{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": true,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": true,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": true,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": true,
    "zipPaymentFlag": "c",
    "hassleFreeReturn": true,
    "lifetimeReplacement": true,
    "cpn_off": false
}
2021 Chevrolet Silverado 3500 HD
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Guaranteed to Fit2021 Chevrolet Silverado 3500 HD Change Vehicle

AC Delco®
2021 Chevrolet Silverado 3500 HD - GM Original Equipment Series Starter Relay

Tap image and pinch to zoom.
$13.49
$29.67Save: $16.18(55%)
Manufacturer #D1780C
Guaranteed to Fit2021 Chevrolet Silverado 3500 HD Change Vehicle
Qty:
1

Your Vehicle Fit Details

Vehicle Name
Submodel
Engine
Fitment Information
2021 Chevrolet Silverado 3500 HD
High Country
8 Cyl 6.6L
4-Door, Crew Cab Pickup
2021 Chevrolet Silverado 3500 HD
LTZ
8 Cyl 6.6L
4-Door, Crew Cab Pickup
2021 Chevrolet Silverado 3500 HD
WT
8 Cyl 6.6L
4-Door, Crew Cab Pickup
2021 Chevrolet Silverado 3500 HD
LT
8 Cyl 6.6L
4-Door, Crew Cab Pickup

Highlights

Part:
Starter Relay
Brand:
AC Delco
Notes:
Black
Warranty:
24-months or unlimited mile AC Delco limited warranty
Quantity Sold:
Sold individually
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number:
REPO507801
Product Fit:
Direct Fit
Recommended Use:
OE Replacement
Replaces OE Number:
52476843
Series:
GM Original Equipment Series
Terminal Quantity:
5
Fitnotes:
4-Door, Crew Cab Pickup

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
1994 Buick Regal
Custom
6 Cyl 3.1L
VIN M, Hi-Power, With Resistor, Code 7866
1994 Chevrolet Caprice
Classic LS
All Engines
Sedan, Hi-Power, With Resistor, Code 7866
1994 Chevrolet Lumina
All Submodels
All Engines
Hi-Power, With Resistor, Code 7866
1994 Oldsmobile Cutlass Supreme
Base
6 Cyl 3.1L
VIN M, Hi-Power, With Resistor, Code 7866
1994 Oldsmobile Cutlass Supreme
S
6 Cyl 3.1L
VIN M, Hi-Power, With Resistor, Code 7866
Page 1 of 190 | Showing 1 - 5 of 948 results

Product Information

ACDELCO OE REPLACEMENT STARTER RELAYS

The factory-original fit and lasting function of ACDelco’s OE replacement starter relays provide the perfect repair without breaking your budget. Established in 1899, ACDelco manufactures original GM parts and premium OE replacement parts for other brands in the automotive aftermarket.

  • High-grade design delivers extended lifespan
  • Carefully formed to suit your specific vehicle
  • Engineered to exact OE standards
  • Has undergone stringent evaluation to guarantee proper fit and performance
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

1
Where is this part (AC Delco D1780C Starter Relay) on my 1998 Oldsmobile Aurora?DannoJun 09, 2020
Best Answer:Hello! This relay is located in the Passenger Compartment, Under the Left Side of the Instrument Panel
Mitchell D.STAFFJun 09, 2020
0
Where does the relay fit on my 2012 Cadillac SRX?Chaa J.Oct 03, 2023
Best Answer:Hi Chaa, I'm pleased to assist you. The starter relay on a 2012 Cadillac SRX is located in the fuse box under the instrument panel on the passenger side. Click the link below to continue ordering to take advantage of our discounted price and limited stocks. I hope this is helpful, and enjoy shopping! <a href="https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=CPGG4850_CSQA_20231003" target="_blank">https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=CPGG4850_CSQA_20231003</a>
Grace G.STAFFOct 03, 2023
0
where does this relay fit on my 95 Chevy Tahoe 5.7 4x4 c/k 1500 ?jay w.Aug 26, 2023
Best Answer:Hi Jay, thank you for reaching out! It fits inside the fuse relay center on the driver side of the engine compartment. You can click the link below to order this relay while stocks last. Have a good one! <a href="https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=cpab2020_csqa_20230826" target="_blank">https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=cpab2020_csqa_20230826</a>
Andrew B.STAFFAug 26, 2023
0
Where is this relay located on a 2008 Pontiac Solstice gxp?Curtiss H.Jul 03, 2023
Best Answer:Hi Curtiss, thank you for reaching out. The location of this item is in the fuse block inside the engine bay of the 2008 Pontiac Solstice GXP. For more details, we recommend referring to a vehicle-specific repair manual. You can use this link to continue ordering this part at a discounted price today: <a href="https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=CPAP3648_CSQA_20230703" target="_blank">https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=CPAP3648_CSQA_20230703</a> I hope this helps. Enjoy shopping.
Aldrin P.STAFFJul 03, 2023
0
Location of starter relay on  my 2003 Chevy impala ?Keith B.Jul 28, 2021
Best Answer:Hi Keith, I'm glad to help you out. The location of the starter relay of the 2003 Chevrolet Impala is on the junction box, inside the engine bay. We suggest that you refer to a service manual for more information. Take advantage of the sale price and limited stocks for this item. Click this link to order this part: <a href="https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=CPAP3648" target="_blank">https://www.carparts.com/starter-relay/ac-delco/acd1780c?can=CPAP3648</a> I hope this helps. Happy shopping.
Aldrin P.STAFFJul 28, 2021

Customer Reviews

Gm Original Equipment Series Starter Relay
Part fit perfectly and started right up
Peter A.
VERIFIED PURCHASER
Purchased on Dec 04, 2020
Gm Original Equipment Series Starter Relay
Good to go
Good part. This one was actually made in Korea which is on par with Japanese parts. I will continue buying parts here for the price and quality with on time shipping.
Richard B.
VERIFIED PURCHASER
Purchased on Nov 04, 2023