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MODEL SELECTION INDEX
VT SERIES II - COMMODORE, CALAIS SERVICE INFORMATION
SECTION 7C3 - HYDRA-MATIC 4L60-E AUTOMATIC TRANSMISSION: HYDRAULIC / MECHANICAL DIAGNOSIS
1. GENERAL INFORMATION
1.1 HOW TO USE THIS SECTION
1.2 TRANSMISSION GENERAL DESCRIPTION
1.3 TRANSMISSION DEFINITIONS AND ABBREVIATIONS
THROTTLE POSITIONS
SHIFT CONDITIONS
NOISE CONDITIONS
ABBREVIATIONS
2. DIAGNOSIS
2.1 BASIC KNOWLEDGE REQUIRED
2.2 FUNCTIONAL TEST PROCEDURE
2.3 TRANSMISSION FLUID CHECKING PROCEDURE
2.4 LINE PRESSURE CHECK
PRELIMINARY INFORMATION
PROCEDURE
2.5 ROAD TEST PROCEDURE
PRELIMINARY INFORMATION
ELECTRICAL FUNCTION CHECK
UPSHIFT CONTROL AND TORQUE CONVERTER CLUTCH (TCC) APPLY
PART THROTTLE DETENT DOWNSHIFT
FULL THROTTLE DETENT DOWNSHIFT
MANUAL DOWNSHIFTS
COASTING DOWNSHIFTS
MANUAL GEAR RANGE SELECTION
2.6 TORQUE CONVERTER DIAGNOSIS PROCEDURE
TORQUE CONVERTER STATOR
NOISE
TORQUE CONVERTER CLUTCH SHUDDER
TORQUE CONVERTER VIBRATION TEST
2.7 NOISE AND VIBRATION ANALYSIS
2.8 CLUTCH PLATE DIAGNOSIS
COMPOSITION PLATES
STEEL PLATES
2.9 ENGINE COOLANT IN TRANSMISSION
2.10 FLUID LEAK DIAGNOSIS
2.11 SHIFT SOLENOID LEAK TEST
2.12 SYMPTOM DIAGNOSIS
SYMPTOM DIAGNOSIS TABLE
OIL PRESSURE HIGH OR LOW
HARSH SHIFTS
INACCURATE SHIFT POINTS
FIRST GEAR RANGE ONLY – NO UPSHIFT
SLIPS IN FIRST GEAR
SLIPPING OR ROUGH 1 – 2 SHIFT
NO 2–3 SHIFT OR SHIFT SLIPS, ROUGH OR HUNTING
2ND/3RD GEAR ONLY OR 1ST/4TH GEARS ONLY
THIRD GEAR ONLY
3-2 FLARE OR TIE-UP
NO 3-4 SHIFT, SLIPS OR ROUGH 3-4 SHIFT
NO REVERSE OR SLIPS IN REVERSE
NO PART THROTTLE OR DELAYED DOWNSHIFTS
HARSH GARAGE SHIFT
NO OVERRUN BRAKING - MANUAL 3-2-1
NO TORQUE CONVERTER CLUTCH APPLY
TORQUE CONVERTER CLUTCH SHUDDER
NO TORQUE CONVERTER CLUTCH RELEASE
DRIVES IN NEUTRAL
2ND GEAR START
NO PARK
OIL OUT THE VENT
VIBRATION IN REVERSE AND WHINING NOISE IN PARK
RATCHETING NOISE
NO DRIVE IN ALL RANGES
NO DRIVE IN DRIVE RANGE
FRONT OIL LEAK
DELAY IN DRIVE AND REVERSE
2.13 RANGE REFERENCE CHART
2.14 1999 MY 4L60-E SHIFT SPEED CHART
3. SPECIAL TOOLS
