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.
2018 Chevrolet Corvette Z51, 2D Convertible, Automatic TransFACTORY OEM SERVICE PROCEDURE
Automatic Transmission - 8L90 (M5U) - Specifications
- Specifications
- Temperature Versus Resistance
- Fastener Specifications (On Vehicle)
- Fastener Specifications (Off Vehicle)
- Transmission General Specifications
- Adhesives, Fluids, Lubricants, and Sealers
- Approximate Fluid Capacities
- Clutch Backing Plate Retaining Ring Specifications
- 1-3-5-6-7 Clutch Thrust Bearing Washer Specifications
- Range Reference
- Shift Solenoid Valve State and Gear Ratio
- Transmission Internal Mode Switch Voltage
- Transmission Parts Kit Specifications
- Clutch Plate Package except LT4
- Clutch Plate Package LT4
- 1-3-5-6-7 Clutch Plate Assembly except LT4
- 1-3-5-6-7 Clutch Plate Assembly LT4
- 4-5-6-7-8 Clutch Plate Assembly
- 2-3-4-6-8 Clutch Plate Assembly
- 1-2-7-8 Reverse Clutch Plate Assembly
- 1-2-3-4-5 Reverse Clutch Plate Assembly
- Automatic Transmission Seal Kit
- Automatic Transmission Seal Kit (1 of 2)
- Automatic Transmission Seal Kit (2 of 2)
- Automatic Transmission Fluid Pump Seal Kit
- Automatic Transmission Fluid Pump Kit
- Automatic Transmission Retaining Ring Package
- Accumulator Piston Signal
- Drive & Driven Sprocket (W/LINK) Package
- Control Valve (w/Body & Valve)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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