The abs system failed when braking on a snowy, icy, slippery road locking all four wheels causing the vehicle to skid out of control. the brake light and abs light and tcs icon were displayed. the brakes had to be released to regain steering control and judicious use of manual braking eventually brought the vehicle to a stop. the abs pump motor was noted running continuously even with the engine off. onstar diagnostics indicated a traction control system error. this braking failure occurred in conditions that the abs is specifically designed to prevent loss of control!
A rough clunk noise occurs when trying to stop, and car actually revs to accelerate speed when applying breaking and trying to stop. (in . motion) this is a dangerous issue. transmission does not appear to smoothly enter into subsequent gears. a jerk occurs in between shifting of gears. (moving) i have been completely stopped on a flat street, and relax my foot off the break, and the car wants to leap jump forward. this is not safe. (stopped) there are several reports of this issue found in online forums from other owners with the same 2017 chevy silverado. just purchased vehicle in november.
Our 2017 silverado 1500 truck went into low power mode while driving on the interstate at 75 mph. it started to run really rough and all of a sudden all the lights were flashing on the dash and it lost power. the light on the dash was flashing low power mode. couldn't get above 35 mph putting us in a very dangerous position with traffic flowing 70 mph + had to try to maneuver off the interstate. turned it off to reset it and it drove normal but the check engine light was on. took it to the dealer and they said they had to reprogram the ecm. i found several other instances of this problem being reported on gm and chevrolet discussion forums.
I am requesting that dot nhtsa investigate the extreme wobble/vibration/shake on new 2017 chevrolet silverado 1500. the vehicle was purchased new and driven under 55 mph for the first 500 miles. after the first 500 miles and beginning to drive highway speeds, between 60 - 75+ miles per hour, a wobble/vibration/shake began to occur. when the wobble/vibration/shake begins the driver feels that control of the vehicle is being lost and the driver must decrease the speed, which is able to be accomplished with both releasing foot off of the accelerator or lightly breaking, in order to regain control. the vehicle has been to the dealer for front left wheel replacement due to the inability of original tire to be balanced, the vehicle has field force balancing 3 times, and the left front axle boot has been replaced. after several attempts to correct the wobble/vibration/shake, the vehicle now has ~10,000 miles, the wobble/vibration/shake continues to occur at highway speeds.