Bubbling

Anything related to the factory RPO Crew Cab.

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Shanekeller1994
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Bubbling

Post by Shanekeller1994 »

Every now and then i hear bubbling when i take off does this always happens or is something wrong
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04crewvt
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Post by 04crewvt »

I would check for air in the coolant system, have you recently had it serviced? if so air may have gotten trapped in the heater core.
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Post by killian96ss »

Or the heater core may be plugged up because of Dex-Cool if it's still in the system.

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Post by Jongo88 »

Bad radiator cap? bad intake gasket? There is air in the system.
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Post by F9K9 »

I would spend some time researching what Steve recommended.
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Post by BobbleSmitty »

I used to get that sound, but only when I had used the A/C
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Post by davejb851 »

Had the same problem in my LR Discovery. I had a small leak in the heater core, which allowed air to enter the closed system. It sounded like I had gallons of water loose under the dashboard.
Pressure check the cooling system, then start checking for leaks, loose clamps, etc.

In the LR I had to completely remove the entire dashboard to get to the heater core..........hope never to have to do that with the CC!
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Post by Shanekeller1994 »

thanks i will look a try to fix it
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Post by fallvitals »

My old 97 s-10 had that gurgling sound. No matter if air was on, off. It was one of those things that was a bother, but never did any thing. Turn the radio up louder.
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Post by Roberty »

I used to have a 96 S-10 that did that same thing. Turned out to be a cheapo Advance Auto Parts thermostat. I bought a new GM thermostat and that took care of the problem.
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Post by ang94541 »

davejb851 wrote: In the LR I had to completely remove the entire dashboard to get to the heater core..........hope never to have to do that with the CC!
Surprise! :lol:
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Post by jist1983 »

Oh man... this is what i was afraid of... removing the dashboard.. Don't wanna do it. Got this problem about month or so ago and just haven't looked it up till now. I've pretty much been doing the same thing as fallvitals.. Turning the radio up....
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Post by HenryJ »

Hopefully you are not still using the stock radiator cap, or Dex. There is a good thread on the problems with them. Change it.
Heater core:
If it is not leaking, flush the system. This needs to be one every 2-3 years. I prefer to use green, and this is a good time to make that change.
Now is also a good time to change that thermostat.
Make sure you flush the core out good. Disconnect the hoses and with out over pressurizing, flow through it.
The Prestone flush kits work pretty well.
Once this is all done , the water is clear , clean and you have flushed the system three times, then refill with one bottle Redline Waterwetter and a 50/50 mix green. With the cap slightly loosened, or the lever up, squeeze the upper hose to purge air back to the recovery tank.
Fill the recovery reservoir to the full hot mark and keep it there.

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