I’ve filed the next security situation with the NHTSA, after spending appreciable time making an attempt to clarify this security situation to Chevrolet solely to get incoherent solutions by individuals who don’t seem competent sufficient to grasp the issue. For those who’ve been in an accident attributable to GM’s velocity management, it’s potential that this will doubtlessly have come into play. I’ve been capable of reproduce this glitch in 2015-2016 Silverado fashions, nevertheless it’s more likely to have an effect on any autos with the identical velocity management. It almost definitely impacts the GMC Sierra, in addition to different vans and autos utilizing the identical velocity management system (probably Yukon, Suburban, Escalade, and Tahoe).
Within the case under, velocity management acts immediately opposite to the way in which it’s said within the person guide, and the way the motive force expects it to behave. Chevrolet doesn’t seem to both perceive or has dismissed the protection implications under. For those who’ve been affected by this, I like to recommend you contact your legal professional.
The ultimate response I acquired from Chevrolet is to maintain the “set” button in slightly than press it a number of instances – despite the truth that their very own proprietor’s guide particularly states that urgent it briefly a number of instances will decrease the velocity:
“To slow down in small increments, briefly press the SET– button. For each press, the vehicle goes about 1.6 km/h (1 mph) slower”
So Chevrolet’s “solution” is, slightly than repair cruise management in order that it behaves the way in which it’s documented within the guide, as an alternative to have me change my driving habits to make use of cruise management in a approach that’s counter-intuitive and never commonplace to different autos, together with different Chevrolet fashions. It’s unhappy that software program bugs like this are among the many best to repair and situation a recall for, but additionally seem to typically be the almost definitely kinds of issues to be dismissed or rationalized by Chevrolet. Within the occasion this prices somebody their life, I needed this to be documented publicly since Chevrolet has expressed little interest in correcting the issue or issuing a recall.
A CONDITION EXISTS WHERE, AFTER THE DRIVER HAS USED THE GAS PEDAL TO ACCELERATE, THEN HAS REMOVED THEIR FOOT FROM THE PEDAL, THEN PRESSES THE CRUISE “SET” BUTTON IMMEDIATELY OR A BRIEF MOMENT LATER, AND THEN IMMEDIATELY ATTEMPTS TO DECELERATE BY REPEATEDLY PRESSING MINUS “-” ON THE CRUISE CONTROL, THAT THE SPEED CONTROL BECOMES CONFUSED AND DISPLAYS MULTIPLE DIFFERENT SPEEDS, WHILE MAINTAINING THE ORIGINAL SPEED, EVEN THOUGH THE DRIVER BELIEVES THEY ARE DECELERATING. THIS CAN BE REPRODUCED ON ANY 2015-2016 SILVERADO MODEL BY FOLLOWING THESE STEPS: THROTTLE UP AND ACCELERATE (TO PASS, FOR EXAMPLE), REMOVE FOOT FROM ACCELERATOR, THEN IMMEDIATELY PRESS THE “SET” BUTTON, FOLLOWED BY 5-10 PRESSES ON THE DECELERATE “-” BUTTON; THE SPEED WILL SET AT 65, FOR EXAMPLE, THEN FLIP BETWEEN 64, 65, 63, 65, 62, 65, 61, 65, 60, 65, AND SO ON, MAINTAINING SPEED AT 65 EVEN THOUGH THE DRIVER IS INSTRUCTING THE VEHICLE TO DECELERATE AND THE REDUCED SPEED IS TEMPORARILY DISPLAYED. IT MAY TAKE 5-10 SECONDS FOR THE SPEED CONTROL TO CLEAR ALLOWING THE DRIVER TO MAKE CHANGES, HOWEVER THEY WILL STILL BE CRUISING AT 65. DURING THIS PERIOD, THE DRIVER DOES NOT REALIZE THAT THEY WERE NOT DECELERATING AT WHICH POINT THEY MAY TAP THE BRAKES TO DISENGAGE CRUISE, BUT HAVE LOST 5-10 SECONDS OF REFLEX TIME. THIS HAS PRESENTED A DANGEROUS CONDITION WHERE THE DRIVER BELIEVES THEY’RE DECELERATING WHEN TOO QUICKLY APPROACHING ANOTHER VEHICLE, RISKING COLLISION.