BST BSSP Rear Upper Trailing Control Arm Pair with Pre-Pressed Bushings — Fits 2002–2009 Envoy/TrailBlazer/9-7x/Ascender

Replace worn or damaged rear upper control arms with a matched pair designed to restore factory geometry and road feel. Sold as a pair—one driver-side and one passenger-side arm—this kit includes pre-pressed bushings for faster installation and uses OEM-style fitment numbers (15069837, 15069838, 15069840 and equivalents) to match original parts lists. The components are meant for SUVs that do not have air leveling systems and are supplied as direct-fit replacements to minimize modifications during installation.

How do these control arms affect handling and ride quality?

Rear upper control arms locate the wheel hub relative to the chassis and control camber, toe and suspension travel. Fresh arms with proper bushings reduce play and improve responsiveness, especially during cornering and braking. Worn arms often cause uneven tire wear, looseness or anti-squat issues.

• Restores factory wheel alignment geometry for stable handling
• Reduces free play and steering wander caused by worn mounts
• Helps prevent premature tire wear from misalignment
• Pre-installed bushings simplify replacement and reduce install time

Which vehicles and configurations will these parts fit?

This kit fits 2002–2009 GMC Envoy, Chevrolet TrailBlazer, Saab 9-7x and Isuzu Ascender models that are equipped without factory air level suspension. The listing covers both left (driver) and right (passenger) rear upper trailing arms, matching the part numbers shown in OEM cross-references. Verify vehicle year, model and suspension type before ordering to ensure compatibility.

• Fits 2002–2009 Envoy, TrailBlazer, 9-7x and Ascender
• Not compatible with vehicles that have air level suspension
• Includes both driver and passenger rear upper control arms
• Cross-referenced part numbers included for verification

What’s included with this control arm pair and how are they installed?

The kit contains two rear upper trailing control arms—one for each side—with bushings already pressed into the arm for a more straightforward swap. They are supplied as direct replacements, so in most cases mounting points and hardware reuse or direct-fit fasteners will work. Basic mechanical skills and standard suspension tools are required; alignment after installation is recommended.

• Pair of rear upper control arms (driver and passenger)
• Factory-style pressed-in bushings included
• Direct replacement design for bolt-in fitment
• Suggest post-install wheel alignment to factory specs

How can I confirm part numbers and get help if I’m unsure?

Check your vehicle’s existing part numbers or VIN-compatible parts catalog to confirm matches with 15069837, 15069838, 15069840, 505-00178, 521-979 and related cross-references. If you need assistance identifying the correct item or confirming fitment, the seller offers direct messaging support and aims to reply within 12 hours.

• Use existing control arm part numbers or VIN lookup for verification
• Contact seller for fitment questions; response within about 12 hours
• Keep photos of the original parts handy to speed identification
• Confirm suspension type (no air leveling) before purchase

Who is this for: This control arm pair is intended for DIY mechanics and professional technicians replacing worn rear upper control arms on compatible mid-2000s SUVs without air level suspension. It suits owners aiming to restore handling precision, eliminate play in the rear suspension, and correct alignment-related tire wear without modifying factory mounting points.