Make sure this part fits your vehicle

Engine Block Heater (for Z71/AT4)

GM Part No.: 85515803
GM 85515803 Engine Block Heater (for Z71/AT4)
  • For Z71/AT4, gas engines only
  • Helps ease cold-weather starts
  • Heats engine and engine block fluids
  • Plugs into a standard 110-volt outlet
  • Plug is conveniently located on the driver’s side under the hood
  • Includes the block heater harness, heating element, wall plug heater cord, extension harness and all required mounting hardware
  • Help ease cold-weather starts with a Chevrolet Accessories Engine Block Heater. Includes the block heater harness, heating element, wall plug heater cord, extension harness and all required mounting hardware
Customer Questions & Answers
$247.50 MSRP: $300.00
You Save: $52.50 (18%)
Ships in 1-3 Business Days
Warning: California’s Proposition 65


This genuine GM part is guaranteed by GM's factory warranty.

This Part Fits

Make Model Year Submodel
ChevroletSuburban20231500 2WD, 1500 4WD
ChevroletSuburban20221500 2WD, 1500 4WD
ChevroletSuburban20211500 2WD, 1500 4WD
ChevroletTahoe20212WD, 4WD
GMCYukon20232WD, XL 2WD
GMCYukon20222WD, XL 2WD
GMCYukon20212WD, XL 2WD

Customer Questions & Answers

Do these parts fit my vehicle? Posted by GMPartsGiant Specialist
You can Select Your Vehicle to check if 85515803 fits your vehicle.
Posted by GMPartsGiant Specialist
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Genuine GM Accessories 85515803, the Right Choice

Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 85515803 Engine Block Heater (for Z71/AT4). It is sometimes referred to as GM Engine Block Heater. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Chevrolet Suburban, Tahoe models. It fits GMC Yukon.

Affordable, reliable and built to last, GM part # 85515803 Engine Block Heater (for Z71/AT4) stands out as the smart option. is your prime online source with the biggest and best selection of genuine GM parts and accessories at giant discounted prices. We have the OEM GM parts and accessories you need at the wholesale prices. has you covered no matter what type of GM vehicle you drive.

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