Looking to customize your GMC truck or SUV in St. Louis? Dave Sinclair Customs specializes in full custom builds, chrome deletes, wheel and tire upgrades, lift kits, lighting, and a la carte customizing. Whether you buy it here or bring your own, our team makes the process simple with clear communication, expert guidance, and builds designed around your vision. From GMC Sierra 1500 and HD trucks to Yukon Denali SUVs, every detail is handled with care so your vehicle looks the way it should.