EN
Parts & Tools Parts & Tools
Mechanics Mechanics
Gear Guide Gear Guide
search

Fix Coolant Leaks: 2015-2019 GMC Sierra 2500 HD

Diamond Jim helped make these videos

We are still working to obtain content for your car, however the video above is believed to have similar characteristics as your car.

 
Video Description

Follow the steps in this video to see how to fix minor coolant (antifreeze) leaks in your 2015 GMC Sierra 2500 HD. Leaking coolant is one of the more common types of fluid leaks on Sierra 2500 HDs. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your Sierra 2500 HD's engine and keeps it from overheating. Coolant can leak from the reservoir or from the hoses, in 2015 Sierra 2500 HDs with the 6.0 liter engine, coolant leaks are most likely to occur where the hoses connect to the engine. The video above shows you where the coolant reservoir, hoses and connections on your 2015 Sierra 2500 HD Base are located and the steps needed to fix minor leaks.

A few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly. If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. In many 2015 Sierra 2500 HDs, an anti-freeze leak can cause the temp sensor to record high engine temperatures. Always protect yourself with safety glasses and gloves when working with the coolant on your Sierra 2500 HD.

Other videos you might find helpful

  • 2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup Hoses Check Hoses
    Checking coolant hoses

    Coolant hoses wear out over time and need to be replaced - check 'em early and often

    2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup
  • 2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup Lights Fog Light (replace bulb)
    Replace fog lights

    Don't be caught in the fog with burnt out fog light bulbs

    2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup
  • 2015 Chevrolet Silverado 2500 HD LT 6.6L V8 Turbo Diesel Crew Cab Pickup Air Filter (Cabin) Check
    Bad odors inside? Check this

    Do you ever get into your friend's car and notice a bad smell? A dirty cabin air filter could be the culprit

    2015 Chevrolet Silverado 2500 HD LT 6.6L V8 Turbo Diesel Crew Cab Pickup
  • 2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup Oil Check Oil Level
    Oil level check

    Cars burn, leak and otherwise dispense of their oil. Check your level frequently and top up when necessary

    2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup
  • 2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup Lights Daytime Running Light (replace bulb)
    Replace a burnt out DRL

    DRLs are on more than your headlights. They burn out faster and should be replaced regularly

    2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup
  • 2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup Clock Set Clock
    Set the clock to the correct time

    Is the clock in your car ahead or behind? Learn how to set it here!

    2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup
  • See all videos for the 2015 GMC Sierra 2500 HD
Comments
The Right Parts
The Right Tools