Seems like the trailblazers had wiper issues on my model! My front wiper will work fine on the low or high mode when it is steadily moving, but if i put it on the mode where it has a pause, the front wiper hesitates and sometimes gets stuck in position on the window and i have to turn back to low or high to fix it. Is this part bad and i need new, or can i fix this? Also, the rear sometimes works fine, but a lot of times it moves slowly until it freezes then i have to get out and move it back to the down position. Do i need to replace both of these? Also, dont wanna overpay, so is gmpartsdirect the best place to order from?