Size4Me 65 › fit in › GMC Sierra 1500 Crew Cab

Will the Graco Size4Me 65 fit in a 2019–2024 GMC Sierra 1500 Crew Cab?

Yes — the Graco Size4Me 65 fits a 2019–2024 GMC Sierra 1500 Crew Cab.
The Size4Me 65 is about 19" wide; the Sierra 1500 Crew Cab's usable rear bench is about 56". It fits one rear position comfortably. Three across is tight (57" needed vs 56").

19"Size4Me 65 width

56"Sierra 1500 Crew Cab rear bench

Tightthree across

★★★★☆NHTSA Ease-of-Use

Check the Size4Me 65 on Amazon → All seats for a Sierra 1500 Crew Cab

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What fits this Sierra 1500 Crew Cab

One seat, rear position: Yes. The Size4Me 65 installs in an outboard rear position of a 2019–2024 GMC Sierra 1500 Crew Cab with room to spare.
Three across: Tight — three need ~57" against only ~56". A narrower seat is the better bet.
Modes this seat covers: rear-facing → forward-facing.
LATCH: lower anchors up to 50 lb; the Sierra 1500 Crew Cab has 3 lower-anchor positions.

ℹ️ Informational only — built from NHTSA public car-seat ratings and published seat/vehicle dimensions. This is not a safety certification and not a substitute for the seat and vehicle manuals. Always confirm the fit and install yourself before every trip. The Size4Me 65's width (Graco published spec) and the Sierra 1500 Crew Cab's rear-bench width (Typical for pickup — crew cab — approximate, verify install in your vehicle) are both approximate — confirm with a test-fit before buying.

Common questions

Will the Graco Size4Me 65 fit in a 2019–2024 GMC Sierra 1500 Crew Cab?

Yes — the Graco Size4Me 65 (19" wide) fits a single rear seating position in a 2019–2024 GMC Sierra 1500 Crew Cab. Three across is tight — its rear bench is about 56" and three of these would need 57".

Can you fit three Size4Me 65s across a Sierra 1500 Crew Cab?

Probably not — three Size4Me 65s need about 57" but the Sierra 1500 Crew Cab's usable bench is only about 56". Consider a narrower seat — see our narrowest-seats guide.

Sources: seat ratings & modes — NHTSA (pulled 2026-06-18); dimensions — manufacturer specs and owner measurements. Informational only — built from NHTSA public car-seat ratings and published seat/vehicle dimensions. This is not a safety certification and not a substitute for the seat and vehicle manuals. Always confirm the fit and install yourself before every trip.