BRAKES LOCK UP

[Superman_XCI]

 

When getting up to speed in town (30 mph) sometimes the back breaks will lock up for a split second to the point the tires screech. I bought the truck 7 months ago and its done it maybe 4 or 5 times. This last one was by far the worst one. I was wondering if anyone has had this problem?

 

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[Eddie 70]

That's the first time I have heard of that one. Maybe there is a brake pad loose in the caliper? Hopefully someone will chime in and be able to help you out. That has got to be alarming!

 

[Superman_XCI]

That's the first time I have heard of that one. Maybe there is a brake pad loose in the caliper? Hopefully someone will chime in and be able to help you out. That has got to be alarming!
 

Ive had wheels off shortly after i had it to take wheel skins off and i didnt notice anything with the brakes themselves. Stops just fine. Its a z71 i almost wonder if it hasn't have something to do with the downhill assist. The other day pulling into work the road has a slight grade to it and a caught a glance of the "downhill assist has been activated" (thats what i think i saw but cant say for sure as i was watching for traffic) idk but its rather unsettling as i pulled out in traffic and it did it with a expensive car behind me.

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[Superman_XCI]

Ive had wheels off shortly after i had it to take wheel skins off and i didnt notice anything with the brakes themselves. Stops just fine. Its a z71 i almost wonder if it hasn't have something to do with the downhill assist. The other day pulling into work the road has a slight grade to it and a caught a glance of the "downhill assist has been activated" (thats what i think i saw but cant say for sure as i was watching for traffic) idk but its rather unsettling as i pulled out in traffic and it did it with a expensive car behind me.

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I have a powertrain warranty but idk what it covers.


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[JimCost2014]

6 minutes ago, Superman_XCI said:

Ive had wheels off shortly after i had it to take wheel skins off and i didnt notice anything with the brakes themselves. Stops just fine. Its a z71 i almost wonder if it hasn't have something to do with the downhill assist. The other day pulling into work the road has a slight grade to it and a caught a glance of the "downhill assist has been activated" (thats what i think i saw but cant say for sure as i was watching for traffic) idk but its rather unsettling as i pulled out in traffic and it did it with a expensive car behind me.

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Just for reference, if the Hill Descent was engaging, this is what it would like on your dash, and how the truck would behave:

 

 

 

[CamGTP]

Also possible a wheel speed sensor dropped out and when it saw one wheel doing zero mph but all the others doing 25mph, it could lock them up with the ABS.