GM 6L50 Transmission Specs & Ratios

General Motor's Hydra-Matic 6L50 six speed automatic transmission was first introduced for the 2006 model year as a replacement for the five speed 5L50. The transmission is found behind 2015 to present model year Chevrolet Colorado and GMC Canyon midsize pickups equipped with the 2.8L Duramax diesel. The transmission features a relatively low 4 to 1 first gear ratio and a relatively high 0.67 to 1 final overdrive ratio, resulting in favorable gear multiplication at low vehicle speeds while minimizing engine rpm at cruising speeds.

Gear Ratios

1st	2nd	3rd	4th	5th	6th	R
4.065 : 1	2.371 : 1	1.551 : 1	1.157 : 1	0.853 : 1	0.674 : 1	3.20 : 1

GM 6L50 Specs

Transmission	General Motors Hydra-Matic 6L50
Type	6 speed automatic
Predecessor	General Motors 5L50
Production Plant(s)	• GM Strasbourg Plant, Strasbourg, France • Toledo Transmission Plant, Toledo, Ohio • Silao Transmission Plant, Silao, Mexico
Model Years/Applications	• 2016 - present Chevrolet Colorado/GMC Canyon w/ 2.8L Duramax • 2006 - present model year GMC/Chevrolet, various 4 cyl & 6 cyl applications
Case Material	3 piece aluminum case
Max Input Torque	480 lb-ft
Max GVWR*	6,613 lbs
Max GCWR*	12,505 lbs
Max Shift Speed	4,400 rpm (2.8L diesel only)
Weight	Approx. 187 - 198 lbs w/ fluid
ATF Type/Spec	DEXRON VI automatic transmission fluid
Transmission Filter P/N	Filter	ACDelco 24236933
	Transmission pan gasket	ACDelco 24225800
Service Intervals	Replace transmission fluid and filter at 45,000 mile intervals if operation falls under "severe" service category**
Features	• Fully electronic sequence, 7 electric shift solenoids • Bandless, modular transmission design • Designed for longitudinally mounted engine configurations, rear and all wheel drive applications • Production code MYB • Torque converter equipped with centrifugal pendulum vibration absorber (CPVA) for transmission noise and vibration control

*Maximum validated GVWR and GCWR listed; transmission may be adequate in applications with greater ratings.
**Transmission service intervals not published under "normal" service procedures; "severe" service refers to vehicles that have been used to tow frequently, have been driven primarily in heavy city traffic during hot weather, or that have been driven primarily in hilly/mountainous terrain. Refer to owner's manual for additional service information.