On September 10, 2026, while traveling approximately 60+ mph in the passing lane, my 2018 Chevrolet Silverado 1500 suddenly lost normal acceleration and entered Reduced Engine Power mode. Vehicle speed dropped to approximately 40 mph, and pressing the accelerator would not provide normal power. This created a safety concern while traveling at highway speed. On September 11, OnStar On-Demand Diagnostics documented ECM code P2138 (Accelerator Pedal Position Sensor 1-2 Correlation) and ABS code U0422. The TCM reported no error codes. The check-engine light later turned off, indicating the problem is intermittent. GM Technical Service Bulletin 07-06-04-019F addresses intermittent P2138 with Reduced Engine Power and possible water intrusion/corrosion affecting the accelerator pedal position circuit. After removing the driver’s kick panel, we observed evidence of previous moisture/rust in the area, but the exact cause has not yet been diagnosed. The vehicle is scheduled for diagnosis by a Chevrolet dealer. I am reporting this because the sudden loss of acceleration at highway speed created a safety hazard and to document the incident for potential defect-trend investigation.
2018 Chevrolet Silverado 1500: ABS light or ABS activating
15 of the 524 complaints about the 2018 Chevrolet Silverado 1500 describe ABS light or ABS activating.
- owner complaints
- 15
- of this car's complaints
- 3%
- typical mileage
- 80,000
- recalls
- 2
ABS light or ABS activating by model year
What owners say
The contact owns a 2018 Chevrolet Silverado 1500. The contact was alerted by OnStar of a failure with the stability system. While the contact’s husband was driving 45 MPH, the vehicle was jerking; the brakes were sticking while the brake pedal was depressed. The failure persisted while driving 50 MPH. The driver used the back roads while driving to the residence. The brakes and ABS warning lights were flashing quickly. The vehicle was taken to AutoZone, and DTC: U0422, was retrieved. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed that the VIN was not included in the federal safety agency Campaign Number: 19V761000 (Service Brakes, Hydraulic, Service Brakes, Electronic Stability Control (ESC); and referred the contact to the federal safety agency Hotline to report the failure. The approximate failure mileage was 113,000.
Purchased used 6/12/2026 at 188,882 miles from a franchised Chevrolet dealer. The integrated trailer brake system master fuse and passenger-side turn signal fuse were blown at delivery. When the fuses were replaced, the trailer brake system faulted and the failure disabled the ABS, traction control, and StabiliTrak (electronic stability control). Significant safety concern: with the master fuse blown/open, the vehicle displays NO warning messages of any kind — the safety-system failure is completely masked while trailer braking is inoperative. The warning cascade only appears when a good fuse is installed and the faulted circuit is energized. Separately, at approximately 12 days and ~1,700 miles after purchase, the engine began knocking and set diagnostic trouble codes; a dealer repair order dated 7/6/2026 documents the knocking complaint with no work performed. The vehicle is currently parked as unsafe to drive. No crash, injury, or fire. Reporting so the ABS/ESC failure mode — and particularly its masking behavior when the fuse is open — is on record for this VIN and vehicle line.
ABS warning light came on and brakes starting acting strange. The brake pedal was soft and was hard to depress. I took it to dealer and they checked codes and comfirmed the vehicle has serval codes. They cleared all codes and started the engine. Immediately the ABS warning came on. I am very concenedn about family, I just purchased the truck on Jan 21, 2026. Please help!!
The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that while driving 70 MPH, the vehicle lost motive power and the lifters collapsed. The contact was able to pull over safely. The contact stated that the engine and ABS warning lights were illuminated. The vehicle was towed to the residence. The contact called the local dealer, who informed them about the diagnosis and the cost for the repair. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the federal safety agency Hotline. The failure mileage was approximately 120,000.
