Greg A Surprise , AZ December 24, 2016 Appliance: Whirlpool Washer GHW9400PL4 Whirlpool Washer Ghw9400pl4: Washer drum was wobbling and bumping against the side. How to replace Shock Absorber. I replaced the shocks after discovering that two had broken. It was very simple with the help from the video tutorial. Also, the price for all four was fantastic, even with overnight shipping it was $100 less than buying from the local repair shop! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes