2008 GMC Sierra 1500 Wiper Sizes, Bulb Sizes & Tire Sizes
The short answer
The 2008 GMC Sierra 1500 takes 22" driver and 22" passenger wiper blades, uses an H11 low-beam bulb, and came on P245/70R17, P265/70R17, P265/65R18 depending on trim.
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Wiper blade sizes
Driver side
22" Shop on Amazon
Passenger side
22" Shop on Amazon
Tire sizes by trim
Trim not confirmed
P245/70R17 Search Amazon for P245/70R17 tires
Trim not confirmed
P265/70R17 Search Amazon for P265/70R17 tires
Trim not confirmed
P265/65R18 Search Amazon for P265/65R18 tires
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
H11 Search Amazon for H11 bulbs
High beam
9005 Search Amazon for 9005 bulbs
Rear turn signal
3047 Search Amazon for 3047 bulbs
Brake light
3047 Search Amazon for 3047 bulbs
Tail light
3047 Search Amazon for 3047 bulbs
Reverse light
3047 Search Amazon for 3047 bulbs
License plate
168 Search Amazon for 168 bulbs
Wheel specs and lug torque
Lug nut torque
140 ft-lbs (190 Nm)
Key fob, battery and sensors
Key fob battery
CR2032 Search Amazon for CR2032
Relearn
tool (TPMS diagnostic tool, or the manual's air-pressure matching process)
Dimensions, weight and fuel
Fuel
Gasoline
Octane
87 (regular)
Fuel tank
26 gal (98 L)
Worth knowing about the 2008 Sierra 1500
- Wipers. The connector is left blank because only one parts listing names it.
- Bulbs. Positions left blank are ones where the owner's manual and the parts catalog did not name the same bulb.
- Tire chains. The manual permits tire chains or cables, within limits on which tires and which wheels. Those limits are in the next note; read them before you fit anything. Search Amazon for tire chains →
- Tires. The manual allows chains on the rear tires only and forbids them with P265/65R18 or P275/55R20 tires; the Denali book forbids chains outright.
- 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.
- TPMS. New sensors on this car will not pair on their own by driving; they need a relearn. Method: tool (TPMS diagnostic tool, or the manual's air-pressure matching process).
- Fuel. Long-box trucks hold 34 gallons, and the 2008 Sierra Denali manual recommends 91 octane for its 6.2L V8.