2014–2018 GMC Sierra Car Stereo, Speaker & Dash Kit Fitment
A 2014–2018 GMC Sierra accepts a single- or double-DIN aftermarket stereo using a Metra dash kit, and steering-wheel controls are kept with a plug-and-play harness. Front and rear door speakers are 6.5" (in a 6.75" location). Bose SLT/Denali trims add a factory amp that needs a bypass or retention harness.
2014–2018 GMC Sierra fitment at a glance
| Factory stereo / aftermarket fit | Single or Double DIN with a Metra dash kit (factory 4.2"/8" IntelliLink screen replaced) |
|---|---|
| Front speaker size | 6.5" (mounts in a 6.75" door location) |
| Rear speaker size | 6.5" (mounts in a 6.75" door location) |
| Factory amplifier | Bose-equipped trims (SLT/Denali) use a factory amp — bypass or retain it with the right harness/interface |
| Steering-wheel controls | Yes — retained with a plug-and-play harness |
| Typical install time | 1–2 hours for a head-unit + dash kit |
| DIY difficulty | Intermediate DIY (or installed at our Chilliwack shop) |
Door speakers are commonly 6.5" drivers that drop into the factory 6.75" mounting location, so a 6.5" with a bracket is the safe choice front and rear. Bose-equipped SLT and Denali trucks run a factory amp (behind the rear seat) — confirm your trim with us and we'll match the right amp-bypass or amp-retention harness so you keep full output.
The K2XX GMC Sierra is a clean, modern truck to upgrade — the factory IntelliLink dash pops out and accepts a single- or double-DIN aftermarket stereo with the correct Metra kit, so Apple CarPlay or Android Auto drops straight in. The one thing to check is your trim: base trucks wire straight through, while Bose-equipped SLT and Denali models run a factory amp that needs the right bypass or retention harness. Below are the exact dash kits and harnesses we stock for the '14–'18 Sierra — or have our Chilliwack techs do the whole job.
The exact parts that fit your GMC Sierra
These are the dash kits and wiring harnesses we stock for the 2014–2018 GMC Sierra. Pair any with a head unit below — it’s plug-and-play, no cutting.
Dash Kits (turns the dash opening into a single/double-DIN slot)
Wiring Harnesses (plug-and-play — no soldering)
Vehicle-Specific Accessories
Now pick your upgrade
Apple CarPlay / Android Auto receivers that drop into the dash kit above.
Shop head units →Upgrade the factory speakers while the door panels are off — biggest sound-per-dollar.
Shop speakers →Add real low-end. We’ll point you to a sub + amp that fits the GMC Sierra.
Shop bass →Don’t want to DIY? We install it.
Order the kit online, or have our certified techs install your GMC Sierra stereo, speakers or sound system at our Chilliwack shop. Drivers come in from across the Fraser Valley & Greater Vancouver.
2014–2018 GMC Sierra stereo upgrade — FAQ
What size speakers fit a 2014–2018 GMC Sierra?
The front and rear doors take 6.5" speakers. The factory location is closer to 6.75", so a 6.5" speaker with the correct mounting bracket is the clean, safe fit front and rear. If your Sierra has the Bose system, the door speakers are amplified — we'll set you up with speakers that match. Not sure on the bracket? We'll include the right one.
Can I put a double DIN / Apple CarPlay stereo in my Sierra?
Yes. With the Metra 99-3014G dash kit, a '14–'18 Sierra takes a full double-DIN CarPlay / Android Auto receiver, replacing the factory 4.2" or 8" IntelliLink screen with an OEM-style finish. Want a large floating display instead? The 108-GM1G kit is built for a Pioneer 8" screen.
Will I lose my steering-wheel controls or backup camera?
No. A plug-and-play harness keeps your steering-wheel controls working, and a compatible head unit retains the factory backup camera. On Bose-equipped SLT and Denali trucks the factory amp lives behind the rear seat — we use the Metra 70-2057 amp-bypass harness, or an iDatalink Maestro interface, so you keep full sound and the dash chimes.
What dash kit do I need for a (2014–2018) Sierra?
For a standard single- or double-DIN stereo, the Metra 99-3014G (gunmetal grey, '14–up) is the go-to. For a large Pioneer 8" floating-screen receiver, use the Metra 108-GM1G. Both are in stock above with live pricing, and both are built specifically for the '14–'18 Silverado/Sierra dash.
Can Audiomotivez install it?
Absolutely. We install GMC Sierras every week at our Chilliwack shop, with customers driving in from across the Fraser Valley — Abbotsford, Mission, Langley and Greater Vancouver. Order the kit online for DIY, or book an install — call 604-792-4070.