2007-2012 Acadia, Enclave, Traverse & Outlook Rear Bumper Impact Bar: A Guide to Safe Replacement
This guide covers the essential rear bumper impact bar for the GMC Acadia, Buick Enclave, Chevrolet Traverse, and Saturn Outlook, focusing on inspection, safe replacement, and why a used OEM part is often the best choice after a collision.
- This is a critical safety component; a damaged bar severely compromises crash protection and must be replaced, not repaired.
- A straight, undamaged used OEM part is often superior in quality and safety to a new, low-cost aftermarket part.
- Before buying a used bar, inspect it carefully for any bends, cracks, or damage to the mounting points.
- The primary OEM part number is 22806745, which fits all 2007-12 Acadia, 2008-12 Enclave, 2009-12 Traverse, and 2007-10 Outlook models.
Symptoms of a Damaged Bumper Impact Bar
Unlike mechanical or electrical parts, a bumper impact bar doesn't have traditional failure symptoms like warning lights or performance issues. Failure is almost always the result of a physical impact. Here’s what to look for:
- Visible Damage After an Impact: This is the most common symptom. Even a low-speed collision can cause the bar to bend, crack, or twist. You must remove the outer plastic bumper cover to properly inspect the metal reinforcement bar hidden underneath.
- Bumper Cover Misalignment: If your plastic bumper cover is sagging, pushed in, or has uneven gaps with the body panels, it could be a sign that the underlying impact bar is bent or its mounting brackets are damaged.
- Rattling or Clanking Noises: Unusual noises coming from the rear of the vehicle, especially when going over bumps, could indicate that a damaged or loosened impact bar is moving and hitting against the frame or bumper cover.
- Rust and Corrosion: In areas with road salt or high humidity, rust can form on the steel bar, especially if the paint or coating has been compromised by a minor impact. Severe corrosion can weaken the bar, reducing its ability to protect the vehicle in a future collision.
Buying a Used Bumper Impact Bar: What to Check
For a structural part like this, a straight, undamaged used OEM part is often a safer and better-fitting choice than a new, low-quality aftermarket part. Aftermarket bars may use different materials or have a lighter construction, which can compromise safety. Here’s a detailed inspection checklist:
- Check for Bends or Dents: Lay the bar on a flat surface. It should sit perfectly level. Look down its length from both ends to spot any subtle bends, waves, or twists. Even a slight bend means the part has been compromised and will not absorb a future impact as designed.
- Inspect Mounting Points: The holes where the bar bolts to the vehicle's frame must be perfectly round and flat. Any elongation, cracking, or bending around the bolt holes indicates it was stressed in a collision and should be rejected.
- Examine for Cracks: Carefully check all surfaces, especially around the mounting points and any welded areas, for hairline cracks. A cracked bar has lost its structural integrity.
- Look for Corrosion: Surface rust is often cosmetic, but you should check for deep, flaky, or pitting rust that has weakened the metal. Pay close attention to the inside of the bar and any seams where moisture can collect.
- Verify OEM Markings: Look for a GM part number sticker or stamping to ensure you are buying a genuine OEM part that meets original factory safety standards.
Pro Tip: When replacing the impact bar, it's a good idea to also get new mounting hardware. You may need two spring nuts, GM part number 11610645, to ensure a secure installation.
Known Issues, TSBs, and Recalls
There are no known recalls or Technical Service Bulletins (TSBs) from General Motors specifically for the rear bumper impact bar on the 2007-2012 GMC Acadia, 2008-2012 Buick Enclave, 2009-2012 Chevrolet Traverse, or 2007-2010 Saturn Outlook. This is a simple, robust structural component with no inherent defects.
However, these vehicles have been subject to several other important safety recalls, including for issues with side impact airbag wiring, seat belt cables, and second-row seat belt buckles. It is recommended to check with a GM dealer or the NHTSA website to ensure all applicable safety recalls have been performed on your vehicle.
Replacement Overview and Difficulty
Replacing the rear bumper impact bar is a manageable DIY project for someone with basic mechanical skills. The process involves removing the plastic bumper cover (fascia), unbolting the damaged impact bar, and bolting the replacement in its place.
- Difficulty Rating: 3 out of 5 (Moderate)
- Estimated Time: 1.5 - 2.5 hours
- Tools Needed: Socket set, trim removal tools, screwdriver.
The main challenge is carefully removing the bumper cover without breaking any of the plastic clips or scratching the paint. It is often helpful to have a second person to assist with handling the large, flexible bumper cover.
Warning: A damaged bumper reinforcement bar cannot be safely repaired by heating, bending it back into shape, or welding it. These actions destroy the temper of the high-strength steel, and it will not perform correctly in another collision. Replacement is the only safe option.
Cost Comparison
The cost of a replacement bumper impact bar can vary significantly depending on the source. Labor for installation at a body shop typically costs between $200 and $500.
| Part Source | Estimated Price Range |
|---|---|
| New OEM | $200 - $290 |
| New Aftermarket | $120 - $220 |
| Used OEM | $75 - $150 |
| Shop Labor | $200 - $500 |
Technical Specifications and Part Numbers
This rear bumper impact bar is made of steel and is a direct fit for all specified vehicles.
- Primary OEM Part Number: 22806745
- Superseded Part Numbers: 20849951, 15905567, 15939134, 20794096, 20820606, 22768198, 25841862, 25876147, 25913328
- Required Spring Nut: 11610645 (2 required)
Frequently Asked Questions (FAQ)
Can I drive my vehicle with a damaged rear bumper impact bar?
While the vehicle will still drive, it is not recommended. A damaged impact bar offers significantly reduced protection in a rear-end collision, increasing the risk of serious damage and injury in another accident. It is a critical safety component that should be replaced promptly.
Is a cheap aftermarket impact bar a safe option?
It can be a gamble. Aftermarket parts are not held to the same standards as OEM parts and may use lighter gauge steel or different construction methods. For a critical safety item, a straight, undamaged used OEM part is generally considered a safer choice than a new, low-cost aftermarket part.
Do I need to paint the replacement impact bar?
No. The impact bar is not a cosmetic part and is hidden behind the plastic bumper cover. Both new and used OEM bars typically come with a protective black coating to prevent rust, which is sufficient.
Will this part fit all trim levels of the Acadia, Enclave, Traverse, and Outlook?
Yes. The rear bumper reinforcement is the same across all trim levels (e.g., LS, LT, SLT, Denali, CX, CXL, XE, XR) for the specified model years.
Technical Specifications
OEM Part Numbers: 22806745 20849951 15905567 15939134 20794096 20820606 22768198 25841862 25876147 25913328
Material: Steel
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- GMC Acadia:
- Buick Enclave:
- Chevrolet Traverse:
- Saturn Outlook: