Photo: Chevrolet
Covering the 2014 to 2018 model years, the General Motors recalls we’ll talk about today started in November 2018 with a preliminary investigation by the National Highway Traffic Safety Administration. At that point, the watchdog had a few questions to ask GM about nine crashes and two injuries related to an issue of the braking system in pickup trucks and SUVs.
The nameplates in question are the Chevrolet Tahoe, Suburban, Silverado, GMC Yukon, Yukon XL, Sierra, Cadillac Escalade, and Escalade ESV. These full-sized vehicles with a body-on-frame architecture all share the K2XX platform for rear- and four-wheel-drive applications. General Motors is phasing out these underpinnings in favor of the T1XX, which cuts back on curb weight thanks to more aluminum content for the body panels.
Going back to the extensive recall campaign, General Motors told the National Highway Traffic Safety Administration that the vacuum of the vacuum pump could decrease over time, leading to decreased stopping power. Documents filed with the NHTSA further reveal that the Electronic Brake Control Module can be recalibrated to improve the hydraulic brake boost assistance when the vacuum pump doesn’t operate as intended. That’s right; no replacement!
The secondary system is limited at lower speeds for the time being, but the different software will tell the EBCM to work its magic regardless of velocity. So far, General Motors has 113 complaints and is aware of 13 injuries related to the defective vacuum pump that won’t be replaced free of charge.
If you experience a vibration in the brake pedal while driving your truck or SUV, that’s an indicator the problem is present. More pressure usually compensates for the lack of vacuum, and as you’d expect, the instrument cluster will instruct the driver to service the brake system as soon as possible.
Prior model years (up until 2013) don’t use this vacuum pump, and General Motors has also discontinued the defective part after 2018. On that note, here’s hope T1XX-based trucks and utility vehicles are that bit better when it comes to stopping power.
Going back to the extensive recall campaign, General Motors told the National Highway Traffic Safety Administration that the vacuum of the vacuum pump could decrease over time, leading to decreased stopping power. Documents filed with the NHTSA further reveal that the Electronic Brake Control Module can be recalibrated to improve the hydraulic brake boost assistance when the vacuum pump doesn’t operate as intended. That’s right; no replacement!
The secondary system is limited at lower speeds for the time being, but the different software will tell the EBCM to work its magic regardless of velocity. So far, General Motors has 113 complaints and is aware of 13 injuries related to the defective vacuum pump that won’t be replaced free of charge.
If you experience a vibration in the brake pedal while driving your truck or SUV, that’s an indicator the problem is present. More pressure usually compensates for the lack of vacuum, and as you’d expect, the instrument cluster will instruct the driver to service the brake system as soon as possible.
Prior model years (up until 2013) don’t use this vacuum pump, and General Motors has also discontinued the defective part after 2018. On that note, here’s hope T1XX-based trucks and utility vehicles are that bit better when it comes to stopping power.
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