GM Extends Warranty for Coolant Leak Issue in Traverse, Acadia, and Enclave — But It’s Not a Recall

What’s the Problem

Owners of the Chevrolet Traverse, GMC Acadia, and Buick Enclave have been reporting coolant leaks tied to radiator hoses—particularly on newer model years.

These leaks appear to originate from defects in the cooling system hoses, sometimes leading to visible coolant pooling under the vehicle, low coolant warnings, or overheating concerns.

In some cases, even replacement hoses have reportedly failed shortly after installation, raising concerns about a systemic defect rather than isolated failures.

Allegations

The core issue appears to center on a defective radiator hose design or manufacturing flaw, particularly in newer-generation models.

Reports suggest:

  • Coolant leaks developing early in the vehicle’s life

  • Failures occurring at hose connection points or bends

  • Repeat failures even after dealership repairs

GM has acknowledged the issue enough to take action—but notably has not issued a recall.

Recall / TSB

Instead of a recall, General Motors has implemented a special extended warranty coverage for the affected vehicles.

Key details:

  • Coverage extended to 5 years or 60,000 miles

  • Applies specifically to radiator hose leak issues

  • Repairs are performed at no cost if the condition is confirmed

This is significant because coolant hoses are typically excluded from powertrain warranties, meaning owners would otherwise be on the hook after the standard 3-year/36,000-mile bumper-to-bumper period expires .

Symptoms

If you own one of these vehicles, watch for:

  • Coolant puddles under the front of the vehicle

  • Low coolant warning messages

  • Engine overheating or temperature fluctuations

  • Sweet smell of coolant after driving

  • Frequent need to top off coolant

These symptoms may appear early—sometimes within the first few thousand miles.

How to Proceed

  • Document Issues: Keep detailed records of all repairs and communications with the manufacturer. While at the dealership, ensure that all of your complaints are noted in the work order that you receive when you first drop off your vehicle.

  • Reasonable Number of Repair Attempts: While the law doesn't specify an exact number, generally, if the same problem persists after four or more repair attempts, or if the vehicle is out of service for more than 30 days cumulatively, it may qualify as a "lemon."

  • Monitor Symptoms: Any coolant loss, overheating, or warning lights? Stop driving immediately and seek inspection and let the dealership know.

  • Contact Valero Law: If repairs fail, or if you experience repeated issues, you may be entitled to relief under California law. Remedies can include a repurchase of the vehicle or a cash settlement.

Call Valero Law

If you’re dealing with repeated coolant leaks in your Chevrolet Traverse, GMC Acadia, or Buick Enclave, you may have more leverage than you think.

Even though GM has extended the warranty, that does not necessarily fix the underlying defect—and repeated repair attempts can still qualify your vehicle under California Lemon Law.

Call Valero Law for a free case evaluation. We handle these cases on a contingency basis, meaning there is no cost to you unless we win.

Joshua Valero