noises that are
actually caused by other reasons. Shift difficulties are frequently caused by conditions outside of the
transmission or transaxle. Typical conditions include: shift linkage, shift cables, alignment of engine to
transmission, worn engine mounts or clutch problems. Drive train noises may come from many sources such as
tires, road surfaces, wheel bearings, differentials, engine or exhaust system. Repairing or overhauling
transmission will not cure these problems.
No manufacturer makes a perfectly quiet transmission. Gear rollover noise is present in most constant mesh
transmissions and will tend to disappear when the clutch is disengaged or transmission is placed in gear. If
clutch is properly adjusted, clutch release bearing noise will disappear when release bearing is moved enough to
slide release bearing away from pressure plate.
Trouble shooting can be helped by driving vehicle on a smooth level road to help eliminate tire and body noise.
Note whether noise occurs on acceleration, coasting, deceleration or steady driving conditions. Some problems
may only occur when transmission is either hot or cold. Gear lubricant that is too thick can cause hard shifting
on cold mornings before engine is warm and vehicle has been driven.
MANUAL TRANSMISSION/TRANSAXLE TROUBLE SHOOTING
Condition
Possible Cause
Noisy In Forward Gears
Low Gear Oil Level, Loose Bellhousing Bolts, Worn
Bearings Or Gears
Clunk On Deceleration
(FWD Only)
Loose Engine Mounts, Worn Inboard CV Joints, Worn
Differential Pinion Shaft, Oversized Side Gear Hub
Counterbore in Case
Gear Clash When Shifting
Forward Gears
Clutch Out Of Alignment, Shift Linkage Damaged Or Out
Of Adjustment, Gears Or Synchronizers Damaged, Low
Gear Oil Level
Transmission Noisy When
Moving (RWD Only);
Quiet In Neutral With
Clutch Engaged
Worn Rear Output Shaft Bearing
Gear Rattle
Worn Bearings, Worn Gear Oil, Low Gear Oil, Worn Gears
Steady Ticking At Idle
(Increases With RPM)
Broken Tooth On A Gear
Gear Clash When Shifting
Forward Gears
Worn Or Broken Synchronizers, Faulty Clutch
Loud Whine In Reverse
Normal Condition
(1)
Noise When Stepping On
Faulty Release Bearing, Worn Pilot Bearing
1998 Chevrolet Pickup C1500
GENERAL INFORMATION Manual Transmission Trouble Shooting
1998 Chevrolet Pickup C1500
GENERAL INFORMATION Manual Transmission Trouble Shooting
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