2021 Chevrolet Suburban Wiper Sizes, Bulb Sizes & Tire Sizes

Last reviewed September 30, 2026

The short answer

The 2021 Chevrolet Suburban takes 22" driver and 22" passenger wiper blades (rear 12"), has sealed LED headlights with no replaceable low-beam bulb, and rides on 265/65R18 tires as standard (LS, LT); Z71 and Premier and LS with 20-in. wheels and LT with 20-in. wheels use 275/60R20, RST and High Country and Premier with 22-in. wheels use 275/50R22.

Wiper blade sizes

Driver side 22" · OEM 84278338 Shop on Amazon
Passenger side 22" · OEM 84278338 Shop on Amazon
Rear 12" · OEM 84215609 Shop on Amazon

Tire sizes by trim

LS, LT (standard) 265/65R18 See tires at Amazon
Z71, Premier, LS with 20-in. wheels, LT with 20-in. wheels 275/60R20 See tires at Amazon
RST, High Country, Premier with 22-in. wheels 275/50R22 See tires at Amazon

The size on the placard inside the driver's door jamb is the one your car left the factory with. Match that, not this table, if they differ; a previous owner may have changed wheels.

Bulb sizes

Low beam Sealed LED, no replaceable bulb
High beam Sealed LED, no replaceable bulb
Daytime running Sealed LED, no replaceable bulb

Wheel specs and lug torque

Bolt pattern 6x139.7 mm (6x5.5")
Lug seat cone
Lug nut torque 140 ft-lbs (190 Nm)

Key fob, battery and sensors

Replacement fob FCC ID YG0G21TB2 · smart key Shop on Amazon
Frequency 433 MHz
Relearn auto (after 20 minutes parked, drive 10 minutes above 12 mph)

Roof rack and roof load

Roof load limit 220 lb (100 kg), evenly spread, while driving
Rack mounting Raised side rails Shop crossbars on Amazon

Dimensions, weight and fuel

Length 225.7" (573 cm)
Width 81.1" (206 cm)
Height 75.7" (192 cm)
Wheelbase 134.1" (341 cm)
Fuel Gasoline
Octane 87 (regular)
Fuel tank 28 gal (106 L)

Worth knowing about the 2021 Suburban

  • Wipers. The front arms use a push-button (PTB) connector, so choose blades listed for this model, and some fit guides list an 11-inch rear blade where GM specifies 12 inches.
  • LED lighting. The low beam, high beam, daytime running are sealed LED units with no user-replaceable bulb. A failure means replacing the assembly.
  • Bulbs. The base-level taillamp takes replaceable stop, turn and back-up bulbs that the manual does not name; uplevel taillamps are LED.
  • Spare. This vehicle carries a full-size spare.
  • Tire chains. The manual permits chains or cables, on the drive wheels only, fitted to the standard tire size. Chains for this size on Amazon →
  • Tires. Chains may go on the rear axle only on sizes other than 275/60R20 and 275/50R22, which the manual says lack clearance.
  • Torque. Tighten lug nuts to 140 ft-lbs in a star pattern with a torque wrench, and re-check after the first 50 miles. This figure is from the owner's manual; an impact gun will overshoot it.
  • Key fob. Match the FCC ID (YG0G21TB2) printed on the back of your fob when buying a replacement; the same car can use two fob designs in one year. A new fob still needs programming to the car.
  • Key fob. The manual names a CR2032 but locksmith catalogs list a CR2450 for this fob, so check the cell in yours before buying.
  • Roof load. The 220 lb roof limit is the dynamic figure for driving and includes the rack itself. It is not a limit for a rooftop tent when parked; the manual gives no static figure.
  • Fuel. For the 6.2L V8 the manual highly recommends 93 octane, and the 3.0L Duramax diesel uses diesel fuel.