Graco says the defect happens when food or drinks get stuck in the buckles.
The company will send replacement buckles for free to customers who have registered their seats or who call the company's hotline (800-345-4109). They can also send an e-mail to consumerservicesgracobaby.com
Here are the seats involved in the recall:
Toddler convertible car seats (generally used for rear-facing infants under 30 lbs. and forward-facing toddlers up to 70 lbs. Smart Seat also converts to a booster for up to 100 lbs.)
Classic Ride 50
My Ride 65
My Ride 65 with Safety Surround
My Ride 70
Size 4 Me 70
Harnessed booster car seats (used for forward-facing toddlers between 20-100 lbs. Argos 70 also converts to a backless booster for up to 120 lbs.)
NHTSA says Graco should also recall an additional 1.8 million rear-facing infant seats with similar latches. Graco isn't recalling those seats, but will provide replacement buckles to those who request them. Those seats are:
Infant Safe Seat-Step 1
Snugride Click Connect 40.