Chevrolet Blazer Sun Visor Bulb Size

Additional Notes

• The Chevrolet Blazer uses the 37 bulb for the sun visor across all listed model years, spanning 1995-2003.
• The 37 bulb is an ANSI-standardized type recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical criteria shared across manufacturers.
• It is classified as a T5 miniature wedge bulb. The T5 designation refers to the tubular glass envelope, which is 5/8 of an inch wide, and the wedge base type means the bulb is held in its socket by the pinched glass base rather than by metal pins or a bayonet fitting.
• The 37 bulb operates at 12 volts and draws 1 watt, placing it among the lowest-output bulbs used in automotive interior applications. This low wattage is consistent with its role as a courtesy or vanity light rather than a primary illumination source.
• Because the same bulb size applies uniformly across the 1995-2003 Blazer model years, a single part number covers the full range of listed fitments without variation.
• The wedge base format of the 37 bulb is not interchangeable with bayonet-base or screw-base miniature bulbs, even when voltage and wattage ratings are otherwise similar. Socket compatibility depends on the base type, not electrical ratings alone.