FE2 Suspension Part Numbers: Complete Guide to Identifying and Ordering

If you own a General Motors truck or SUV equipped with the FE2 suspension package, you may have encountered the challenge of ordering replacement parts. The FE2 code refers to a specific heavy-duty suspension configuration found on models like the Chevrolet Silverado 1500, GMC Sierra 1500, Tahoe, Suburban, and Yukon. This package typically includes higher-capacity springs, dampers, and stabilizer bars designed for towing and off-road comfort. However, identifying the correct part numbers can be confusing because FE2 parts vary by model year, engine size, and even cab configuration. This guide breaks down what FE2 suspension part numbers mean, how to decode them, and how to ensure you order the right components for your vehicle.

What Is FE2 Suspension?

FE2 is a GM RPO (Regular Production Option) code that designates a "Handling/Trailering Suspension" package. It is one of several suspension codes available for full-size GM trucks and SUVs. The FE2 package includes:

• Stiffer front and rear coil springs or leaf springs
• Heavy-duty shock absorbers with increased damping
• Thicker front and rear stabilizer bars
• Sometimes upgraded jounce bumpers and suspension knuckles

The goal of FE2 is to improve load-carrying capacity, reduce body roll when towing, and provide a stable ride with a loaded trailer. It is not the same as the Z71 off-road package (which also includes skid plates and different shocks) or the standard FE1 suspension. Knowing your vehicle’s RPO codes is the first step to getting the right parts.

How to Decode FE2 Suspension Part Numbers

GM part numbers for FE2 suspension components typically follow an 8-digit or 10-digit format, but they can be split into three categories:

1. RPO Code Identification

Every GM vehicle has a service parts identification label (usually in the glove box or inside the driver’s door jamb) that lists all RPO codes. Look for "FE2" on that sticker. If you don’t see it, your truck may have a different suspension package. Cross-reference the VIN with a GM parts database online to confirm.

2. Part Number Prefixes and Suffixes

GM part numbers for suspension often start with a prefix like "15062355" or "22187216." The first four digits usually indicate the system (e.g., 1506 = front suspension, 2218 = rear suspension). The remaining digits specify the exact design, including spring rate, shock length, and mounting style. Suffixes may indicate revisions (e.g., A, B, C) – always use the highest revision unless superseded.

3. Model Year and Engine Size

FE2 part numbers differ between 2007-2013 and 2014+ models due to platform changes (GMT900 vs. K2XX). Also, the 5.3L V8 and 6.2L V8 engines often use different spring rates because of weight differences. Always verify your truck’s GVWR (Gross Vehicle Weight Rating) and engine code before ordering.

Common FE2 Suspension Part Numbers by Vehicle Model

While part numbers change frequently, here are some representative FE2 part numbers for popular GM trucks. Note: These are examples; always confirm with a dealership or OEM parts lookup.

Chevrolet Silverado 1500 / GMC Sierra 1500 (2007-2013)

• Front Coil Spring: 15062355 (for 4WD, 5.3L)
• Front Shock Absorber: 22187216 (FE2 specific, includes mounting hardware)
• Rear Shock Absorber: 22187217
• Front Stabilizer Bar: 25931758 (32mm diameter)
• Rear Stabilizer Bar: 25931759

Chevrolet Silverado 1500 / GMC Sierra 1500 (2014-2018)

• Front Coil Spring: 84074743 (for 4WD, 5.3L)
• Front Shock Absorber: 84057982
• Rear Shock Absorber: 84057983
• Front Stabilizer Bar: 84076411 (35mm diameter)
• Rear Stabilizer Bar: 84076412

Chevrolet Tahoe / Suburban / GMC Yukon (2015-2020)

• Front Coil Spring: 84074749 (for 4WD)
• Front Shock Absorber: 84057984
• Rear Shock Absorber: 84057985
• Front Stabilizer Bar: 84076414
• Rear Stabilizer Bar: 84076415

Heavy-Duty or Max Trailering Package

If your truck has the Max Trailering Package (RPO code NHT), it may share FE2 components but with different part numbers. For instance, the rear stabilizer bar might be thicker: 84076416 for 2014-2018 Silverado 1500 with NHT.

Tips for Ordering the Correct FE2 Parts

1. Always use your VIN – The most reliable way to get the right FE2 part numbers is to enter your VIN on a GM parts website or give it to a dealership. Avoid relying solely on model year or trim.
2. Check supercessions – GM regularly updates part numbers. A part you find online may have been superseded by a newer number. Look for a "supersedes" note.
3. Verify spring codes – If ordering springs, count the number of coils and measure wire diameter. FE2 springs are often painted with a color code (e.g., purple, orange). Match those colors to the original.
4. Beware of aftermarket equivalents – Aftermarket brands like Monroe, KYB, or Moog offer "FE2-specific" shocks and struts. However, their part numbers usually differ from OEM. Use an aftermarket lookup tool designed for FE2 to cross-reference.
5. Consider buying a complete kit – Some GM dealerships sell FE2 suspension kit packages that include all four shocks, springs, and stabilizer bar bushings. These kits have a single part number and ensure compatibility.

Practical Recommendation

For most DIY owners, the safest approach is to obtain your vehicle’s VIN and order FE2 suspension parts directly from a GM dealer or a reputable wholesale OEM parts supplier. If you prefer aftermarket, stick with brands that explicitly list FE2 compatibility in their catalog. Avoid generic "fits all" components – FE2 is specific, and using the wrong part can result in a harsher ride or poor towing stability.

If you need to replace only one component (e.g., a single shock), replace them in pairs (front or rear) to maintain balance. And always tighten all fasteners to the manufacturer’s torque specifications. Keeping your FE2 suspension in good condition ensures your truck handles as designed, whether you're hauling a trailer or navigating rough roads.