Recall 19V645 covers 3,456,719 2014-2018 Chevrolet, GMC, and Cadillac vehicles with reduced brake assist. Repair is free at any franchised Chevrolet dealer.
Chevrolet is recalling 3,456,719 2014-2018 Suburban, Silverado 1500, Tahoe, Sierra 1500, Yukon, and Escalade vehicles under recall 19V645 because the vacuum pump can lose output over time. As brake assist drops, stopping takes more effort and distance, increasing crash risk; the dealer repair is free.
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What's wrong?
The vacuum brake assist pump helps the 2014-2018 Suburban, Silverado 1500, Sierra 1500, Yukon, Tahoe, and Escalade reduce the force needed at the brake pedal. It creates vacuum pressure for the power brake assist system, so normal braking feels controlled instead of heavy. A secondary hydraulic brake assist system is also present if vacuum assist drops.
On affected vehicles, engine oil lubricates the vacuum pump through a small filter screen. Debris such as oil sludge can build up on that screen and restrict oil flow into the pump. As lubrication and pump output decline, the pump produces less vacuum, and the hydraulic assist calibration provides limited help at lower speeds.
The driver can feel vibration in the brake pedal or a change in how much pressure it takes to press the pedal. People in the vehicle can hear a ticking noise from the engine compartment or notice the secondary assist system activate. A "Service Brake Assist" message appears in the Driver Information Center within 2 to 5 minutes after vacuum drops below 10 kPA.
Who's affected?
Covers 6 truck and SUV nameplates from 2014-2018, all tied to the hydraulic brake system.
| 2017 Chevrolet Suburban | hydraulic brake system |
|---|---|
| 2015 Chevrolet Suburban | hydraulic brake system |
| 2016 Chevrolet Suburban | hydraulic brake system |
| 2018 Chevrolet Suburban | hydraulic brake system |
| 2014 Chevrolet Silverado 1500 | hydraulic brake system |
| 2014 GMC Sierra 1500 | hydraulic brake system |
| 2015 GMC Yukon | hydraulic brake system |
| 2015 Chevrolet Tahoe | hydraulic brake system |
| 2015 Cadillac Escalade | hydraulic brake system |
| 2015 GMC Sierra 1500 | hydraulic brake system |
| 2016 Cadillac Escalade | hydraulic brake system |
| 2016 GMC Yukon | hydraulic brake system |
| 2016 Chevrolet Tahoe | hydraulic brake system |
| 2016 GMC Sierra 1500 | hydraulic brake system |
| 2015 Chevrolet Silverado 1500 | hydraulic brake system |
| 2016 Chevrolet Silverado 1500 | hydraulic brake system |
| 2017 Chevrolet Silverado 1500 | hydraulic brake system |
| 2017 Cadillac Escalade | hydraulic brake system |
| 2017 Chevrolet Tahoe | hydraulic brake system |
| 2017 GMC Sierra 1500 | hydraulic brake system |
| 2017 GMC Yukon | hydraulic brake system |
| 2018 Chevrolet Tahoe | hydraulic brake system |
| 2018 GMC Yukon | hydraulic brake system |
| 2018 Chevrolet Silverado 1500 | hydraulic brake system |
| 2018 GMC Sierra 1500 | hydraulic brake system |
| Units affected | 3,456,719 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific vehicle.
What's the safety risk?
A drop in vacuum reduces brake assist. That means harder pedal effort, longer stopping distance, and increased crash risk. Treat pedal vibration, a ticking noise from the engine area, or a Service Brake Assist message as a reason to slow down and schedule the recall repair soon. Repair is free at any franchised Chevrolet dealer.
What should I do?
- Check your VIN to confirm your 2014-2018 Chevrolet vehicle is included, including Suburban, Silverado 1500, Sierra 1500, Yukon, Tahoe, or Escalade.
- Contact a franchised Chevrolet dealer to schedule the free Electronic Brake Control Module reprogramming that addresses reduced brake assist from the vacuum-pump issue.
- Reference recall number 19V645 and GM recall N192268490 when you call the dealer.
- Bring the recall notice if Chevrolet sent one, along with any brake-assist repair paperwork you already have.
- Drive cautiously until the repair is complete. Leave extra stopping distance and avoid hard braking when traffic allows.
What happens at the repair
At the dealer, a Chevrolet technician reprograms the Electronic Brake Control Module with updated software. The update changes the brake-control calibration covered by recall 19V645, and parts and labor are free under the recall. The recall repair is available now through the dealer service department. GM is not offering reimbursement for this campaign because this software remedy was not available before the recall.
| Reimbursement | No separate reimbursement |
|---|
Timeline
| September 6, 2019 | NHTSA published the recall |
|---|---|
| September 6, 2019 | Dealer notification began |
| September 6, 2019 | Dealer notification ended |
| September 27, 2019 | Interim owner notification (was planned for this date) |
| October 8, 2019 | Owner notification mailed |
Frequently asked questions
What is recall 19V645?
Recall 19V645 covers 3,456,719 2014-2018 Chevrolet Suburban, Silverado 1500, Sierra 1500, Yukon, Tahoe, and Escalade vehicles with a vacuum pump issue that reduces brake assist over time. Chevrolet dealers will reprogram the Electronic Brake Control Module for free.
What should I do if my 2014-2018 Chevrolet Suburban, Silverado 1500, Sierra 1500, Yukon, Tahoe, or Escalade is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 19V645. If it is, contact a franchised Chevrolet dealer to schedule the Electronic Brake Control Module reprogramming. Reference GM recall number N192268490 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and GM's remedy says dealers will reprogram the Electronic Brake Control Module free of charge. Parts and labor are covered at a franchised Chevrolet dealer.
What is the safety risk?
The brake assist can decrease as vacuum drops, which raises braking effort and extends the distance needed to stop. That increases crash risk. If your VIN is included, schedule the free dealer repair and ask the service desk what to do if braking feels harder than normal.
What if I bought this Chevrolet vehicle used?
The free recall repair still applies. Recall coverage follows the vehicle, not the first owner. Check your VIN to confirm whether your specific Suburban, Silverado 1500, Sierra 1500, Yukon, Tahoe, or Escalade is included, then call a franchised Chevrolet dealer with recall number 19V645.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/19V645000 |
|---|---|
| Chevrolet customer service | 1-800-630-2438 |
| NHTSA recall # | 19V645 |
| NHTSA recall # (full) | 19V645000 |
Source documents
-
Download Misc. Document (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →