What is a max trailering package?

A Max Trailering Package is General Motors’ official towing‑oriented option that increases a truck or SUV’s maximum towing capacity by bundling hardware and electronics designed for heavy loads.

This article explains what the package is, what it typically includes, which GM models offer it, how to verify eligibility, and what it means for towing performance and ownership today.

Definition and purpose

The Max Trailering Package is a factory‑installed option from General Motors designed to maximize a vehicle’s ability to tow heavy loads. It is not a single feature, but a bundled set of upgrades that work together with the vehicle’s powertrain, cooling system, suspension, and trailer‑related electronics to improve stability, braking, and overall capacity during towing.

What it includes

The following components are commonly bundled under the Max Trailering Package in various GM configurations. Exact contents can vary by model year and trim, so always check the window sticker for specifics.

• Heavy‑duty cooling system, including an upgraded radiator and transmission cooler (and sometimes an engine oil cooler)


• Integrated trailer brake controller for enhanced trailer braking without a separate unit


• Rear‑axle gearing optimized for towing performance (higher numeric ratio where applicable)


• Revised suspension components or springs to improve stability under load


• Tuned powertrain calibration and Tow/Haul settings designed for sustained towing


• Enhanced electrical systems related to towing (as applicable)

These components help maintain engine and transmission temperatures, improve braking response, and increase stability when pulling trailers or other heavy loads. They also support better performance on long trips under demanding towing conditions.

Which vehicles offer it and how to verify

The package has historically been offered on select General Motors light‑duty trucks and sport utility vehicles. Availability is year‑ and trim‑dependent, so it may appear on some Silverado 1500 and Sierra 1500 configurations, while not on others. Always verify via the window sticker or build sheet for a given model year.

• Chevrolet Silverado 1500 (selected trims and years)


• GMC Sierra 1500 (selected trims and years)

To confirm for a specific vehicle, check the order code on the window sticker, consult the original build sheet, or ask a dealer to confirm the presence of the Max Trailering Package for that model year and configuration. This ensures you know exactly which components are included and the resulting towing rating.

Impact on towing capacity and ownership

Choosing the Max Trailering Package typically affects the vehicle’s maximum tow rating for compatible configurations. It can also add weight due to extra hardware, which may influence payload ratings. In addition, the package often enables an integrated trailer brake controller, which simplifies braking control when towing heavier trailers and can improve overall towing safety and confidence.

Summary

The Max Trailering Package is GM’s towing‑focused upgrade that combines upgraded cooling, drivetrain tuning, reinforced suspension, and an integrated trailer brake controller to help select trucks and SUVs tow heavier loads more safely and reliably. Availability varies by model year and trim, so always verify exact contents and towing ratings on the vehicle you’re considering.

How much does the Max trailering package cost?

The Max Trailering Package will cost you an additional $1,125 but provides an enormous amount of added driver capability and safety.

What is the difference between a tow package and a max tow package?

So what's the difference? Trailer Tow Package – This includes the essentials: a hitch receiver, wiring harness, and usually a transmission oil cooler. Max Trailer Tow Package – Adds upgraded rear axle ratios, a heavy-duty radiator, integrated trailer brake controller, and sometimes enhanced suspension.

Can I tow a 12000 lb trailer without a CDL?

You will need a CDL if the combination of your tow vehicle and trailer has a combined weight exceeding 26,00026 comma 00026,000 pounds (GCWR) AND the trailer's own weight rating is over 10,00010 comma 00010,000 pounds. However, if you are not operating for commercial purposes, state laws vary, and some states may allow you to pull a trailer over 10,00010 comma 00010,000 pounds with a regular license as long as the combined weight is under 26,00026 comma 00026,000 pounds. 
When you need a CDL

• Your tow vehicle's GCWR is over 26,001 lbs, AND your trailer's GVWR is over 10,000 lbs. 
• If your vehicle doesn't have an assigned GCWR, a CDL is required if the combined weight of the tow vehicle and trailer exceeds 26,000 lbs and the trailer's GVWR is over 10,000 lbs. 
• When operating commercially, you need a CDL if the trailer's GVWR is over 10,000 lbs. 

When you may not need a CDL

• When the combined weight of the tow vehicle and trailer is less than 26,000 lbs . For example, a 12,00012 comma 00012,000 lb truck and a 14,00014 comma 00014,000 lb trailer can be towed without a CDL as long as it's not for commercial use. 
• When pulling a trailer with a GVWR under 10,000 lbs, even if the tow vehicle's GVWR is over 16,000 lbs. 

Important considerations

• Commercial vs. personal use: The need for a CDL depends heavily on whether you are using the vehicle for commercial purposes or for personal reasons. 
• State laws: Individual states can have their own specific rules regarding CDL requirements, so it is crucial to check your local DMV's regulations. California, for instance, has specific rules for residents operating within the state. 
• Vehicle ratings: Always check the manufacturer's labels for the Gross Combination Weight Rating (GCWR) on the tow vehicle and the Gross Vehicle Weight Rating (GVWR) on the trailer. 

What does the Max trailering package include?

A Max Trailering Package typically includes a combination of suspension, cooling, and powertrain upgrades to increase a truck's towing capacity and stability. Key components often found in this package are an integrated trailer brake controller, heavier-duty rear springs, an enhanced cooling radiator, and an automatic locking rear differential. 
Performance and capability

• Increased towing capacity: The package raises the maximum towing and gross combined weight ratings (GCWR) to handle heavier loads. 
• Integrated trailer brake controller: This system helps provide the correct amount of brake force to your trailer's electric brakes, improving safety. 
• Revised axle ratio: A different rear axle ratio can improve towing performance. 
• Automatic locking rear differential: This improves traction and stability, especially on challenging terrain. 

Cooling and durability 

• Enhanced cooling radiator: An upgraded radiator efficiently dissipates the extra heat generated by heavy towing, preventing overheating. 
• 220-amp alternator: This provides more power for the electrical system under the stress of towing. 

Ride and handling

• Handling/trailering suspension package: This includes a specialized suspension system for a smoother, more controlled ride while towing. 
• Heavier-duty rear springs and revised shock tuning: These components beef up the rear suspension to better support and control heavy loads. 

Convenience and information

• Driver Information Center: Displays real-time trailer statistics to help you monitor your haul.