How do you adjust the rear brakes on a 1999 Dodge Caravan?
Are the rear disc brakes or rear drum brakes?
If they are disc brakes, ther is no adjustment. If they are drum brakes, you adjust them by backing up and hitting the brakes. Do it in an empty parking lot.
If they are drum style brakes, simply put the van in reverse, and accelerate backwards about 10 feet, and jam on the brakes.. repeat a few times and the auto-adjusters will tension the shoes against the drum properly accounting for the pads thickness, or lack thereof.
If they are disc brakes, you have no capability to adjust them without removing the wheels, the calipers, and "shimming" the pads so they are thicker inside the caliper. If your pads are to thick, then you have the wrong pads, and if they are to thin to shim out, and safely stay inside the caliper, then yours pads are worn and needing replacement.
I have a 99 Caravan and the rear brakes are entirely conventional drums. Purchase a Haines repair manual from a parts store and review the procedure before beginning. It is quite easy to perform, but do only one side at a time so you can refer to the assembled side if needed. Have you ever done drum brakes before? Or is this a first time? If it's a first time, I would suggest you watch…
Yes, of course you can adjust the rear drum brakes. They should be self adjusting. Every time you back up and apply the brakes they should adjust themselves. If that is not working, look for a small rubber plug on the back of the backing plate. Remove that plug and with a brake adjustment tool, you can adjust the brakes. Search Google for the proper procedure to adjust drum brakes.