It's not listed in the owner's manual so you may have to ask your dealership. All I could find was the bulb numbers for the exterior lamps like Back-Up Lamps, License Plate Lamp, etc.
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Size of interior cabin light bulbs?
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An easy way to find out is to call up your local Chevy dealer and ask to speak with the parts department. Those guys should be able to provide you with the part numbers and maybe go a step further to describe it. Always easier to make a phone call
Here's the Bolt's stock hatch bulb, and what LED replacement would fit. Needs to be a T10 base.
Attachments
So I yanked off the cover for the rear dome lights...seems the bulbs are the same as the hatch bulb (T10 base). Unlike the hatch bulb, you'll need LEDs that shoot the light downwards versus off to the side like with the hatch LED bulb.
I'm still not 100% sure how to take off the covers for the front dome lights. I may just swing by my local dealer, go "Hey guys, want to check out the car you won't be getting for another few weeks?? btw, can you tell me how to remove the front dome light cover?"
These would definitely fit the rear light housing:
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http://www.vleds.com/194-4-ll.html
Assuming the front bulbs are the same, they should work for those too. Bit pricey though at $10/bulb. That'd be 5 total bulbs to replace all dome lights + the hatch.
I'm still not 100% sure how to take off the covers for the front dome lights. I may just swing by my local dealer, go "Hey guys, want to check out the car you won't be getting for another few weeks?? btw, can you tell me how to remove the front dome light cover?"
These would definitely fit the rear light housing:
http://www.vleds.com/194-4-ll.html
Assuming the front bulbs are the same, they should work for those too. Bit pricey though at $10/bulb. That'd be 5 total bulbs to replace all dome lights + the hatch.
Interior LED lights installed
I replaced the four cabin interior lights and the one light in the hatch with these LED lights made by Pilot and sold by Wal*Mart. They come two to a pack for a little over nine dollars. You will need three packs if you do the hatch light. You have to remove the front overhead panel above the driver. Make sure the overhead light switch is off. Panel is held in place with four clips. Take your two hands and grasp the rear section of the panel, gently pulling down while pushing forward with your two thumbs. You should be able to lower the back section and then pull towards you releasing the front. No need to remove the electrical connector or speaker wire. You'll see the two factory bulbs. They are almost impossible to pull out with your fingers. I used a small pair of needle nose pliers. Once the original bulbs are out, install the new ones, firming pushing then into place. Test to ensure that both LEDs light prior to reinstalling the overhead panel. The rear overhead light cover come off from the light assembly. Grasp the rear section and gently pull it down and loose and remove the cover. You'll have access to the two factory bulbs. Make sure the front overhead light switch is off. Replace with the LEDs, test, and reinstall the cover. The rear hatch light is easy. Take a small flat tip screwdriver and remove the clear lens. The electrical connector can be removed by pushing the tab on the side. Replace the factory light with the LED and reinstall.
Several notes, most automotive stores as well as Wal*Mart sells all types of LED replacement lights. you're looking for 194, also fits 168 & 2825. Key number is 194. The lights I chose are 5 LEDs per light, which is small enough to fit with the lens cover back on. LEDs are bright, too many LED per light and the inside of the car will be too bright. I'm happy with the beautiful, bright, pure white light these LEDs provide. Biggest positive, the LEDs turn on and off like the factory lights, dim to full brightness and the reverse when shutting off. I'm very pleased.
I had problems posting multiple pictures, so I've only included the pic of the LED package for reference.
I replaced the four cabin interior lights and the one light in the hatch with these LED lights made by Pilot and sold by Wal*Mart. They come two to a pack for a little over nine dollars. You will need three packs if you do the hatch light. You have to remove the front overhead panel above the driver. Make sure the overhead light switch is off. Panel is held in place with four clips. Take your two hands and grasp the rear section of the panel, gently pulling down while pushing forward with your two thumbs. You should be able to lower the back section and then pull towards you releasing the front. No need to remove the electrical connector or speaker wire. You'll see the two factory bulbs. They are almost impossible to pull out with your fingers. I used a small pair of needle nose pliers. Once the original bulbs are out, install the new ones, firming pushing then into place. Test to ensure that both LEDs light prior to reinstalling the overhead panel. The rear overhead light cover come off from the light assembly. Grasp the rear section and gently pull it down and loose and remove the cover. You'll have access to the two factory bulbs. Make sure the front overhead light switch is off. Replace with the LEDs, test, and reinstall the cover. The rear hatch light is easy. Take a small flat tip screwdriver and remove the clear lens. The electrical connector can be removed by pushing the tab on the side. Replace the factory light with the LED and reinstall.Several notes, most automotive stores as well as Wal*Mart sells all types of LED replacement lights. you're looking for 194, also fits 168 & 2825. Key number is 194. The lights I chose are 5 LEDs per light, which is small enough to fit with the lens cover back on. LEDs are bright, too many LED per light and the inside of the car will be too bright. I'm happy with the beautiful, bright, pure white light these LEDs provide. Biggest positive, the LEDs turn on and off like the factory lights, dim to full brightness and the reverse when shutting off. I'm very pleased.
I had problems posting multiple pictures, so I've only included the pic of the LED package for reference.
Four interior (2 lights x2), rear hatch light x1
I was talking about the license plate bulbs?
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