The 2015–2020 Suburban uses the same key setup, so everything on this page applies to those years too. The full picture is on the Chevrolet Suburban key guide.

2018 Chevrolet Suburban: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: 46E (Hitag2 Extended)
Programming: OBD
All keys lost: We can originate new keys on site

HYQ1AA-family proximity fob; push-button start standard on most retail trims. Base LS and fleet/police (PPV) units are reported with a keyed ignition and 46E flip key — push-to-start did not become standard on the PPV until 2021 — so we confirm per vehicle.

Same key system as the 2015–2020 Suburban

Chevrolet kept the Suburban's key system unchanged across 2015–2020, so everything about replacing a 2018 key — blanks, programming, and what happens if every key is lost — matches the rest of that run. The full year-by-year breakdown lives in our Chevrolet Suburban key guide.

What drives the price is the key type, whether you still have a working key, and where the car is parked. There's more on Chevrolet programming in general on our Chevrolet key page.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.

2018 Chevrolet Suburban key replacement

2018 Chevrolet Suburban: key facts

Same key system as the 2015–2020 Suburban

We cover all these cities