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Brakes soft


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I felt the same.  They work but take more effort then most cars I drive, especially new ones.  Usually the brakes are really touchy but not in this truck.  Took awhile to get used to.  Worst part is when I get into a new vehicle that's not mine I end up slamming the brakes the first time.

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4 minutes ago, Bill Henthorn said:

I agree. Seems like I have to smash the brakes to stop even when not pulling a trailer.

 

 

yeah I have been turning on the exhaust brake some.  TBH has almost been dangerous a few times already.  I wonder if this is a 21 thing or just a 20 thing.  Wouldnt be surprised if a TSB or recall came out

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Same with me and the gasser.  No trouble getting stopped, just seems like a lot of pedal pressure.

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I have some SS front brake lines that I never put on my '16 HD. If they fit my '21, I might try them. That would give better pedal pressure. But I agree with all that it does take some foot power to activate.

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41 minutes ago, GMC4Zee said:

I have some SS front brake lines that I never put on my '16 HD. If they fit my '21, I might try them. That would give better pedal pressure. But I agree with all that it does take some foot power to activate.

 

I wonder if that would help.  I would think it has something to do with the booster.

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My 18 half ton didn't have the most positive brakes to me. My 21 HD is OK, but does require some effort. DI motors in the half ton trucks have a auxiliary vacuum pump because they don't make enough vacuum during cylinder deactivation. I know the HD series don't have cylinder deactivation but I'm wondering if there is any relationship. 

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Just throwing this out there, but after driving the truck for almost a week now I have found that a single pump of the brakes immediately provide a firmer pedal. 

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They work good just take effort.....after awhile you dont notice...

 

Aftermarket GM brake kit be super nice but $$$$

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