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I have a ticking taping noise between the fan and the engine.

Seems to be more right sided. 2007 trailblazer. No check engine lights and is always there. Just started while sitting at a light

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  • Cars & Trucks Master
  • 2,656 Answers

Serpentine belt may be going bad and can make tapping/knocking sounds when they do .

Posted on Aug 11, 2017

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6 Suggested Answers

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Posted on Jan 02, 2017

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greg_margo
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SOURCE: PO481 code Chevy IMPALA 2003

Looked it up in Chilton's, confirmed in http://www.obd-codes.com/trouble_codes/

P0481 Cooling Fan 2 Control Circuit Malfunction

Each fan will throw a different code. See 3 fans listed for your model. Here's a link for the wiring schematic: http://www.chiltonlibrary.com/content/images/WD/GM/014/WD_GM_014788.pdf


Best of luck.
Greg

Posted on May 23, 2009

  • 13 Answers

SOURCE: Ticking noise in engine

May be mice, but I had a truck that did that from a worn speedo cable.
Regards
Apeal

Posted on Aug 21, 2009

  • 1 Answer

SOURCE: the engine seems to be making a sputtering noise

Amelia, we just bought one off a lease 5 weeks ago (purchased from a dealer). We are having the same symptoms, suddenly, as you describe.

Took it back to the dealership. After a bit of drama, they agreed to foot the repair bill ($1000). It was a broken distributer cap and wiring which should have been replaced before it was resold to us. What a pain.

Posted on Jan 04, 2011

  • 1455 Answers

SOURCE: how to reset check engine light on 2007

It can be reset with a code scanner, but it will just come back on if the problem is not fixed first.

Posted on Jan 18, 2011

ryanlutton
  • 1131 Answers

SOURCE: 2004 trailblazer, 2 wheel drive.

A couple of things come to mind. Double check the wiring at the fan clutch, check the whole harness, there is a known problem wth chaffing there. Is it a Dorman brand fan clutch? These have been known to be bad out of the box. The other thing that could be wrong is the actual speed sensor on the new fan clutch. Hope some of this helps.

Posted on May 31, 2011

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1 Answer

I have a 2007 Chevrolet Trailblazer ls that has a ticking noise when you accelerate but stops when you brake no check engine light is on and vehicle seems to be running normal


Check engine lights do not come on for every possible fault. The noise you hear could be many different things, such as very small exhaust leak, a knock sensor just starting to fail, and others. Best would be if you could hook up a GOOD scan tool that will display real-time data and drive with a knowledgeable helper. Otherwise, you may have to make the dreaded trip to the dealer service dept.

Mar 17, 2016 | Chevrolet Cars & Trucks

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2005 Chevy Trailbrazer. Check engine light and check gauge lights have come on. Now there is a ticking noise coming from under the at idle and while driving!


take to a parts store, advance auto, etc., have them pull up trouble shooting codes from ECM, these codes , could be more than one, will pin point your problems. when engine light stays on , its storing codes, and these need addressed asap. as far as that ticking noise, get out might be a bomb, just kidding

Jan 31, 2013 | 2003 Chevrolet TrailBlazer

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2007trailblazer-humming noise when push on gas


Is the check engine light on as well?

Its possible that the fan clutch is bad and the noise your hearing is the fan rotating at higher speed than necessary. Try removing the serpentine belt and then see if the noise goes away. Do not run it without the belt for more than 5 minutes as the water pump will be disabled and will not cool the engine.

Aug 13, 2012 | 2007 Chevrolet Trailblazer 4.2

1 Answer

I have a 2004 6cyl. trailblazer EXT. My check engine light has been coming on then going off for quite some time. Had catalytic converter replaced 2 years ago, put on new gas cap a year ago, and...


More than likely, you have a failed fan clutch. That is a frequent problem on the 4.3 I6 engine. It will cause a roaring noise and "vibration" and allow the engine to overheat at low road speeds. As far as your check engine light and other driveablity problems, it may or may not be associated. Have someone with a code reader check it. The TrailBlazers were infamous for electrical gremlins.

Sep 05, 2011 | 2004 Chevrolet TrailBlazer

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2005 ext trailblazer has a problem with the oil pressure gauge. the check presure light on the dash comes on that the pressure goes back to normal. get a ticking noise from engine when this happens?


Don't mess with a potential low oil pressure. Tow it, don't drive, to someone who can check out the oil system and make sure it's working right before you run the engine. If you run it even long enough to drive it to the service shop and it does have a problem, you can wreck the engine bearings. It may be nothing, but it's not worth the risk.

Jan 09, 2010 | 2005 Chevrolet Trailblazer Ext

1 Answer

Ticking noise in engine


May be mice, but I had a truck that did that from a worn speedo cable.
Regards
Apeal

Aug 21, 2009 | Ford F-150 Cars & Trucks

1 Answer

Humming noise from engine fan


the trailblazers have a issue with the fan clutch. it normally has to be replaced. ide take it to a dealership. its not a easy task to replace the fan clutch if thats the problem.

Jun 18, 2009 | 2007 Chevrolet TrailBlazer SS

1 Answer

Ticking noise


usually when there is a ticking noise that changes as the rpm of the engine changes it could be that not all the components in the engine are properly lubricated. you may notice that noise occur temporarily when a car has been sitting for a while and all the oil runs to the bottom of the engine. as soon as the engine is running for a couple of seconds the noise goes away because oil is splashed on all those components. i recommend you check your oil level. i used to have a stealth with an oil leak...and i always knew when the oil was low because i would start to gradually hear the ticking noise. usually and hopefully that's it. it either that or you have bend rods that are slightly tappin on something else in there. but let's be a lil optimistic.

Sep 16, 2008 | 2003 Chevrolet TrailBlazer

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