2009 GMC Sierra Denali Reverse Bulb Number
Hi there does anybody know what the replacement bulb number is for a 09 Sierra Denali reverse light says 921 online but recon and manual say 4057.
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Only 2 screws to take the tail lamp off just pull it off and check the bulb. Easiest way to know for sure.
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Sylvania bulb guide says reverse is 921 and the signal/brake are 4157NA
Edit to add Its still a good idea to check, I work in the shop for a living and I'd say at least 2/5 listings are wrong for everything ooooorrrr the parts guy at the last 3 shops is special with a capital "R" |
07-08 most were 3047 (AKA 4157)
09-10 most were 921 (AKA the large peanut bulb) 11+ they switched back to the 3047 Should be able to i.d. yours without pulling the taillamp. The two bulbs are very different in size. |
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