Control Arm 2012 GMC Traverse Front Suspension Part Numbers: Complete Guide

If you need to replace a front control arm on a 2012 GMC Traverse, getting the right part number is essential. The control arm connects the wheel hub to the vehicle's frame and allows for smooth up-and-down movement of the suspension. A worn or damaged control arm can cause clunking noises, uneven tire wear, and poor steering response. This article provides the specific GM and aftermarket part numbers for the front lower control arms on the 2012 Traverse, along with guidance on choosing between OEM and aftermarket options.

OEM Control Arm Part Numbers for 2012 GMC Traverse

General Motors offers several original equipment (OEM) part numbers for the front lower control arm on the 2012 Traverse. The correct number depends on whether you need the left (driver) or right (passenger) side, and whether you have a standard suspension or the optional sport-tuned suspension (often found on models with 20-inch wheels).

Left Front Lower Control Arm

• GM Part Number: 25910871 – This is the left lower control arm without the ball joint. It fits all 2012 Traverse models with standard suspension.
• GM Part Number: 25910873 – Left lower control arm for models with sport suspension (VIN code Z or option FE3).

Right Front Lower Control Arm

• GM Part Number: 25910872 – Right lower control arm without ball joint, standard suspension.
• GM Part Number: 25910874 – Right lower control arm for sport suspension.

These OEM numbers include the control arm casting and bushings but do not include the ball joint. The ball joint must be purchased separately if needed. GM also offers complete assemblies with the ball joint pre-installed:

• Left Complete Assembly: 25910877 – Standard suspension.
• Right Complete Assembly: 25910878 – Standard suspension.
• Sport suspension assemblies: 25910879 (left) and 25910880 (right).

Aftermarket Control Arm Part Numbers

Aftermarket manufacturers produce control arms that match or exceed OEM specifications at a lower cost. Popular brands include Moog, AC Delco (GM's aftermarket division), Dorman, and TRW. When choosing aftermarket, verify that the part fits a 2012 Traverse with your specific suspension type.

Moog

• Moog RK80728 – Left front lower control arm (standard suspension)
• Moog RK80729 – Right front lower control arm (standard suspension)
• Moog RK80730 – Left front lower control arm (sport suspension)
• Moog RK80731 – Right front lower control arm (sport suspension) Moog control arms often include upgraded bushings and a greasable ball joint for longer service life.

AC Delco

• AC Delco 45G1200 – Left front lower control arm (standard)
• AC Delco 45G1201 – Right front lower control arm (standard)
• AC Delco 45G1202 – Left front lower control arm (sport)
• AC Delco 45G1203 – Right front lower control arm (sport) AC Delco is the official GM aftermarket brand, so these parts match the original design closely.

Dorman

• Dorman 524-001 – Left front lower control arm (standard)
• Dorman 524-002 – Right front lower control arm (standard) Dorman parts are often more budget-friendly but may not include ball joints. Check the product description carefully.

Left vs Right: How to Tell Which Side You Need

To determine the correct side, stand in front of the vehicle facing the engine. The left control arm is on the driver's side. The right control arm is on the passenger's side. If you're replacing only one side, always replace the opposite side if the mileage is high or wear is similar. Uneven control arms can cause alignment issues.

Standard vs Sport Suspension: How to Identify Yours

The 2012 GMC Traverse came with two suspension setups. The standard suspension is found on most LS, LT, and LTZ trims. The sport suspension (RPO code FE3) was optional on LTZ and sometimes on LT models. Look for a sticker in the glove box or driver's door jamb with RPO codes. If you see "FE3" listed, you have sport suspension. Also, models with 20-inch wheels often have the sport suspension. If unsure, use the VIN to consult a dealership.

Complete Assembly vs Control Arm Only

Control arms are sold either as the bare arm (no ball joint) or as a complete assembly with the ball joint pre-installed. If your ball joint is still good, you can save money by buying just the arm and pressing in a new ball joint. However, many shops and DIYers prefer complete assemblies because they are easier to install and ensure the ball joint is also replaced. Moog and AC Delco complete assemblies come with the ball joint already installed.

Cost Comparison

• OEM control arm (arm only): $80–$120 per side
• OEM complete assembly: $150–$200 per side
• Aftermarket arm only: $50–$90 per side
• Aftermarket complete assembly: $100–$160 per side Prices vary by retailer and brand. Keep in mind that ball joints add $30–$60 each.

Installation Tips

Replacing a front control arm on a 2012 Traverse is a moderate DIY job, but it requires proper tools: a ball joint press, torque wrench, jack stands, and penetrating oil. The control arm bolts are often seized; apply penetrating oil the day before. After installation, a professional alignment is strongly recommended. If you hear clunking after replacement, check that all bolts are torqued to spec: 140 ft-lbs for the frame bolts and 60 ft-lbs for the ball joint nut (plus use a cotter pin).

Final Recommendation

For most owners, the best choice is an aftermarket complete assembly from Moog or AC Delco. These parts match OEM quality, often have better grease retention, and come with the ball joint installed, saving labor. If you want to stick with genuine GM parts, order the OEM complete assembly number for your side and suspension type. Avoid no-name brands that may use inferior bushings or wrong geometry. Always confirm the part number with your VIN before purchasing. Replacing both sides together (even if only one is bad) will give you the best ride and alignment stability.

Proper part selection ensures a safe, durable repair. Use the numbers above to order the correct control arm for your 2012 GMC Traverse front suspension.