GMC 2006 Sierra - Manual (Page 482)

Taillamps (Chassis Cab Models)
A. Turn Signal Lamp
B. Taillamp/Stoplamp
C. Back-up Lamp
To replace one of these bulbs, do the following:
1. Peel the rubber seal away from the lens using
your hands.
2. Lift the lens off the lamp assembly.
3. Pull the old bulb straight out from the socket.
4. Install a new bulb into the socket and press it in
until it is tight.
5. Reinstall the lens and the lens seal.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 3157
Back-up Lamp* 1156
Cargo Lamp and Center
High-Mounted Stoplamp (CHMSL)
912
Daytime Running Lamps (DRL) 4114K
Fender Marker, Front Roof Marker
and Sidemarker Lamp (If Equipped)
194
Front Parking and Turn Lamp 3457A
Headlamps
High-Beam 9005
Low-Beam 9006
Rear Marker Lamp, Taillamp and
Stoplamp*
3157
Rear Turn Signal Lamp 3157
Rear Turn Signal Lamp* 1156
Stoplamp and Taillamp* 1157
* Chassis Cab Models
For replacement bulbs not listed here, contact your
dealer.
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