The contact owns a 2018 Chevrolet Silverado 1500. The contact stated that on several occasions while driving at various speeds and in also while reversing, the “Trailer brake system Service” and "Stabili-trak Service" messages were displayed. Additionally, the ABS warning light flashed on the instrument panel. The vehicle stalled on several occasions; however, on other occasions, the power steering function became inoperable. The vehicle was able to be restarted after each failure. The vehicle was taken to the dealer where it was determined that the battery needed to be replaced. The vehicle was repaired but the failure reoccurred. The manufacturer was notified of the failure. The failure mileage was approximately 95,000.
The wheel/wheels locked up while in motion and caused vehicle to veer off road and cause the vehicle to crash. ABS light and Stability Control System warning came on prior to crash.
The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving 60 MPH, the vehicle independently made a sudden stop without warning. The contact turned off and restarted the vehicle, and the vehicle started operating normally. The contact was able to drive the vehicle home, but once the vehicle was home, the brakes locked up, not allowing the vehicle to move forward. The vehicle was diagnosed, and the contact was informed that the ABS had malfunctioned. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 111,000.
Service parking brake system keeps coming on, switch has been replaced and it still comes on. I have had the traction control light and service abs light come on. Took to shop they told me there was a broken wire the first two times in the harness
My vehicle came equipped from the Factory with 18” wheels and tires and a 17” wheel and tire. The vehicle is equipped with 4 wheel ABS which fails to operate properly when using the factory equipped spare tire. GM recall a number of 2018 and 2019 vehicles with this very issue but did not recall my vehicle for this identical issue. I contacted GM who said if my VIN is not listed in the recall it is not an issue and they cannot correct the problem.
The contact owns a 2018 Chevrolet Silverado 1500. The contact stated while driving 55 MPH and towing a trailer, the stabilitrak warning light illuminated on the instrument panel. The ABS and traction control warning lights were intermittently flashing. Soon after the warning lights appeared, the brakes started to lock up and the contact lost control of the vehicle and veered off to the right side of the roadway. The brake pedal released soon after the failure and the warning lights disappeared. The contact was able to resume normal driving at a low rate of speed with the hazard lights activated. Neither the dealer nor the manufacturer was notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 12,000. The VIN was not available.
Abs (trailer braking system) and stabitrak warning lights randomly come on while driving and remain on until vehicle turns off. On multiple occasions the rear wheels have locked and steering becomes difficult even when brakes are not being applied. This has occurred while driving at varying speeds and in varying weather conditions. Vehicle has been checked by dealer on 3 separate occasions for this and service was reported unable once lights have gone off. Said incident has occurred approximately 30-50 times over the past 18months.
Service bulletins that may apply
Related recalls
Service brakes, hydraulic: power assist: vacuum
- 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.
- Risk
- A decrease in brake assist can increase the brake pedal effort and distance required to stop the vehicle, increasing the risk of a crash.
- 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.
Recall number 20V603000 · Recall details
Service brakes, hydraulic: power assist: vacuum
- What is wrong
- General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum created by the vacuum pump may decrease over time.
- Risk
- As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began October 8, 2019. Owners may contact Chevrolet customer service at 1‑800‑630‑2438, Cadillac customer service at 1‑800‑458‑8006 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N192268490.
Recall number 19V645000 · Recall details
Questions about the 2018 Chevrolet Silverado 1500 abs
Is ABS light or ABS activating a common problem on the 2018 Chevrolet Silverado 1500?
15 of 524 owner complaints about the 2018 Chevrolet Silverado 1500 (3%) mention ABS light or ABS activating. The model year with the most reports is 1999.
Is there a recall or service bulletin for this on the 2018 Chevrolet Silverado 1500?
There are 2 recalls and 31 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2018 Chevrolet Silverado 1500
Check engine light 45Transmission failure 32Harsh shifting 31Jerking 29Stalling 28Loss of power 26Engine failure 22Shudder 20Knocking 17Overheating 17Slipping 13Misfire 12Fuel pump 11Power steering loss 11Adaptive cruise 10Grinding brakes 10Fire or smoke 10Headlights 10Hesitation 9Won't shift 9Brake failure 8Seat belt 8Ball joint 7Tire blowout 6Steering lock-up 5Warning lights 5Won't start 5
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