GM GENUINE D1780C
GM GENUINE part number D1780C is a a/c compressor relay in the Electrical-Switch & Relay system. This catalog matches it to 284 year-and-engine configurations from 1994 to 2026.
Verified fitment includes 2026 Cadillac CT4 2.0L L4 Turbocharged ; 2026 Cadillac CT4 2.7L L4 Turbocharged ; 2026 Cadillac CT5 2.0L L4 Turbocharged ; 2026 Chevrolet Silverado 1500 2.7L L4 Turbocharged ; 2026 Chevrolet Silverado 1500 3.0L L6 DIESEL Turbocharged , plus 279 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is GM GENUINE D1780C?
GM GENUINE part number D1780C is a a/c compressor relay with published application data for 284 vehicle configurations from 1994 to 2026. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does GM GENUINE D1780C fit?
This catalog matches D1780C to 284 year-and-engine configurations from 1994 to 2026. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is GM GENUINE D1780C OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. GM GENUINE D1780C is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
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