1000/M74 4WD/AWD Remanufactured Automatic Transmission T281233 | Chevrolet Silverado HD / GMC Sierra HD 2011-2012

Description

Remanufactured 1000/M74 4WD/AWD Remanufactured Automatic Transmission T281233 | 2011–2012 Chevrolet Silverado HD / GMC Sierra HD (6.6L)

Looking for a reliable replacement transmission for your Chevrolet Silverado HD or GMC Sierra HD? The Powertrain Company remanufactured 1000/M74 automatic transmission is expertly remanufactured to meet and exceed original equipment (OE) performance standards, providing smooth shifting, long-lasting durability, and dependable performance.

This heavy-duty 4WD / AWD automatic transmission is engineered for GM HD truck applications, offering exceptional strength, durability, and towing capability. Built for demanding workloads, towing, hauling, and commercial use, it delivers consistent performance under high-stress conditions. Each unit is rebuilt with premium OE-quality parts, updated components where applicable, and undergoes rigorous quality testing to restore factory-level performance and efficiency.

🔧 Why Choose a Powertrain Company Remanufactured 1000/M74 Transmission?

Our remanufactured 1000/M74 transmissions undergo a complete remanufacturing process to deliver like-new performance you can trust:

• Complete disassembly, cleaning, and inspection of every transmission component
• Precision machining to restore exact OEM factory tolerances
• High-quality clutches, seals, bushings, and gaskets installed for reliability
• Updated components to fix common factory issues and extend transmission life
• Pressure and hydraulic testing for guaranteed dependability
• SIM tested for verified shift performance before shipping

With a Powertrain Company 1000/M74 transmission, you get the confidence of a fully remanufactured, OE-quality unit built to keep your truck performing at its best under any workload.

👉 Order your remanufactured 1000/M74 transmission today and restore your vehicle’s performance and reliability.

✅ Vehicle Compatibility

The T281233 remanufactured 1000/M74 transmission fits the following vehicles with a 6.6L engine:

Chevrolet Silverado

• 2011 Chevrolet Silverado 2500 HD
• 2012 Chevrolet Silverado 2500 HD
• 2011 Chevrolet Silverado 3500 HD
• 2012 Chevrolet Silverado 3500 HD

GMC Sierra 

• 2011 GMC Sierra 2500 HD
• 2012 GMC Sierra 2500 HD
• 2011 GMC Sierra 3500 HD
• 2012 GMC Sierra 3500 HD