The Chevrolet Silverado Medium Duty line – which includes 4500HD, 5500HD, and 6500HD models – was introduced for the 2019 model year after being developed in collaboration with Navistar. For the 2021 model year, the Silverado Medium Duty gets a few minor changes and updates.
Here’s exactly what’s new and different about the 2021 Chevy Silverado Medium Duty.
The Chevrolet Medium Duty truck becomes available in Regular Cab and Crew Cab configurations with various wheelbases and GVWRs.
The 4500HD, 5500HD, and 6500HD are all available as either Work Truck (1WT) or LT (1LT) models.
- 4×4 Crew Cab Dual Rear Wheel (CK56043)
- 4×4 Regular Cab Dual Rear Wheel (CK56403)
- 2WD Regular Cab Dual Rear Wheel (CC56403)
- 2WD Crew Cab Dual Rear Wheel (CC56043)
- Silverado 4500 HD: 14,001-16,500 lbs. GVWR
- Silverado 5500 HD: 17,000-19,500 lbs. GVWR
- Silverado 6500 HD: 21,000-23,500 lbs. GVWR
For the 2021 model year, the Silverado Medium Duty sees the addition of five exterior colors:
- Smokey Quartz Metallic (not pictured)
- Mosaic Black Metallic
- Northsky Blue Metallic
- Shadow Gray Metallic
- Satin Steel Metallic
A rear window delete option has also been introduced, and is available for all models. This option also requires either the Shuttle Bus Package, the School Bus (Non-Conforming) Package or the Emergency Service Package. The Emergency Service Package includes dual alternators, a backup alarm and end-of-cab wiring provisions.
On the inside, the 2021 Chevy Silverado Medium Duty sees the addition of an auxiliary A/C compressor for HVAC provisions. This available option includes an additional, bare A/C compressor mounted to the engine accessory drive. The upfitter is responsible for AC hose connections, plumbing and control circuit, which are not included.
Most of the changes and updates for the 2021 Chevy Silverado Medium Duty are mechanical. Off the bat, the truck sees the addition of the following features, which are standard:
- StabiliTrak as standard on all models
- Neutral-at-Stop, which is standard on all models standard
- The functionality involves the automatic transmission shifting to neutral when the service brake is depressed while the vehicle is at a complete stop, and remaining in neutral until the service brake is released
- An open, non-locking rear as the standard differential
Additionally, the exhaust brake is now standard. For the 2020 model year, this feature was only available for models equipped with the Emergency Service Package. Meanwhile, the upfitter switch kit is also now standard. For the 2020 model year, this feature was only available for models equipped with the Emergency Service Package, which also included:
- Dual alternators
- Upfitter box switchbank
- Exhaust brake
- Backup alarm
- End of cab wiring provisions
- Required DPF, diesel particulate filter, manual regeneration and Emergency Service transmission, (MBY), (MH1), (MHV) or (MG0)
- Was not available with electronic speed sensor set to 55 MPH or with (G80) heavy-duty locking rear differential
The limited-slip Dana Spicer axle is now an available option. For the 2020 model year, this was the standard rear differential.
Lastly, the Medium Duty pickups also see the addition of FuelSense 2.0 transmission shift control calibration, which is available on all models.
The 2021 Chevy Silverado Medium Duty continues to be offered with a single engine and transmission choice, as follows:
|Engine||Fuel||Aspiration||Transmission||Horsepower @ RPM||Torque @ RPM||Available Gear Ratios|
|6.6L L5D V8 Duramax||Diesel||Turbocharged||6-Speed Automatic||350 @ 2700||700 @ 1600||4.10, 4.30, 4.56, 4.88|
2021 Chevy Silverado Medium Duty Availability
The 2021 Silverado Medium Duty trucks are assembled at the Navistar plant in Springfield, Ohio.
The plant has been producing 2021 models since the tail end of 2020. Looking ahead, we expect the Silverado Medium Duty pickup trucks to remain in production for the foreseeable future, with necessary updates and enhancements along the way, including the expected gasoline engine and rumored dock height model. The Chevrolet Express and GMC Savana are great examples of this strategy, as they have remained more or less the same for the past decade, if not longer.
To clarify, the Silverado 4500, 5500, and 6500 do not ride on the T1 platform or K2 platform, which are utilized by third and fourth-generation Silverado 1500, 2500, and 3500 models, respectively. Instead, Chevrolet Silverado MD pickup trucks utilize a unique platform that was jointly developed by Navistar and General Motors, while using a cab from the K2-generation Silverado HD. Note that the model does ship with a bed/box from the factory.
Beauty and brawn.
Heated seats, steering wheels, and park assist affected.