Question about 2003 GMC Envoy
<shrugs> yes and no, maybe
put up a youtube video on it
main thing is your check engine light on or any trouble codes?
oil changes and keep en eye on the level; too low and / or dirtly oil may exhibit more noise than normal
Posted on Apr 01, 2015
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Posted on Jan 02, 2017
like ticking while idling try unplugging eletric fan clutch harness to see if it goes away if it does replace fan clutch and its called a viscuss clutch fan.
Posted on Jan 03, 2009
SOURCE: Ticking sound
Gm will tell you this is normal lifter noise if it from the top of the motor. It could be from the exhaust but you would hear it from under the car more. I do not care for the responce from GM but they say it is ok.
Posted on Mar 01, 2009
this may also be a result of clogged injectors, buy a $8 bottle of injector cleaner and try that, its the cheapest fix to start with. Good luck
Posted on Nov 20, 2009
I have a 2002 with 130,000 and it ticks,but goes away after 2 min,if yours continues to tick you may have a rocker arm that is getting lose or a lifter that is not pumping up.
Posted on Jan 22, 2010
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