GMC 2010 Sierra - Manual (Page 529)

Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 3047 or 921
Back-up Lamp* 1156
Cargo Lamp and Center
High-Mounted Stoplamp (CHMSL)
912
Fender Marker W5WLL
High-Beam Headlamp 9005
Low-Beam Headlamp H11
License Plate Lamp 168
Stoplamp/Taillamp/Turn Signal Lamp 3047
Sidemarker Lamp 194
Stoplamp/Turn Signal Lamp/Taillamp* 1157
* Chassis Cab Models
For replacement bulbs not listed here, contact your
dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
or cracking. See Scheduled Maintenance on page 7‑3
for more information on wiper blade inspection.
Replacement blades come in different types and are
removed in different ways. Here is how to remove the
wiper blade:
1. Pull the windshield wiper arm connector away from
the windshield.
2. Squeeze the grooved areas on each side of the
blade and turn the blade assembly away from the
arm connector.
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