Mack CV/GU Truck Tilt, Trailer & Signal Handles

Frequently Asked Questions About Mack CV/GU Truck Tilt, Trailer & Signal Handles

What is the difference between the tilt handle, trailer handle, and signal handle?

On the Mack CV/GU steering column, each handle controls a different function. The tilt handle adjusts the angle of the steering wheel column, the trailer handle operates the trailer hand brake (also called a trolley valve), and the signal handle is the lever used to activate your turn signals. While they may look similar in shape and material, they are not interchangeable because each one connects to a different internal mechanism.

Will these handles fit my specific Mack CV or GU model year?

Mack CV and GU trucks were produced over a long span of years, and steering column hardware can vary between production runs. Before ordering, check the handle length, mounting style, and any part number references against your truck's existing component. If you are unsure, comparing the old handle side by side with the replacement or checking with our parts team can help confirm proper fit.

Why does my handle feel loose, stick, or fail to return to its original position?

Over time, the plastic or metal components inside these handles can wear from repeated use, exposure to temperature changes, or road vibration. A loose or sticking handle is often a sign that the internal detent, spring, or pivot point has worn down rather than an issue with the handle itself. Replacing the handle typically resolves this, but it's worth inspecting the mounting bracket and linkage as well to rule out other causes.

Are these handles made of metal, plastic, or a combination of both?

Most tilt, trailer, and signal handles for the Mack CV/GU use a metal core or shaft for strength combined with a molded plastic or rubberized grip for comfort and durability. Material composition can vary by specific handle and manufacturer, so check the product description for details on construction before purchasing.

How difficult is it to install a replacement handle myself?

Installation difficulty depends on which handle you're replacing. Signal and tilt handles are generally straightforward, often requiring removal of a retaining screw, clip, or set pin before the old handle slides off and the new one slides on. The trailer handle may involve a bit more attention since it connects to the trolley valve linkage. If you're not comfortable with basic hand tools or steering column disassembly, having a qualified technician handle the swap is a safer bet.