Dorman Vacuum Pump replacement for 2015–2019 GM trucks & SUVs — direct-fit, durable housing

The Dorman 904-861 Vacuum Pump is a direct-fit replacement pump designed to restore the operation of vacuum-driven systems on compatible 2015–2019 GM trucks and SUVs.

If your vehicle’s vacuum-operated functions—such as brake boosters, HVAC actuators, or other engine vacuum accessories—are underperforming, a failing vacuum pump could be the cause. Dorman engineered this replacement to match the form, fit and function of the original equipment so you can swap it in without modifying mounting points or hoses. The pump is constructed from durable materials and has been try-on tested for reliable fitment across a range of Cadillac, Chevrolet and GMC models from 2015 through 2019. Always confirm fitment by entering your vehicle trim in the garage tool before purchasing.

How does this pump restore vacuum-operated systems?

The 904-861 re-establishes consistent vacuum supply to components that rely on engine vacuum. By matching OEM dimensions and mounting locations, it reinstalls as a plug-and-play unit so vacuum lines and brackets reconnect without adjustment. That helps return normal operation to brake assist and other vacuum-dependent functions.

• Direct-fit replacement matching original pump mounting and ports
• Durable housing resists wear for steady vacuum delivery
• Try-on tested to reduce installation fitment issues

Which vehicles is this Dorman pump compatible with?

This pump is compatible with a range of GM full-size trucks and SUVs produced from 2015 through 2019. Models include Cadillac Escalade and Escalade ESV, Chevrolet Silverado, Tahoe and Suburban, Chevrolet Cheyenne, and multiple GMC Sierra and Yukon variants. Use the store’s garage tool to verify exact trim and year fitment before buying.

• Cadillac Escalade / Escalade ESV: 2015–2019
• Chevrolet Silverado, Tahoe, Suburban, Cheyenne: selected 2015–2019 years
• GMC Sierra (including 1500 and Limited) and Yukon/Yukon XL: selected 2015–2019 years

What installation and quality checks should I expect?

Installation is straightforward when the part is a confirmed fit: unbolt the old pump, disconnect vacuum and electrical connections, and install the new unit in reverse order. Dorman performs try-on testing to ensure the replacement lines up with factory mounting points and ports. If the garage tool shows an information icon, review the fitment notes before proceeding.

• Simple bolt-on installation for confirmed-fit vehicles
• Pre-install try-on testing to ensure correct alignment
• Follow vehicle-specific service instructions for torque and hose routing

How durable and reliable is this replacement pump?

Built from quality materials, the pump is designed for long service life under typical vehicle operating conditions. While individual lifespan depends on usage and environment, Dorman’s century-long experience in aftermarket parts and the product’s quality testing aim to minimize early failures and fitment problems.

• Constructed with durable components to resist wear and fatigue
• Quality-tested to match OEM fit and reduce rework
• Backed by Dorman’s long history in aftermarket replacement parts

Who is this for: The Dorman 904-861 Vacuum Pump is intended for owners and technicians working on 2015–2019 Cadillac, Chevrolet and GMC full-size trucks and SUVs who need an OEM-like replacement. It suits DIY mechanics, professional mechanics, and fleet managers looking to restore vacuum-dependent functions without modifying factory systems—provided the garage tool confirms fitment for the vehicle’s exact year and trim.