This technical bulletin provides a procedure to lube the rear leaf springs on vehicles with the condition of a squeak noise originating from the rear of the vehicle.
full bulletin at NHTSA ↗2011 GMC Sierra suspension problems
moderate Owners of the 2011 GMC Sierra have filed 11 NHTSA complaints about the suspension at roughly $900 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See suspension across all vehicles →
Complaints
11
Recalls
0
Avg fix
$900
| Model year | suspension complaints |
|---|---|
| 2007 Sierra | 11 |
| 2008 Sierra | 4 |
| 2009 Sierra | 5 |
| 2010 Sierra | 4 |
| 2011 Sierra (this page) | 11 |
| 2013 Sierra | 10 |
| 2014 Sierra | 23 |
| 2015 Sierra | 15 |
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering suspension on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME 2011-2012 TRUCKS, A GRINDING NOISE AND VIBRATION WOULD BE NOTICEABLE DUE TO THE REAR AXLE RIGHT HAND SIDE BEARING ADJUSTER CLIP AND BOLT MAY COME LOOSE INSIDE OF REAR AXLE. UPDATED 9/6/12. UPDATED 7/18/14. UPDATED 11/6/15.
full bulletin at NHTSA ↗This technical bulletin provides repair information for the re-torque of leaf spring bolts to correct a customer concern for a clunking noise coming from the rear of the vehicle.
full bulletin at NHTSA ↗This preliminary informational bulletin provides a diagnostic tip that may be helpful in correcting a customer concern on a vibration, shudder or roughness while driving at low speeds with a steady throttle on a level road.
full bulletin at NHTSA ↗This technical bulletin provides repair information for the re-torque of leaf spring bolts to correct a customer concern for a clunking noise coming from the rear of the vehicle.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report multiple distinct suspension and structural failures in the 2011 GMC Sierra. Shock absorbers leak internally at 70,000 km—less than three years of normal-condition driving—but dealers deny warranty coverage, calling them consumable parts. Leaf springs fracture in the rear, with pieces breaking off and bending excessively; one owner says seven identical trucks have the same problem, and GM denies warranty action. The rear axle cross pins fail at 35,000 miles, allowing rear wheels to shift; the pinion gear shaft fractures, creating rear noise; both occur past warranty or without recall coverage.
Frame corrosion is the most serious issue. Factory undercoating flakes away within 2–3 years, exposing bare metal across the entire frame structure. Multiple owners describe severe rust in the driver-side door area extending past the fuel tank, on the passenger side, and throughout all frame sections. Corrosion creates cracks and gaps up to half an inch wide. One owner at 12,000 miles reports rapid corrosion despite mint condition inside and out; another at 105,000 miles says the dealership called the truck "basically junk." GM explicitly denies warranty coverage for rust. One owner also reports the rear shock mount rusting completely through the frame cross member, forcing the shock against the truck bed.
Same GMC Sierra suspension reports on nearby years: 2013 · 2014
Failure modes owners describe
Shock absorber leakage
Shock absorbers leak fluid internally, rendering them inoperable. Occurs early in vehicle life under normal driving conditions (70,000 km / ~3 years). Dealers deny coverage as consumable parts despite premature failure.
When: 70,000 km (~43,000 miles), within 3 years of purchase
Symptoms owners cite: Oil traces on vehicle underside (front driver side noted); Loss of suspension damping
Repairs/costs cited: Owner replaced with four aftermarket shocks; no further problems. OEM shocks refused under warranty by dealer.
Recalls/TSBs owners mention: Warranty claim denied; classified as consumable parts.
Leaf spring fracture and deformation
Leaf springs break, with sections separating from the assembly. Breakage occurs in both rear springs, and broken springs begin to bend excessively. Owner reports 7 other identical trucks with same issue; GM has not implemented a fix.
