NHTSA recall 20V603000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 20V603000 |
| Manufacturer's number | N202300860 |
| Manufacturer | General Motors LLC |
| Reported | 2020-10-01 |
| Owners notified | 2020-11-11 |
| Component | SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM |
| Units potentially affected | 14620 |
| Part numbers | 84110341 thru 84110346, 84309752 thru 84309755, 84110293 thru 84110320, 84110322 thru 84110333, 84110335 thru 84110339 |
| Report | Annual report 3, for 2024 quarter 4 to 2025 quarter 3 |
|---|---|
| Filed with NHTSA | 2025-10-06 |
| Vehicles in the campaign | 14620 |
| Reported remedied | 13633 (93%) |
| Reported unreachable | 28 |
| Reported removed | 3 |
These are the manufacturer's totals for the whole campaign at the end of 2025 quarter 3, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
General Motors LLC (GM) is recalling certain 2018 Cadillac Escalade, Chevrolet Silverado 1500 and Tahoe, GMC Sierra 1500 and Yukon vehicles equipped with either a 5.3L or 6.2L V8 engine. The output of the mechanical vacuum pump can decrease over time, decreasing the amount of vacuum/power brake assist.
What can happen
A decrease in brake assist can increase the brake pedal effort and distance required to stop the vehicle, increasing the risk of a crash.
The remedy
GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began November 11, 2020. Owners may contact GM customer service at 1-866-522-9559, Cadillac customer service at 1-800-458-8006 or Chevrolet customer service at 1-800-630-2438. GM's number for this recall is N202300860.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
| 2018 CADILLAC ESCALADE | |
|---|---|
| 2018 CHEVROLET SILVERADO 1500 | Listed as a series or trim of this model. |
| 2018 CHEVROLET TAHOE | |
| 2018 GMC SIERRA 1500 | Listed as a series or trim of this model. |
| 2018 GMC YUKON |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.
Bulletins for the same vehicles and component
| 25-NA-065 | 2025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis. |
|---|---|
| 21-NA-043 | 2025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. |
| 21-NA-043 | 2024-12-10. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. |
| PIT5282G | 2024-09-13. Service bulletin. This Preliminary Information communication provides information to the technician that a customer may request the factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the body harness. Install trailer brake controller harness General Motors part number 23184088 into Middle Bus Electrical Center (X61A). |
| PIT5509L | 2024-09-11. Service bulletin. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System” message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector. |
| PIT6212 | 2024-09-11. Service bulletin. This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike into the trucks electrical system which is causing DTC C1114 to set. |
| 22-NA-244 | 2024-05-30. Warranty extension. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period. |
| PIP5596A | 2024-04-15. Service bulletin. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation. |
| PIT5479F | 2024-03-18. Service bulletin. This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed. |
| 23-NA-144 | 2023-09-15. Service bulletin. This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self Applies at Full Turns. |
A bulletin is the manufacturer's note to its dealers. It is not part of this recall.