Dorman Vacuum Pump replacement for 2015–2019 GM trucks and SUVs — direct-fit, OE-style mounting

The Dorman 904-861 Vacuum Pump is a direct-fit replacement engineered to restore vacuum-operated systems on compatible 2015–2019 GM trucks and SUVs.

This replacement vacuum pump is built to match the original equipment’s fit and function while using durable materials and quality testing to return reliable vacuum supply to components that depend on engine vacuum. It’s produced by Dorman, a long-standing aftermarket parts provider, and is intended for specific Cadillac, Chevrolet, and GMC models from 2015 through 2019. Before you buy, confirm vehicle fitment with the garage tool and the Confirmed Fit indicator on the product page.

Which vehicles does this pump fit and how should I verify compatibility?

The Dorman 904-861 is compatible with a range of GM full-size trucks and SUVs from 2015–2019, including Cadillac Escalade, Chevrolet Silverado/Tahoe/Suburban, and GMC Sierra/Yukon families. Since model trims and equipment vary, always use the online garage tool and check the Confirmed Fit bar for your exact VIN or trim to ensure correct match.

• Cadillac Escalade and Escalade ESV: 2015–2019
• Chevrolet Silverado 1500 and Silverado 1500 LD: 2015–2019 (LD specific to 2019)
• Chevrolet Tahoe, Suburban, Cheyenne: 2015–2019
• GMC Sierra 1500/limited and Yukon/Yukon XL: 2015–2019

How does this replacement match the original pump’s performance?

Designed to match the original equipment’s mounting points and vacuum port layout, this Dorman unit aims to restore the same vacuum flow and mechanical fit. Dorman reports try-on testing to confirm the pump mates correctly to factory brackets and hoses, minimizing installation adjustments.

• OE-style mounting and port alignment for direct replacement
• Durable construction to withstand engine-bay exposure
• Tested for fit to reduce installation time and unexpected modifications

What are the build features and durability expectations?

The pump is constructed from quality materials designed for long service life under typical operating conditions. While no aftermarket part can promise engine-original longevity, this part’s materials and testing aim to provide dependable service for vacuum-operated accessories.

• Corrosion-resistant housing and hardware where applicable
• Seals and interfaces designed to maintain vacuum integrity
• Manufactured and inspected by a company with decades in aftermarket parts

How do I install the Dorman 904-861 and what should I prepare?

Installation is generally straightforward for a technician familiar with GM engine compartments: remove the old pump, transfer any reusable hardware, and secure the replacement to factory mounting points. Have basic hand tools, replacement gaskets or O-rings if required, and follow torque specs from a service manual to avoid leaks.

• Tools: ratchet, socket set, torque wrench, hose pliers
• Inspect vacuum hoses and electrical connectors; replace damaged parts
• Confirm fit with garage tool and consult vehicle service manual for torque values

Who is this for? The Dorman 904-861 Vacuum Pump is aimed at owners and technicians working on compatible 2015–2019 GM full-size trucks and SUVs who need a cost-effective, tested replacement that mirrors factory fit and function. It suits DIY mechanics with moderate experience and professional shops replacing a failed or leaking vacuum pump, provided correct fitment is verified before purchase.