To ensure the vehicle performs safely and as designed, we recommend replacing shocks & struts in pairs. If the damping rates are significantly different from side to side (like using different brand parts or mixing old with new) the vehicle body and wheel movement variations could cause handling irregularities. We also recommend performing an alignment after replacement. This will ensure proper tracking and protect your vehicle's tires from premature wear.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Removing the Wheel (0:52)
    • Pull back the insulation from the trunk
    • Remove the three 15mm nuts with a wrench
    • Loosen the lug nut covers with a 19mm socket
    • Pry off the center cap with a flat blade screwdriver
    • Loosen the lug nuts with the vehicle on the ground
    • Raise the vehicle with a floor jack
    • Secure the vehicle on jack stands
    • Remove the lug nuts
    • Pull off the wheel
  2. step : Removing the Rear Shock Strut (2:09)
    • Hold the bolt on the sway bar link with a 14mm wrench
    • Remove the nut with an 18mm socket
    • Push the sway bar out and to the side
    • Remove the two 21mm nuts from the bottom of the strut and knuckle
    • Remove the two 13mm bolts from the brake caliper
    • Pry the caliper off with a flat blade screwdriver
    • Hammer the bottom of the strut to loosen the bolts
    • Hammer the bolts out
    • Remove the rotor
    • Lift the strut up and push it back off the knuckle
    • Pull it out from the studs at the top
    • Remove the rear shock strut
  3. step : Dissembling the Rear Shock Strut (4:28)
    • Place the spring compressors on either side of the spring
    • Tighten each back and forth a little while alternating sides
    • Remove the nut at the top of the strut with a strut socket and T45 Torx bit
    • Pull the plate from the top of the strut free
    • Remove the spring and gasket
    • Pull the boot up and off
  4. step : Assembling the Rear Shock Strut (5:52)
    • Place the gasket onto the new strut
    • Replace the boot
    • Insert the spring into its notch on the strut
    • Push the plate on the strut with the rounded end facing the brackets on the bottom
    • Push down on the strut and insert a 6mm Allen nut
    • Loosen each of the compressors bit by bit while alternating sides
    • Repeat until the spring compressors pull free
  5. step : Installing the Rear Shock Strut (7:32)
    • Insert the strut into place
    • Push down on the knuckle and place the strut behind it
    • Push the strut onto the knuckle
    • Insert the 21mm bolts into the bottom of the strut and knuckle
    • Jack up the knuckle with a jack stand
    • Line up the studs on the shock strut
    • Replace the 15mm nuts in the trunk
    • Hammer the 21mm bolts in and tighten them
    • Torque the 21mm bolts to 120 ft/lbs
    • Push the rotor into place
    • Hammer the brake caliper back on
    • Replace the 13mm bolts in the brake caliper
    • Push the sway bar link into its slot
    • Insert and tighten the 18mm nut on the sway bar link
  6. step : Reattaching the Wheel (10:09)
    • Slide the wheel into place
    • Start the lug nuts by hand
    • Tighten the lug nuts preliminarily
    • Lower the vehicle to the ground
    • Tighten the lug nuts
    • Tighten the lug nuts to 100 ft/lbs in a crossing or star pattern
    • Reattach the center cap
    • Tighten the lug nut covers with a 19mm socket
    • Tighten the three 15mm bolts in the trunk
    • Replace the trunk insulator in place

Tools needed for replacement:

    Allen Wrenches

  • 6mm Allen Wrench

  • General Tools

  • Floor Jack
  • Jack Stands
  • Hammer

  • Ratchets & Related

  • Ratchet
  • Torque Wrench
  • Socket Extensions

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 21mm Socket
  • 13mm Socket
  • 18mm Socket

  • Specialty Tools

  • Strut Spring Compression Tool

  • Torx Drivers & Sockets

  • T45 Torx Socket

  • Wrenches - Metric

  • 14mm Wrench
  • 15mm Wrench

There are no reviews for this item. Write Review
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

How-to Video:

(11:33 min)

Tools List:

    Allen Wrenches

  • 6mm Allen Wrench

  • General Tools

  • Floor Jack
  • Jack Stands
  • Hammer

  • Ratchets & Related

  • Ratchet
  • Torque Wrench
  • Socket Extensions

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 21mm Socket
  • 13mm Socket
  • 18mm Socket

  • Specialty Tools

  • Strut Spring Compression Tool

  • Torx Drivers & Sockets

  • T45 Torx Socket

  • Wrenches - Metric

  • 14mm Wrench
  • 15mm Wrench



This part replaces:

  • Monroe 271662R

Vehicle Fit

  • 2005-2009 Buick Allure Rear Strut & Spring Assembly Passenger Side excluding 17 or 18 Inch Wheels
  • 2005-2009 Buick LaCrosse Rear Strut & Spring Assembly Passenger Side excluding 17 or 18 Inch Wheels
  • 2000-2013 Chevy Impala Rear Strut & Spring Assembly Passenger Side excluding Police Package excluding 17 or 18 Inch Wheels
  • 2000-2007 Chevy Monte Carlo Rear Strut & Spring Assembly Passenger Side excluding Police Package excluding 18 Inch Wheels
  • 2004-2008 Pontiac Grand Prix Rear Strut & Spring Assembly Passenger Side excluding 17 or 18 Inch Wheels
Part #: 1ASTS00816

Ships Same Day for orders placed by 4 P.M. ET

We're here to help

1A Auto Parts

Customer Feedback

"Thanks for the fast reliable service. Great price, and the headlights were as good as oem or better!!! Keep up the good work..."
- Dwuan M.
Read More