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GM Diesel Trucks: Block Heater Cord May Short Circuit

NHTSA campaign 19V328000 · Reported Apr 25, 2019 · General Motors LLC

high How serious is it? About this label

A short circuit that damages engine components increases the risk of a fire. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	19V328000
Reported to NHTSA	Apr 25, 2019
Manufacturer	General Motors LLC
Part affected	Engine
Vehicles covered	8 model/year combinations, model years 2018–2019
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

These GM diesel trucks can be equipped with an optional engine block heater. The cord that plugs into this heater, or the terminals where the cord connects to the block heater, may short circuit and fail. If a short circuit happens, it can damage engine components nearby and increases the chance that a fire could start in the engine area of the vehicle.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your truck is included.
2. Contact a Chevrolet or GMC dealer, or call GM customer service at 1-586-596-1733, to schedule the repair.
3. The engine block heater replacement (and cord rerouting where applicable) will be done free of charge.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 19V328000. More in how recalls work.

Affected vehicles (8)

2018 Chevrolet Silverado 2500
2018 Chevrolet Silverado 3500
2018 GMC Sierra 2500
2018 GMC Sierra 3500
2019 Chevrolet Silverado 2500
2019 Chevrolet Silverado 3500
2019 GMC Sierra 2500
2019 GMC Sierra 3500

Who to contact

Chevrolet — official Chevrolet recall lookup

Customer service: 1-800-222-1020

GMC — official GMC recall lookup

Customer service: 1-800-462-8782

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

Other Chevrolet Silverado 3500 recalls

May 21, 2026Chevrolet Silverado, GMC Sierra Roof Air Bag Inflator Riskhigh
Mar 19, 2026Chevy Silverado and GMC Sierra Roof Air Bag Defecthigh
Mar 5, 2026Silverado and Sierra 3500 Fuel Pump May Stall Enginehigh
Feb 26, 2026GM vehicles may be missing the electronic owner's manuallow
Feb 12, 2026Chevrolet Silverado, GMC Sierra Transmission Wheel Lockup Riskhigh
Nov 25, 2025Chevrolet Silverado Trucks Missing Owner's Manuallow

All 24 Silverado 3500 recalls

Official notice

Component: ENGINE
Summary: General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the terminals that connect the heater cord to the block heater may short circuit and fail.
Safety risk: A short-circuit may damage the engine components and increase the risk of fire.
Remedy: GM will contact owners, dealers will replace the engine block heater, free of charge. Additionally, in Chevrolet Silverado 2500 and 3500 vehicles, dealers will install a new rerouted heater cord. The recall began December 11, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N182206310.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.