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Click on image for the lowdown. 
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#91894 04/03/2005 3:59 PM | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | ohpants,
I think the numbers below might help. The first number is GM part number (I think). The number in parentheses is the bulb manufacturer's bulb number.
Tim
Instrument
6V 125588 (55)
12V 127934 (57)
Beam Indicator
6V 115273 (51)
12V 131282 (53)
Directional Signal Indicator: one of the above (I think I used a 53) | | |
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