How to Use Tow/Haul Mode on a Chevy Silverado 1500 (And When You Should)

Tow/Haul mode is one of the most effective — and most underused — features on the Silverado 1500. When you're pulling a trailer, hauling a heavy load, or descending a steep grade, it fundamentally changes how your truck's transmission and engine braking behave. Here's exactly how to activate it, what it does, and when you should (and shouldn't) use it.

What Does Tow/Haul Mode Actually Do?

When Tow/Haul is active, the Silverado's PCM makes several simultaneous adjustments:

• Holds gears longer: Shifts at higher RPM so the engine stays in its torque range longer instead of upshifting early and lugging under load
• Downshifts earlier: When you lift off the throttle or approach a hill, the truck downshifts proactively to use engine braking rather than letting the trailer push the truck
• Disables or delays AFM/DFM: Keeps the V8 running on all 8 cylinders during load conditions
• Tightens throttle response: More direct pedal feel for better control when maneuvering with a trailer
• Activates grade braking: On descents, the transmission actively downshifts to control speed without overheating the brakes

How to Activate Tow/Haul Mode — By Generation

2019–2026 Silverado 1500 (T1 Platform)

Look for the Traction Select System dial to the left of the steering wheel. This large rotary knob controls multiple drive modes. Turn it clockwise until you reach the trailer/tow icon (looks like a truck pulling a trailer). A trailer icon will illuminate in the instrument cluster DIC to confirm activation.

Alternative: On trucks with a column shifter, a dedicated Tow/Haul button may be located on the end of the shift stalk — push it in to toggle on/off.

2014–2018 Silverado 1500 (K2 Platform)

The Tow/Haul button is located on the end of the column shifter stalk (the lever that sticks out from the steering column). Push the button at the tip of the stalk inward — a "TOW/HAUL" message will appear in the DIC and a trailer icon lights up.

2007–2013 Silverado 1500 (GMT900)

Same as K2 — the Tow/Haul button is on the end of the column shift stalk. Press to activate; press again to deactivate. Confirmed by DIC message.

When to Use Tow/Haul Mode

Activate Tow/Haul mode any time you're:

• ✅ Towing a trailer of any size (even a light utility trailer)
• ✅ Carrying a heavy payload in the truck bed (over 500 lbs)
• ✅ Driving in mountainous or hilly terrain with or without a trailer
• ✅ Descending a long grade where you want engine braking instead of burning your brakes
• ✅ Stop-and-go traffic with a fully loaded bed or trailer

When NOT to Use Tow/Haul Mode

• ❌ Empty truck on flat highway — the higher RPM shifts waste fuel with no benefit
• ❌ Daily commuting without a load — causes unnecessary drivetrain wear over time and hurts mpg
• ❌ In combination with Eco mode — these modes conflict; Tow/Haul always takes priority

Tow/Haul + Trailer Integrated Brake Controller — Working Together

On Silverados equipped with the integrated trailer brake controller (IBC), Tow/Haul mode also sharpens the communication between truck braking and trailer brake activation. When you apply the brakes, the IBC fires the trailer's electric brakes in sync — and Tow/Haul's grade braking logic factors in that trailer brake output for smoother, more controlled deceleration.

For best results: always set the trailer brake gain before you start towing, then activate Tow/Haul. The two systems are designed to complement each other.

Does Tow/Haul Mode Help Fuel Economy While Towing?

Counterintuitively — yes, it often improves real-world towing mpg. By holding gears longer and keeping the engine in its torque band, the engine doesn't have to work as hard to maintain speed. A 5.3L Silverado towing at 65 mph in Tow/Haul typically outperforms the same truck towing without it because it avoids the constant hunt for gears that burns extra fuel.

Tow/Haul vs. Other Silverado Drive Modes

📖 Back to: The Complete Silverado 1500 How-To Guide

Related: Silverado 1500 Towing Capacity Guide | How to Set Up the Trailer Brake Controller

— GM Service Guy