Chevrolet Silverado Engine Compartment Light Bulb Size

Additional Notes

• The 1156, 93, and 5008 bulbs are the three bulb types specified for the Chevrolet Silverado engine compartment light across the 1999-2006 model years covered in these specifications.
• All three bulb types share the same BA15s bayonet base, which is a single-contact base with a 15mm barrel and a single locating pin on the side.
• All three bulb types operate on a 12-volt electrical system and use a single-filament design, meaning each bulb serves one lighting function rather than switching between two brightness levels.
• The 1156 is rated at 21 watts, making it the highest-wattage option among the three types listed in these specifications.
• The 93 bulb is rated at 13 watts and is described as a lower-wattage variant of the 1156, sharing the same BA15s base but drawing less power.
• The 5008 bulb is also described as a lower-wattage variant of the 1156 with the same BA15s base, though its wattage is not specified in these specifications.
• Despite sharing the same base type, the 1156, 93, and 5008 are not confirmed as interchangeable, as the Silverado specifications assign each to distinct model years or trim configurations.
• The 1156 bulb applies to the Chevrolet Silverado 1500 and 3500 trims for the 2002-2006 period, while the 93 bulb is specific to the 3500 HD trim in 2003 and 2005.
• The 5008 bulb was used across the 1999-2001 model years, covering all Silverado configurations listed for that period without trim-level distinctions.
• All three bulb types carry the ANSI standard designation applicable to the United States and Canada, indicating they conform to a shared North American specification framework.