the rear wheels not release on Dodge Grand Caravan

There appears to be a pin mechanism that is "stuck" in the gear prevening it from letting the wheel turn . The pin has a wire or something going into it.

You need to back off the brakes in order to get the drum off. There is a hole in the back of the drum (see picture). There is and adjuster inside that is held in place by a tab that wont allow you to move the adjuster until you move the tab out of the way. This will take two screw drivers or similar objects. One to hold the tab out of the way and the other to adjust the adjuster down.

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I will attach instructions to remove the drum. Also check the weel speed sensor?

REAR BRAKE DRUM

REMOVE

1. Remove the tire and wheel assembly from the vehicle

Remove the park brake cable, for the wheel of the vehicle that is being worked on, from the park brake cable equalizer This is required to gain access to the star wheel. If the cable is not removed from the equalizer, the cable and spring inside of the brake drum is in the way of the star wheel.

1. Remove the rear brake shoe adjusting hole cover plug.
2. Insert a thin screwdriver into brake adjusting hole and hold adjusting lever away from notches of adjusting screw star wheel.
3. Insert Tool into brake adjusting hole and engage notches of brake adjusting screw star wheel. Release brake adjustment by prying down with adjusting tool.
4. Remove rear brake drum from rear hub/bearing assembly.

INSTALL

1. Adjust brake shoes assemblies so as not to interfere with brake drum installation.
2. Install the rear brake drums on the hubs.
3. Adjust rear brake shoes
4. Install the removed park brake cable back on the park brake cable equalizer
5. Install wheel and tire.
6. Tighten the wheel mounting stud nuts in proper sequence until all nuts are torqued to half specification. Then repeat the tightening sequence to the full specified torque of 130 N·m (95 ft. lbs.)

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After getting the drum off whatever was locked up will get instantly unlocked!

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Also recheck the brake pads you replaced, may be a pin or caliper not place or fitted properly.------

The brake pad replacing procedure is as follows :---

Park the Dodge Caravan onto a level, hard surface. Turn off its ignition, and set the emergency brake. Loosen the wheel's lug nuts with the lug wrench, turning counterclockwise. Chock the rear wheels so they do not move. Raise the van with the jack equipped with the Dodge Caravan. Place jack stands under the Caravan, and lower the Caravan onto the jack stands.

Remove the lug nuts with the lug wrench, turning counterclockwise. Remove the tire, and put the lug nuts in the rim of the tire so they do not get lost.

Twist the upper caliper bolt until it loosens. Use a wrench to hold the guide pin on one side and another wrench to turn the bolt counterclockwise as it loosens. Remove the lower caliper bolt, and hang the caliper to the vehicle's frame with automotive wire to prevent damaging the brake hose.

Remove the old brake pads. Find the caliper-bleeder screw, and loosen it with a wrench, turning counterclockwise. Use a C-clamp to push down on the caliper piston to release the brake fluid into a safe container. After the brake fluid stops leaking, remove the C-clamp from the caliper piston, and tighten the bleeder screw, turning clockwise.

Install the new brake pads in the same position as the old pads. Reinstall the caliper, and align its position with the guide pin. Push in the guide pin bolt, and tighten it with a wrench, turning clockwise.

Put the tire and lug nuts back on the Caravan. Tighten the lug nuts by hand.

Lower the vehicle to the ground with the jack. Tighten the lug nuts completely with the lug wrench.

Repeat steps 1 through 7 on the other side of the car.

Fill the brake reservoir under the hood of the car with brake fluid to the maximum level. Solicit a helper, and have him pump the brake pedal until it no longer falls to the floorboard. Hold the brake pedal down as for as it goes steadily.

Ease the brake bleed screw counterclockwise on the caliper. Listen for air and brake fluid to come squirting out of the brake line. Catch the brake fluid in a safe container.

Maintain steady pressure on the brake pedal. Tighten the bleeder screw back up. Repeat this process to remove all the air in the brake line. Bleed the brake lines on both sides of the Dodge Caravan.

Check the brake fluid reservoir. Fill it to the maximum level after the brake lines are bled and free from air.