Warranty & Shipping
How-To & Tools
Product Reviews
Vehicle Fit


  • Includes Driver and Passenger Side
  • Includes inner bushings
  • New, not remanufactured or refurbished

Our control arms are designed to be direct replacements for the original factory parts.  They are 100% brand new and require no modifications for installation.  No special tools are required because all of the bushings come pre-installed.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

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.

  1. step : Removing the Wheel (0:41)
    • 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 Control Arm (1:03)
    • Apply penetrating oil to the 15mm bolt that holds the control arm to the steering knuckle Remove the 15mm bolt that holds the control arm to the steering knuckle
    • Pry the brake line from its clips with a flat blade screwdriver
    • Strike the control arm with a hammer to separate it from the steering knuckle
    • Secure the knuckle with wire ties, wire, or string
    • Apply penetrating oil to the two 21mm control arm bolts
    • Remove one 21mm bolt from the control arm
    • Loosen the other 21mm bolt
    • Push out the second 21mm bolt with a hammer and a flat blade screwdriver
    • Pull off the control arm
    • Strike the remaining bolt out of the control arm with a hammer
  3. step : Installing the New Control Arm (3:52)
    • Pry the brake line clips out of the control arm with a flat blade screwdriver
    • Push the new control arm into place
    • Start the two 21mm bolts into the control arm
    • Tighten the two 21mm bolts preliminarily
    • Remove whatever is securing the wheel knuckle
    • Put the control arm onto the wheel knuckle
    • Tap the control arm onto the wheel knuckle using a hammer
    • Start the 15mm bolt and nut that hold the control arm to the steering knuckle
    • Tighten the 15mm bolt to 50 foot-pounds of torque
    • Push the brake line clips onto the new control arm
    • Clip the brake line into the clips
  4. step : Reattaching the Wheel (6:11)
    • 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 to 100 foot-pounds in a crossing or star pattern
    • Reattach the center cap

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Floor Jack
  • Hammer

  • Materials, Fluids, and Supplies

  • Wire Ties
  • Rust Penetrant
  • Wire or String

  • Pliers, Cutters & misc Wrenches

  • Wire Cutters
  • Needle nose pliers

  • Ratchets & Related

  • Torque Wrench
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 15mm Socket
  • 19mm Socket

  • Wrenches - Metric

  • 21mm wrench
  • 15mm Wrench

4.85/ 5.0
13 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Control Arms for GMC Envoy
I installed the control arms on my 2004 GMC Envoy last weekend. I found that the 1A Auto video was very helpful for the passenger side. However, the video did not mention that the trucks body poses a significant challenge for removing the left bolt on the drivers side control arm. I read online that other driveway mechanics had been faced with the same problem. I dont intend to report how I addressed the problem, since I dont want to encourage others to use my very imperfect solution. It would help if 1A Auto updated its video to address this problem.
September 5, 2017
I like this product. Great fit and great price, more importantly, it fixed the problem.
September 12, 2017
Fit perfectly on 06 trailblazer looked identical to factory ones removed
November 20, 2017
Good product
Good quality part and a great price. Went on the Envoy with no issues and had the vehicle running smooth.
December 30, 2017
Upper control arm and ball joints for a 2002 GMC Envoy
The video was excellent doing the work was easy saved another 7 $150 in parts and labor by buying the parts through 1A Auto and watching their video
February 1, 2018
The parts were as described. Great fit easy installation. And good how to videos
July 6, 2018
The upper control arms worked perfect easy to install and came out good. The ball joint also works good and works properly. Just one comet when taking out and putting it back in take pictures of the correct pieces of the ball kit took .so you dont scrounge figure out how you did it to save time.
September 14, 2018
Upper control arms
Great product for a great price. I got bot upper control arms and ball joints for half of the price for one from advanced auto which came with no ball joints.??
October 2, 2018
Great product
Very good product would recommend to all my friends and family. Will be doing more shopping here
October 2, 2018
Control Arm
Excellent fit and fast shipping. Will continue to order from 1AAuto. Very good experience.
October 11, 2018
2008 Chevy trailblazer
Fast service and a quality product. Fit perfectly and vehicle rides and handles smoothly.
October 14, 2018
October 25, 2018
Excellent Product!
Great control arm! Truck rides smooth again, the ball joint are much better quality then the once I replaced a while back that I odder from eBay! worth your money
November 23, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Are the control arm bushings press on?
Matthew P October 12, 2017
I believe so, had a mechanic install them so Im not 100%. I can tell you that had to replace both after just over a year.
Robert H October 12, 2017
Yes they are.
Lawrence T October 12, 2017
Yes, they are pressed on from our vendors.
Alex P October 12, 2017
Yes they are, just make sure you remove the rubber housing before you insert them into press
Juaq G October 13, 2017
Yes. To remove lower strut mount, loosen nut holding strut to control arm until threads are even with outer edge of nut. Use prybar on lower strut mount to pry off strut while hitting the nut with a hammer. I found this technique on YouTube.
Terry K October 13, 2017
Leon D October 17, 2017
Did you have to do any modifications to the upper ball joints concerning the thickness or did it go right is without any modifications?
G B November 25, 2018
No I did not have to do any modifications
Johnny H November 26, 2018
It go right on without any modifications
Alfredo N November 26, 2018
Didn’t need any modifications
Jonathan G November 26, 2018
Shouldnt have to do any modifications. My mechanic never mentioned any modifications needed during the install. 2002 Trailblazer LS
Steven M November 26, 2018
With my truck, it went rite in as a bolt on install, i did have it aligned when i was done, other than that, parts fit good
Anthony G November 26, 2018
No modifications, but I had a custom made cup to push out the ball joint , nothing you can rent is the right size
TERRY N November 26, 2018
Year Make Model Description
2004-2007Buick Rainier Buick Rainier Front Upper Control Arm with Ball Joint Pair
2002-2009Chevy Trailblazer Chevy Trailblazer Front Upper Control Arm with Ball Joint Pair
2002-2005Chevy Trailblazer EXT Chevy Trailblazer EXT Front Upper Control Arm with Ball Joint Pair
2002-2009GMC Envoy GMC Envoy Front Upper Control Arm with Ball Joint Pair
2003-2004GMC Envoy XL GMC Envoy XL Front Upper Control Arm with Ball Joint Pair
2003-2008Isuzu Ascender Isuzu Ascender Front Upper Control Arm with Ball Joint Pair
2002-2004Oldsmobile Bravada Olds Bravada Front Upper Control Arm with Ball Joint Pair
2005-2009Saab 9-7X Saab 9-7X Front Upper Control Arm with Ball Joint Pair
Part #: 1ASFK02083

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(07:28 min)