engine chirping sound when at idle cold start - TerrainForum.net: GMC Terrain Forum
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post #1 of 10 (permalink) Old 11-06-2019, 11:34 AM Thread Starter
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engine chirping sound when at idle cold start

so any idea thanks .after it warms up no more noise I hear it on the passside

Last edited by smooth78u; 11-06-2019 at 11:43 AM.
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post #2 of 10 (permalink) Old 11-06-2019, 11:54 AM
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Id say the serpentine belt.


Grab a spray bottle with water.
Turn on engine- while its chirping. spray water on the belt. try to spray the grooved parts.
see if it goes away

2013 Equinox LT1 3.6L V6 FWD 88,000
2010 Traverse LT1 3.6L V6 FWD 153,000
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post #3 of 10 (permalink) Old 11-06-2019, 12:17 PM Thread Starter
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Quote:
Originally Posted by rbarrios View Post
Id say the serpentine belt.


Grab a spray bottle with water.
Turn on engine- while its chirping. spray water on the belt. try to spray the grooved parts.
see if it goes away
okay
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post #4 of 10 (permalink) Old 11-06-2019, 02:31 PM
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I agree with rbarrios...on whatever he says about anything !

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post #5 of 10 (permalink) Old 11-07-2019, 06:48 PM
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mine does this. especially when it is cold and moist outside. i always assumed it was the serpitine belt. when i get around to it ill probably throw a new one on.

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post #6 of 10 (permalink) Old 11-07-2019, 07:21 PM
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More likely it *is* the belt, but I’ve also seen it be one of the pulleys (Idler, typically). Pressed a new bearing into a couple of them over the years.
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post #7 of 10 (permalink) Old 11-14-2019, 10:13 AM
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Quote:
Originally Posted by Colt Hero View Post
More likely it *is* the belt, but I’ve also seen it be one of the pulleys (Idler, typically). Pressed a new bearing into a couple of them over the years.
+1 I live in michigan and get this chirp every winter season. The lightest shot (use red straw) of wd40 at the base of the idler pulley (opposite end of the belt) temporarily fixes this chirp for a while. Of course be sure not to spray the belt.
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post #8 of 10 (permalink) Old 11-15-2019, 08:52 PM
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Had a similar chirp on mine when engaging the AC. Dealer Changed the belt at 32k. Chirp came back at 75k. Changed belt and tensioner. Still gone at 88k.
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post #9 of 10 (permalink) Old 11-15-2019, 09:31 PM
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My 2016 Equinox 3.6 does this when starting cold, I attribute the noise to the belt also.

It doesn't make the noise for an extended time, and isn't very loud.

I never had the dealer check it while under B to B warranty as I expect over time it will wear in and the noise will eventually stop.

.

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post #10 of 10 (permalink) Old 11-16-2019, 01:03 AM
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I've had luck with prestone "belt ease" spray in the past for squeaky belts
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