I didn't say there was anything wrong with the brakes. The brakes work fine. At no point did I imply there was anything wrong with the brakes. They grab, they bring the vehicle to a complete stop quickly, zero issues. Where did you get the idea that there was anything wrong with my brakes?
I'm not there to drive it, or to view data on the scan tool.
I am entirely used to people blaming the ABS when in fact they have brake system problems apart from the ABS, or--sometimes--in
addition to ABS problems. I'm trying to be thorough.
YOU said that the ABS
"module kicks on for AGES and basically prevents braking altogether for way too long. This isn't a defect." Yes, of course that's a defect. And making a wild guess with too-little evidence, I bet you've got weak signal from the front wheel speed sensors; the ABS thinks the front wheels are locked, so it "prevents braking" in front, leaving your truck relying solely on the rear brakes. But it could be something else--a plugged rear brake hose on my '68 'Camino resulted in truly pathetic stopping power. Say you've got a plugged rear hose, and then the ABS shuts down both front brakes due to sensor problems. Now you've got
no brakes just as you've described.
THEN you say
"Perhaps something that actually pulses the brakes individually rather than lock out the brake pedal for seconds at a time?" Well, sure.
THAT'S EXACTLY HOW YOUR EXISTING ABS MODULE IS SUPPOSED TO WORK, if something wasn't WRONG WITH IT, and almost certainly fixable. You should have three separate channels of independent anti-lock action.
My complaint is with the quality of the ABS system. It's garbage. I'm well aware that it's a 3-channel system, and I fully understand how that works.
You don't give that impression. You seem to think that all three channels get blocked whenever one channel senses lockup.
My point is, instead of pulsing the locked-up channel to prevent lockup, this system literally locks out the brake pedal for an eternity to allow the wheels to regain momentum. It might only be a fraction of a second, but it's a looong fraction of a second, and in a panic braking situation on slippery surfaces, it makes all the difference between "whew" and *smash*. There's no malfunction here, that's how this ABS system is intended to work, and it's garbage. Every GMT400 vehicle I've ever driven behaved this way. There's testimonials in this very thread that confirm it.
Your first post claims you've got a vehicle that "prevents braking altogether for way too long" and your next post says "At no point did I imply there was anything wrong with the brakes. They grab, they bring the vehicle to a complete stop quickly, zero issues."
What am I supposed to think?
Maybe
you need to provide better descriptions of what is going on in the FIRST post of a thread you start.
Once again...when was the last time you bled the ABS with a scan tool? Do the speeds registered by the speed sensors agree with one another?