The XL is meant for those who just need a basic work truck. It comes standard with air-conditioning, plain vinyl upholstery, an AM/FM radio, 17-inch wheels and manual trailer-tow mirrors. The XLT adds chrome wheels, keyless entry, power and heated trailer tow mirrors, an integrated trailer brake controller, privacy glass, cloth upholstery, an auxiliary audio jack, a 40/20/40 front bench, a CD player, cruise control and full power accessories. The FX4 provides upgraded off-road hardware, including skid plates, heavy-duty shock absorbers, a limited-slip rear axle and a manual-shift transfer case. It also adds front bucket seats, a power driver seat, power telescoping and folding mirrors and satellite radio. High-line Lariats come with luxuries like 18-inch alloy wheels, running boards, a power-sliding rear window, leather upholstery, dual power and heated front seats (power driver seat only on regular cab), the Sync multimedia voice-control system and dual-zone automatic climate control. Much of the Lariats extra equipment can be added to the FX4 via optional packages.