Some units of the 2022 Chevy Trailblazer may fail to engage cruise control as intended. Now, the root cause of this issue has been identified, as has a fix to address it.
Per a recent report from GM TechLink, some units of the 2022 Chevy Trailblazer may fail to engage or resume cruise control after pressing and releasing the brake pedal. It’s possible that the cruise control system will not reengage until after the brake pedal is pulled back up towards the driver. What’s more, the condition may be intermittent, with cruise control returning to normal after the vehicle is turned off and restarted.
According to the GM TechLink report, excessive brake pedal free play could be the root of the cruise control issue. Specifically, if the brake pedal moves rearwards towards the driver while accelerating, it may result in an inaccurate Learned Release Position in the Engine Control Module (ECM), with the ECM Brake Pedal Position sensor showing a six-percent pedal travel value or more with the brake pedal released, preventing the 2022 Chevy Trailblazer from reengaging cruise control.
In order to fix this issue, GM TechLink is recommending that a technician verify that the Brake Pedal Position Sensor Learned Released Position value is in fact inaccurate. To do so, a technician will need to conduct a test drive with cruise control engaged.
Looking over the onboard GDS 2 data, technicians may notice that the Brake Pedal Position Sensor drops to a lower value than the normal release position while accelerating. This could result in a corresponding drop in the Brake Pedal Position Sensor Learned Released Position value as well, leading to the ECM reading a percentage of travel more than zero when driving at a steady speed with the pedal released. As such, the system will fail to engage cruise control.
If these conditions are found during the test drive, the report is recommending that a GM technician replace the brake and accelerator pedal assembly on the affected 2022 Chevy Trailblazer.
Subscribe to GM Authority for more Chevy Trailblazer news, Chevy news, and around-the-clock GM news coverage.
Comments
Same problem on Encore GL.. also causes brake lights to stay on over night draining battery to dead.. btw not want to happen.. vehicle will not jump start.. needs to recharge battery for a good hour on 50amps . Just an FYI from personal exp. 22 GL sport
I’ve got an 05 Silverado. For years the cruise control was intermittent. My dad has a 17 Volt. They replaced his pedal position sensor and it’s all good. So I tried giving my brake pedal a little tap from behind when the cruise fails and it fixes it every time. If you’re not in warranty, save a few bucks and tap the brake from behind with your foot.
It’s never had the brake lights staying on problem – just the cruise.
05 Silvy.. had old school brake switch and manual+vacuum power assist.. new vehicles use brake pedal position sensor and electric brake booster system
2022 Trailblazer with active cruise control. Switch turns on cruise, but when you try to set the speed it never sets. The cruise icon stays gray instead of green so you can’t even engage non-active cruise. They’ve tried several fixes and even replaced camera module with no success.
Any ideas?
Try a large rubber band or bungee cord from brake pedal to steering wheel to lift pedal 1/4”. Then you will know