6L80E Automatic Transmission

6L80E Automatic Transmission

The GM 6L80E 6-speed automatic transmission is designed for modern GM cars, trucks and SUVs requiring electronic transmission control and overdrive performance. It is commonly paired with GM LS and other V8 powerplants.

The 6L80E features six forward gears, electronic controls and a torque converter with lockup, making it suitable for both daily-driving and performance applications.

Key Specifications

• Transmission: GM 6L80E
• Type: 6-Speed Automatic
• Control: Fully electronic
• Forward Speeds: 6
• Reverse: 1
• Overdrive: Yes
• Drive: RWD and 4WD applications
• Application: Cars, trucks, SUVs and custom swaps
• Controller: Electronic control system required

Common Applications

Depending on the exact transmission version:

• Chevrolet Silverado
• Chevrolet Tahoe
• Chevrolet Suburban
• Chevrolet Camaro
• Chevrolet Corvette
• GMC Sierra
• GMC Yukon
• Cadillac Escalade
• Cadillac CTS
• Other compatible GM applications

Important: A 6L80E from one vehicle is not automatically interchangeable with every other 6L80E. Case configuration, output shaft, transfer-case setup, electronics and calibration can differ.

Swap Requirements

A 6L80E installation may require:

• Compatible ECU/TCM
• Wiring harness
• Torque converter
• Transmission mount/crossmember
• Driveshaft modification
• Transmission cooler and lines
• Correct flexplate and hardware
• Electronic calibration/programming