When: Not specified; reported by owner with multiple friends experiencing same failure
Symptoms owners cite: Piece of leaf spring broken off; Remaining springs bending excessively; Pieces missing from both sides of truck; Risk of rear suspension collapse
Repairs/costs cited: No repair completed; GM advised it could have been purchased in this condition. Owner warns if hit hard enough, truck rear end could separate.
Recalls/TSBs owners mention: GM stated part could have shipped in defective condition; no warranty action or recall initiated despite multiple complaints.
Rear pinion gear shaft fracture
The shaft on the pinion gear in the rear axle assembly fractures, creating audible noise during driving. Repair performed after warranty expiration.
When: 126,000 miles
Symptoms owners cite: Abnormal noise from rear of vehicle at various speeds
Repairs/costs cited: Repaired by independent mechanic; specific repair cost not stated.
Recalls/TSBs owners mention: Manufacturer contacted; refused action citing expired warranty.
Rear axle cross pin failure
Rear axle cross pins fracture or fail completely, allowing rear wheels to shift position. Occurs early in vehicle service life (35,000 miles). Manufacturer denies linkage to recall campaign 11V007000.
When: 35,000 miles
Symptoms owners cite: Abnormal sound from rear; Rear tires moving on axle (cross pin failure causes movement)
Repairs/costs cited: Vehicle not taken to dealer for repair; owner may not have pursued claim.
Recalls/TSBs owners mention: Manufacturer stated vehicle not included in NHTSA campaign 11V007000 (Suspension).
Frame corrosion and undercoating failure
Factory undercoating flakes away prematurely, exposing bare metal frame to rapid corrosion across all sections. Corrosion becomes severe enough to compromise structural integrity within 2-3 years of ownership. Multiple owners report identical issue; this is a systemic defect in either coating application or base metal quality.
When: Within 2–3 years of purchase; one owner at 12,000 miles; another at 105,000 miles over 12 years
Symptoms owners cite: Undercoating flaking off in all frame sections; Bare metal exposed throughout frame; Deep corrosion in driver-side door area extending past fuel tank; Corrosion on passenger side as well; Multiple frame cracks and holes; Frame gaps up to half-inch wide and 6 inches long
Repairs/costs cited: Frame replacement recommended; vehicle deemed scrap in some cases. One owner reports dealership saying truck is 'basically junk.' No repairs completed by manufacturer.
Recalls/TSBs owners mention: GM Certified Pre-Owned warranty explicitly excludes rust damage. Warranty claim denied. No recall or service bulletin issued despite many complaints filed.
Rear shock mount corrosion through frame cross member
Shock absorber mounting point on frame cross member rusts through completely. This creates a dangerous condition where the top of the shock is forced against the truck bed, compromising suspension geometry and damping.
When: Not specified
Symptoms owners cite: Rust perforation through shock mounting area; Shock top forced against truck bed; Suspension geometry compromised
Repairs/costs cited: No repair action taken by owner; issue noted for inspection.
Poor suspension compliance and clunking
Early-life suspension becomes excessively stiff and develops loud clunking or bell-gong rattle when hitting potholes. Condition emerges within first year and deteriorates over time.
When: Within 600 miles; at 6,000 miles truck felt 10 years old
Symptoms owners cite: Suspension rides like a buckboard (extremely stiff); Loud clunking/bell-gong rattle over potholes; Problem worsens over time
Repairs/costs cited: Dealer inspection found no issues; problem persisted and worsened.
Recalls/TSBs owners mention: Dealer found nothing peculiar; no service or recall action taken.
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had suspension trouble with your 2011 GMC Sierra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the suspension problem on the 2011 GMC Sierra?
It's a documented issue but not catastrophic. 11 complaints have been filed. Repairs average $900 and most owners catch it before it causes a breakdown.
At what mileage does the suspension typically fail?
Based on the 11 complaints filed, suspension issues most often appear around 44,370 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $900 for suspension repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to suspension?
No active recalls currently cover suspension issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/GMC/Sierra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.