Fitment Guarantee - We call to verify every order so you get the exact powertrain product you need!

Allison 1000 M74 Remanufactured 6-Speed Automatic Transmission for Chevrolet And GMC

Original price was: $4,999.00.Current price is: $4,549.00.

✔ In-Stock

  • 6-Speed Automatic Transmission Manufactured by Allison; 1000 M74 Transmission Family
  • Fully Remanufactured to Meet or Exceed OE Specifications
  • 7 Year, Million Mile Warranty and Core Fee Waiver Available

Questions? Call Toll-Free: 888-842-0023

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Be sure to check application notes and verify VIN code/cast no. before ordering.

SKU: 10046T Categories: ,

Fitment Guarantee - We call to verify every order so you get the exact powertrain product you need!


Every remanufactured transmission we sell is backed by a Million Mile warranty up to 7 years, the best in the industry. The reason we can offer this warranty? Every transmission undergoes the same rigorous remanufacturing process:

  1. Teardown and Triple Clean – Every transmission is disassembled, inspected, and cleaned three times. We also chase all threads and install all new bushings during this process.
  2. Valve Body Rebuild and Test – Our most experienced team members rebuild and inspect each valve body before testing it using our C.A.R.S. testing system, which simulates real-world use and validates the valve body.
  3. New O-Rings, Gaskets, and Seals – Once the valve body is tested, the transmission is reassembled with all new o-rings, gaskets, and seals.
  4. Dyno Testing – Our custom dyno testing machines spin and load test every transmission to verify it’s ready for the road.

When you buy a remanufactured transmission from Powertrain Products, you’re buying a transmission that meets or exceeds OEM specifications. And we back that claim up with our available 7 Year, 1 Million Mile Warranty.

Prop 65 WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Additional information

Weight372 lbs
Dimensions48 × 26 × 25 in
Transmission Family

1000 M74

Transmission Speeds


Cooler Included


Cooler Replacement Required


Radiator Included


Radiator Replacement Required


Transmission Fluid Type




Transmission Fluid (Quarts)


Tail Housing


Pan Bolts


Product Type


Cooler Lines

7/8 Inch – Big

Sensor Type

With Speed Sensor on the Bell Housing

Shift Type

1-3/8 Inch Manual Shift Shaft Size