2023-2025 Chevy Colorado and GMC Canyon Coolant Leaks: A Pattern We’re Investigating

Class Action Investigation

Updated on January 21st, 2026 Author: Sergei Lemberg

Lemberg Law is currently conducting a class action investigation into recurring coolant leaks affecting 2023, 2024, and 2025 Chevrolet Colorado and GMC Canyon trucks.

When I began reviewing owner complaints, I expected to find at least some manufacturer guidance addressing the issue. Instead, I found the same defect being reported repeatedly, with no technical service bulletin, no recall, and no formal explanation from the manufacturer. Owners were describing coolant loss at the upper radiator hose connection, failures of the quick-connect sealing ring, and replacement parts that were already backordered.

I am Sergei Lemberg, and for more than twenty years I have investigated vehicle and consumer product defects through warranty and lemon law litigation. In my experience, isolated failures are rarely the story. Patterns are. And when the same component fails in the same way across model years, platforms, and owners, it deserves careful scrutiny.

That pattern is what led us to open this investigation into the Colorado and Canyon cooling system complaints.

Hundreds of Coolant Leak Reports

Nearly every complaint I reviewed points to the same location in the cooling system: the upper radiator hose where it connects to the radiator. Owners consistently describe leaks at the quick-connect fitting, failure of the sealing O-ring or gasket, and coolant escaping directly from the coupling area.

Owners commonly report the following symptoms:

• Coolant leaking from the upper radiator hose connection
• Visible antifreeze around the quick-connect fitting
• Sudden coolant loss with no warning light beforehand
• Gurgling or rushing fluid sounds in the cooling system
• Repeated leaks after dealer repair
• Engine temperature concerns or overheating risk
• Replacement parts listed as backordered

What Owners Are Saying

Here are a few examples I found in my research:

• Clicking noise from the rear axle when driving, particularly noticeable at lower speeds or during acceleration
• Rattling sound from the wheel cap area, often discovered during routine maintenance like oil changes or tire rotations
• Violent jerking or hesitation when pressing the accelerator, especially at highway speeds
• Sudden loss of drive power in two-wheel drive mode, forcing drivers to engage four-wheel drive to continue moving
• Vehicle rollaway incidents when parked on an incline without the parking brake engaged
• Complete rear axle failure requiring both left and right axle shaft assemblies to be replaced
• Warning lights including “Service Now” and “Service Rear Differential” messages appearing even after repair attempts

Owner Complaint Examples

Here’s what actual F-150 owners reported to the National Highway Traffic Safety Administration:

“Upper radiator hose leaks where it connects to radiator. 40k miles and my truck has no coolant”

“The upper radiator hose and gasket on numerous Colorado and Canyon trucks have failed prematurely. Mine has failed at 31k miles. Radiator hose leaks can cause engine overheating and failures while on roadways. Additional issues of leaking coolant on roadways and into the environment. Vehicle is scheduled to be viewed by dealership. Symptom which lead to diagnosing problems included rushing fluid sounds as air was introduced to the coolant line as well as an observable leak on the driver side where the radiator hose connects to the radiator.”

“Visibly observed antifreeze / coolant leaking from top radiator hose where it connects to the radiator. Dealer replaced upper radiator o-ring but it’s still leaking.”

Is There a Recall or TSB for the Coolant Leak?

As of now, there is no public recall or technical service bulletin specifically addressing the upper radiator hose quick-connect fitting on the 2023–2025 Colorado and Canyon platforms. Yet the consistent parts backorders strongly suggest that the issue is already known within the manufacturer’s service and supply chain channels, even if it has not been formally acknowledged to consumers.

What You Can Do If You Own an Affected Truck

If you own a 2023–2025 Colorado or Canyon and experience coolant loss or hose leaks, consider:

• Documenting all leaks with photos and videos.
• Keeping repair orders, invoices, and dealership notes.
• Recording mileage and dates of each failure.
• Requesting written confirmation of backordered parts.
• Checking coolant levels regularly.
• Reporting safety concerns to NHTSA.

Get a Free Case Evaluation

Lemberg Law is reviewing these coolant leak complaints as part of an ongoing class action investigation, while also evaluating whether individual owners may have separate warranty or lemon law claims.

If your Chevy Colorado or GMC Canyon has experienced coolant leaks at the upper radiator hose, repeated repairs, or unresolved backorder delays, you may be eligible for a free case evaluation.

There is no cost to speak with us. We work on a contingency-fee basis, which means you pay nothing unless we recover compensation. There is no obligation, no pressure, and no guarantee of any legal outcome.

This investigation is ongoing. And as more owners come forward, the picture continues to become clearer — one coolant leak at a time.

Sources:

1. 2023 Canyon Complaints
2. 2024 Canyon Complaints
3. 2025 Canyon Complaints
4. 2023 Colorado Complaints
5. 2024 Colorado Complaints
6. 2025 Colorado Complaints

About the Author:

Sergei Lemberg is an attorney focusing on consumer law, class actions related to automotive issues, and personal injury litigation. With nearly two decades of experience, his areas of practice include Lemon Law (vehicle defects), Debt Collection Harassment, TCPA (illegal robocalls and texts), Fair Credit Reporting Act, Overtime claims, Personal Injury cases, and Class Actions. He has consistently been recognized as the nation's "most active consumer attorney." In 2020, Mr. Lemberg represented Noah Duguid before the United States Supreme Court in the landmark case Duguid v. Facebook. He is also the author of "Defanging Debt Collectors," a guide that empowers consumers to fight back against debt collectors and prevail, as well as "Lemon Law 101: The Laws That Lemon Dealers Don't Want You to Know."

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