Chevrolet Colorado Fog Light Bulb Size

Additional Notes

• The Chevrolet Colorado front fog light specifications cover model years 2004 through 2019, with three distinct bulb types used across that span: the 5202, the 9045, and the H11.
• The 5202 bulb is an ANSI-standard single-filament halogen type rated at 12V and 24W, fitted with a PG20-3 base. It is the specified front fog light bulb for the Chevrolet Colorado across the 2015-2019 model years.
• The 9045 is also an ANSI-standard single-filament halogen bulb, but it operates at a notably higher wattage of 45W on a 12V circuit and uses a PY20d base. It applies to the 2009-2012 model years.
• The H11 is an ECE-standard single-filament halogen bulb rated at 12V and 55W, using a PGJ19-2 base. Although it originates from the European ECE regulatory framework, it carries approval for use in the United States as well.
• The H11 is the highest-wattage bulb among the three types listed, drawing 55W compared to 45W for the 9045 and 24W for the 5202. These wattage differences reflect distinct electrical load requirements and are not interchangeable without accounting for socket and circuit compatibility.
• Each of the three bulb types uses a different base configuration, meaning the PG20-3, PY20d, and PGJ19-2 bases are physically distinct and not cross-compatible with one another.
• For the 2004-2006 model years, the H11 bulb specification carries a conditional note indicating it applies only to vehicles equipped with halogen capsule headlamps. The 2007 and 2008 model years list the H11 without that condition.
• The ANSI standard governing the 5202 and 9045 bulbs is specific to the United States and Canada, while the ECE standard governing the H11 reflects a broader international regulatory framework.