#Braking

General Motors is recalling around 128,500 vehicles in the United States over a previous fix that didn’t work as intended. The cars stem from a larger December callback that aimed, via a software flash, to mitigate braking problems on about 550,000 Chevrolet Silverado 1500, Cadillac CT6, and GMC Sierra 1500 models from 2019. GM says the solution created issues on about a third of them.

The problems are much the same as before. Affected vehicles may have serious braking issues and have their anti-lock braking system (ABS) and electronic stability control (ESC) fail. At least this time the computer will know enough to indicate a problem via the vehicle’s warning lights. In the previous recall, GM said the vehicles’ diagnostic system would not illuminate the instrument cluster to hint that something was amiss.

The Consumer Reports review that criticized the Tesla Model 3’s stopping distance and all-consuming touchscreen seems to have sparked CEO Elon Musk’s recent spat with the media, but a change of heart at CR might cause Musk to think twice about his proposed rating site for journalists.

After the automaker improved the model’s 60-0 mph stopping distance by nearly 20 feet (a feat accomplished via an over-the-air software update), the publication bestowed the car with a “recommended” rating, despite lingering concerns over certain features. Maybe the torches-and-pitchforks crowd can clear off CR‘s lawn now.

If you weren’t on Twitter yesterday, well, you picked a good day to stay away. However, if public battles between an automaker and the media is your thing, coupled with exasperating (and disturbing) displays of tribalism from the manufacturer’s fan base, Monday was a gold mine.

The social media brouhaha was a result of Consumer Reports‘ less-than-glowing review of the Tesla Model 3, which was found to have the worst braking performance of any contemporary car in the publication’s testing catalog. As Tesla disciples circled the wagon (one created a list of “bad journalists”), Tesla CEO Elon Musk responded to CR‘s findings.

“Lackluster” may be an understatement. In its test of the Tesla Model 3 Long Range model, Consumer Reports discovered plenty of things to like about the California automaker’s smallest electric vehicle, but two large gripes kept the publication from bestowing a coveted “recommended” tag on the sedan.

We’ve complained before — and online videos have aptly demonstrated — about how the Model 3’s massive center screen diverts too much attention away from the road by consolidating simple tasks (like adjusting the dash vents) into the menus and submenus of the vehicle’s interface, and CR‘s opinion was no different. However, the largest issue seen while driving the Model 3 was its lengthy average stopping distance.

The publication went so far as to borrow a privately owned model just to make sure its observations were legit.

This week’s episode of Ask Jack is all about the magic boxes that separate today’s cars from their predecessors — and the unintended consequences of when it all goes wrong.

Reader Eiriksmal writes:

I hope I’ve startled you with this bold introduction. There’s a question I have that only you can answer … probably. It takes a sophisticated man with all sorts of worldly experience that I lack.

You see, I drive a car without antilock brakes, traction control, or stability control. I’m a whipper snapper who’s only been driving 14 years, so I never knew an era without ABS, at the very least. My beloved sixth-generation Maxima, what with the six-speed manual, has a malfunctioning ABS module, so the ABS and TC (no yaw sensor was installed on the 6MT cars — ESC was autotragic only) are kaput. I’ve driven it sans braking assistance for 2.5 years, but today was my first heart-clenching episode caused by a lack of experience with driving an ABS-less car.

I noticed when bedding in some new brakes recently that the back end tries to come around the front in a panic stop after the wheels lock. Sometimes it just squirms a little, other times it would step the back end out a solid 6-8 inches. This confuses me. When I’m pointing in a straight line, holding the steering wheel tight, and jamming the pedal to the floor, why does the lighter back end try to rotate around the heavy nose?

Today, a jerk in an Escape lumbered out in front of me …

This sounds like trouble.

My question is for Sanjeev Mehta. I purchased a 2010 4 cylinder automatic Toyota Camry LE new and have been using it as my daily driver since. My commute is almost all city driving, so I noticed a quirk about the car right away.

If you want to spend fifty days a year on-track, or even twenty, every dollar must be watched. A decent hotel can run eighty bucks or so, including tax, near most East Coast venues. Two hotel nights an event, ten events a year, will run you sixteen hundred bucks minimum. A few years ago I came up with a way to save at least eight hundred of those dollars: drive to the East Coast the night before. Playing a bit of “pickup ball”, to be coarse, can save the other eight hundred. It’s also possible to sleep in bathtubs for free if you have generous friends at the event, so pack a pillow and thick blanket along with your torque wrench and HANS device.

Sunday night passes into Monday morning and I am on the road at 12:30AM to cover the 371 miles to Summit Point’s Main Course. There’s less traffic at night anyway, making it easier to read Wikipedia whenever I have 3G signal. I’ll pick a topic and wander through. From 2AM to 5AM or so I’m reading about the late Michael Bloomfield and the story of the “Super Session” record with Al Kooper and Stephen Stills. A few reviews, a variety of technical diatribes about the ’58-’60 Gibson Les Paul. The maple top is glued to the mahogany body, which stresses the maple under most conditions of heat and humidity, causing the guitar to resonate a bit more. Fascinating stuff. Yes, I read and drive. You’re not allowed to do it in press cars, but I hold the title for the Boxster and therefore if I want to spend the whole trip playing a Martin Backpacker on my lap I’ll damn well do it. If you want me to devote my full attention to the road, raise the speed limit to 195 and give me a plastic trophy for arriving at my destination before everyone else.