Brakes

[sdeeter19555]

So with 235k on my '12, I think I have a passenger's (right) side caliper hanging up because in a panic stop it jerks left.  If you come down on them normally, no jerk (but I'm now thinking I feel a drift left when braking harder).  I've just had all four wheels off and all four calipers loose looking for an obvious cause, there is no oil contamination (like a leaking seal) and all the pins are free, so it points to the calipers.

 

It has very recent GM severe service pads and corrosion-resistant rotors, so not touching those unless i absolutely need to.  Aside from the jerking wheel, the truck will still stop on a dime.

 

So the plan is just to swap out all four calipers.  I think they are also worn on the pins as the fronts rattle when you shake them (and hit bumps).  Looks like about $600 for GM/AC Delco calipers, not sure if any other brand is worth looking at?

 

My question is regarding brake hoses.  I've been around older Dodge trucks mostly and the hoses on them tend to swell shut internally which then causes poor braking...but those were also 1970s, 80s, and 90s technology.  Unless they are physically damaged, do the brake hoses on these modern trucks need replaced periodically?

 

 

[richard wysong]

Yes

[sdeeter19555]

So I swapped all new AC Delco calipers and calipers brackets from Rock Auto.  Installed new AC Delco severe service semi-metalic pads as well.

 

The caliper slides were worn in the caliper, it was causing a rattle.  I had replaced the pins and bushings a few times, so it was NOT the pins or bushings.  I found this out after swapping parts.

 

Calipers and brackets did not cure my pull to the left.

 

I ordered and replaced all the brake hoses with Raybestos E3, that cured my pull to the left.  I think it was the caliper hoses on the right side, the center hoses on the rear axle were wide open.

 

One thing to anyone not experienced with these hoses, they are keyed to the bracket in one direction.  I foolishly assumed they were a hex shape, they are not a complete hex (one point is round).  The other end is keyed by two tabs, which are different size and again, only one way to fit the bracket.  I fought the brackets for a while before realizing this...

 

Amazingly, 240k miles and 13 years of Pennsylvania winters and all the parts came apart easy...I guess oil undercoating is worth my time.