Ignitions and Electrical› Wiring Components

ACDelco

Multi-Purpose Relay

$22.42

SKU: D1780C

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The ACDelco D1780C is a black multi-purpose relay designed for vehicle electronics. It features a plug-in connector, normally open contact type, and push-in mounting. This relay is rated for 35 amps and operates automatically, with a continuous duty cycle. It is a GM Original Equipment part, ensuring it meets the rigorous standards set by General Motors.
Show original supplier description
The ACDelco D1780C is a black multi-purpose relay engineered to optimize vehicle electrical system performance. As a GM Original Equipment (OE) component, it is designed, manufactured, and tested to meet rigorous GM standards, ensuring fit, form, and function comparable to the original part. This relay features a plug-in connector, a normally open contact type, and a push-in mounting style, making it suitable for a variety of applications. With a 35-amp rating and continuous duty capability, the D1780C is built for reliable operation. Its automatic operation mode and the absence of heatsink protection are key specifications for its intended use within vehicle electrical systems. This ACDelco relay has been confirmed to fit certain vehicles, including the 2008 Hummer H3 and as a power door lock relay for the 2003 Chevrolet Silverado 1500. However, it is explicitly stated that this relay does not fit a 2013 Dodge Challenger 5.7L, and the exact windshield wiper relay for that vehicle is unavailable online. If experiencing issues like erratic windshield wipers or sudden drops in fuel efficiency, it is recommended to have a certified mechanic diagnose the vehicle before purchasing parts, as multiple factors can contribute to such problems.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandACDelco
Part NumberD1780C
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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