When to replace plastic heater hose connectors in GMC?

When to replace plastic heater hose connectors in GMC?

Replacing GM plastic heater hose connectors is often an emergency situation, where the hose has broken on the side of the road. It is not a bad idea to preemptively attack this problem and replace them before one breaks and leaves you stranded.

Where are the heater core hose quick connect fittings?

Anyway, on with the show… The subject of discussion is a hose quick connect fitting that is located right at the firewall on the passenger side of the engine. Two rubber hoses attach to the heater core at this location via these quick connect fittings which the hoses are clamped to (I should have photos I know).

When did GM stop using heater hose disconnects?

All GM trucks and SUVs used plastic heater hose connectors (disconnects) for the heater hoses from 1999-2014. The problem with this is that over time, the plastic becomes brittle and breaks off. Because the connector breaks in the middle, you can’t just simply slide the hose over the heater barb and toss on a worm-clamp.

Where can I get plastic heater hose connectors?

The plastic heater hose connectors are available from your local NAPA Auto Parts Store, or in an emergency you can temporarily use a basic worm-type hose clamp on the hose over the remaining copper tubing of the heater core. But the real trick is getting the connector off the pipe. A disconnect tool is available and usually does the trick quickly.

Replacing GM plastic heater hose connectors is often an emergency situation, where the hose has broken on the side of the road. It is not a bad idea to preemptively attack this problem and replace them before one breaks and leaves you stranded.

Anyway, on with the show… The subject of discussion is a hose quick connect fitting that is located right at the firewall on the passenger side of the engine. Two rubber hoses attach to the heater core at this location via these quick connect fittings which the hoses are clamped to (I should have photos I know).

All GM trucks and SUVs used plastic heater hose connectors (disconnects) for the heater hoses from 1999-2014. The problem with this is that over time, the plastic becomes brittle and breaks off. Because the connector breaks in the middle, you can’t just simply slide the hose over the heater barb and toss on a worm-clamp.

The plastic heater hose connectors are available from your local NAPA Auto Parts Store, or in an emergency you can temporarily use a basic worm-type hose clamp on the hose over the remaining copper tubing of the heater core. But the real trick is getting the connector off the pipe. A disconnect tool is available and usually does the trick quickly.

Posted In Q&A