Loss of brakes after putting truck in reverse

[Paul Samples]

On 2/28/2018 at 9:25 AM, Donstar said:

I thought you gave a great explanation in your previous post!      "So while backing into a space with your foot mostly on the pedal, easing yourself into the spot sort of feathering the brake pedal.....that will drain the vacuum in the booster."

 

 

[Paul Samples]

Today this happened to me as I backed into a parking space my brakes failed.  A curb stopped the reverse motion.  I could not.  No issues going forward.  It’s not an issue you can repeat at will.  If it was a double space parking space I would be replacing a front grill on the unfortunate auto behind me.  Not good.   

[Acjarhead]

Great news , My 2017 High Country just did the same in reverse.

luckily I was backing my new Tritoon in the water when it happened.

Scared the crap out of me. Both feet did stop it, and a change of close.

I pulled it over 100 miles forward with no problems. Freaky

GM said it is not a Safety issue. So special warranty is issued. 
I can’t use it on a rebuilt with 50000 miles.

Thanks for your input. I now know what to fix. 
Reverse only ,Strange!!!