You should be starting a new question for your vehicle. Unlike other sites where anyone can add a comment, this was a private conversation between two people. For the rest of us, it is listed as having received a reply, so we don't get to see your addition or have a chance to reply. That won't get you the help you need. I only stopped in to see the results.
In this case I suspect a common issue was overlooked. Almost all pickup trucks and minivans can have a wide range of loading in the rear, from empty to fully-loaded. As such, more braking power is needed in the rear when carrying a big load, but that would cause easy rear-wheel lock-up when lightly-loaded. To address that, they use a height-sensing proportioning valve in the rear, with a linkage between the body and the rear axle housing.
With age, the vehicle's springs sag and ride height is reduced. That is checked by alignment specialists, and must be corrected for best handling, tire wear, steering response, and comfort, before performing an alignment. Ride height also affects front-to-rear brake system performance, but in this case, sagged springs make it look like there's a heavy load in the rear. More brake fluid pressure goes to the rear brakes than is needed, thus the easy rear-wheel-lock-up.
On Chrysler minivans that height-sensing proportioning valve is easily adjusted in less than 15 seconds. For other brands, some have an adjustable link, or there may be some other means of adjustment. If there is no way to adjust that valve, the only fix is to replace the springs to restore proper ride height. Every tire and alignment shop has small books showing every vehicle, where to take the height measurements, and what they should be.
Thursday, August 31st, 2017 AT 4:29 PM