2018 Cadillac CT6 PLUG-IN Bulb Size
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Bulbs Chart
2018 Cadillac CT6 PLUG-IN Back Up Reverse Light Bulb (921)
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Best Choice
Replace your standard car lights with our robust Philips Vision LEDs that deliver dynamic lighting for your vehicle, both inside and out. The innovative design and unmatched performance of Philips Vision LEDs are available for brake and taillights, backup lights, dome lights, and license plate lights. These bulbs are covered
Philips 12789LPB2 Bright White Vision
LED Lights
Cadillac CT6 PLUG-IN Bulb Size By Years
Starting point: when I first looked for replacement bulbs for my 2018 Cadillac CT6, the options felt overwhelming. Think of this list as a simple bulb size chart that matches each lamp location to the correct type, a mental model that helps you shop with confidence instead of guesswork.
Small win and expand scope: I found that matching socket type and wattage solved most fit problems, a useful rule of thumb that sped up installation. I built the chart from hands-on swaps and parts labels so it covers headlights, turn signals, brake lights and interior lamps.
Refine, validate and quick recap: I’ve included notes on common fit quirks and cross-references I tested, so you can validate choices before buying. Affiliate disclaimer: some links may earn me a small commission at no extra cost to you, and I only link to products I’d use myself.
2018 Cadillac CT6 PLUG-IN specs
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Exterior
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