Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSATURN2000LW1 AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE OVERHAUL & TESTING - 4T40-E & 4T45-E
2000 Saturn LW1 Automatic
Automatic Transaxle Overhaul & Testing - 4T40-E & 4T45-E
2000 Saturn LW1 AutomaticSECTION Automatic Transaxle Overhaul & Testing - 4T40-E & 4T45-E
- Application
- Identification
- Description & Operation
- Lubrication
- On-Vehicle Service
- Trouble Shooting
- Notes
- Preliminary Inspection
- Symptom Diagnosis
- Drives In Neutral
- Engine Stall
- High Or Low Line Pressure
- Inaccurate/Inconsistent Shift Points
- Loss Of Drive
- Loss Of Power
- No Engine Braking In All Manual Ranges
- No Engine Braking In Manual 2nd
- No Engine Braking In Manual 1st
- No Gear Selection
- No Park
- No Reverse Or Slips In Reverse
- Intermittent Loss Of TCC
- No TCC Release
- No 1st Gear Or Slips In 1st Gear
- No 2nd Gear Or Slips In 2nd Gear
- No 3rd Gear Or Slips In 3rd Gear
- No 4th Gear Or Slips In 4th Gear
- Oil Out Of Vent Or Foaming
- Shift Indicator Displays Incorrect Selection
- TCC Apply With Cold Engine
- 1st & 2nd Gears Only
- 1st & 4th Gears Only
- 2nd Gear Only
- 2nd & 3rd Gears Only
- 3rd & 4th Gears Only
- Clutch & Band Applications
- Performance Tests
- Removal & Installation
- Transaxle Disassembly
- Component Disassembly, Reassembly & Transaxle Reassembly
- Notes
- Transaxle Case
- Differential & Final Drive Assembly
- Output Shaft
- Forward Clutch Support & Low Roller Clutch Assembly
- Forward Clutch Assembly
- Input Internal Gear & Forward Clutch Hub Assembly
- Reaction Internal Gear & Input Carrier Assembly
- Coast & Direct Clutch, & Reaction Carrier Assembly
- Reverse Input Clutch & 2ND Roller Clutch Assembly
- Intermediate-4TH Band
- 2ND Clutch Plates
- Drive Sprocket Support Assembly
- Input Speed Sensor & Wiring Harness
- Drive & Driven Sprockets & Drive Link Assembly
- Channel Plate Assembly
- Check Balls, Spacer Plate & Gaskets
- Control Valve Assembly
- Oil Pump Assembly
- Transaxle Side Cover & Gaskets
- Left & Right Axle Seals
- Output Shaft Sleeve Assembly
- Stub Shaft & Sleeve Assembly
- Vehicle Speed Sensor
- Intermediate-4TH & Low/Reverse Servos
- Oil Feed Tubes
- Oil Filter Assembly & Seal, & Oil Level Control Valve
- Oil Pan & Gasket
- Torque Converter Assembly
- Torque Specifications
- Transaxle Specifications
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.