Chevrolet Silverado Fog Light Bulb Size

Additional Notes

• The Chevrolet Silverado front fog light specifications cover model years 1999 through 2024 and reference three distinct bulb sizes: 5202, 9145, and 880.
• The 5202 is the most widely used bulb across this specification set, appearing in Silverado front fog light fitments from 2007 through 2024. It is an ANSI-standard single-filament halogen bulb with a PG20-3 base, rated at 12V and 24W.
• The 9145 bulb is an ANSI-standard single-filament halogen with a PY20d base, rated at 12V and 42W. It draws notably more wattage than the 5202, which reflects a higher output design for fog lighting applications.
• The 880 bulb is an ANSI-standard single-filament halogen with a PG13 base, rated at 12V and 27W. It was used in the Silverado front fog light position for model years 1999-2002.
• All three bulb types carry different base designs, meaning the 5202 (PG20-3), 9145 (PY20d), and 880 (PG13) are not physically interchangeable with one another despite sharing the same 12V operating voltage.
• For model years 2021-2024, the 5202 front fog light bulb applies exclusively to the 2500 HD trim of the Chevrolet Silverado. The standard 1500 is not listed as a compatible fitment during those years.
• For model years 2016-2020, the 5202 front fog light bulb applies to the 2500 HD and 3500 HD trims of the Silverado. The 3500 HD is not included in the 2021-2024 fitment notes.
• Model years 2007-2015 list the 5202 bulb without any trim-level restriction, indicating broader fitment across the Silverado lineup during that period.
• The transition from the 9145 to the 5202 occurred between the 2006 and 2007 model years, representing a shift from a 42W bulb to a 24W bulb in the front fog light position.
• Because the 5202, 9145, and 880 each use a distinct base type, selecting a replacement bulb requires matching the correct size to the specific model year rather than assuming cross-year compatibility.