I cleaned the throttle body today on my 2016 Sierra 5.3 and then I intended to clean the idle air control valve but no matter where I look I cannot locate it. I even looked the part up on line but cannot find anything like it anywhere near the throttle body. The only thing that resembles it is an electrical sensor but it only has one bolt in it, the air control valve is supposed to have two. I hate asking stupid questions but if anyone can explain where this thing is I would really appreciate it. Thanks
Since buying my 2016 Sierra 1500 I have had to get used to some noises in the engine that I am not used to but the folks here say they are normal. I have one more noise that It is making that I would like to ask you guys about. After sitting all night when I start it there is a rattle that sounds like the main bearings. It stops instantly and I would like to know if any of you have experienced this. This truck has 42,000 miles on it and has been meticulously maintained and I wouldn't think it could be the mains making this noise but I am still getting used to these gas engines coming from diesels...
Mookdoc6, We have quit camping and I just don't need trucks as big now plus the maintenance is high but I will say this GMC sure does ride a whole lot better than a Ford F-350. Thank you for your input.
Since recently buying a 2016 Sierra 1500 with a 5.3 engine I have discovered a couple of unusual sounds in this engine that I am not used to hearing but according to the folks here they are not out of the ordinary. I have been hearing one other sound though that I want to ask y'all about and that is when it is started after sitting all night. For a split second there is a sound that seems to me to be the sound of main bearings rattling and then it goes away quickly. This truck has 42,000 miles on it and has been meticulously maintained so I wouldn't think it is the mains but am wondering if others here have the same type sound in your engines. Thank you for your input. I have only owned diesel pickups for years so am having to get used to this gas burner. d
I have a 2016 Sierra with a 5.3 and when it is idling in gear it is a little rough. I can put it in neutral and it smoothes out. I showed my dealer what it is doing and asked him to turn the idle rpm up and he told me that they can't adjust the idle that the computer does it. I have never seen a truck that you couldn't adjust the idle on. My question is have any of you folks figured out how to adjust the idle on one of these engines. I am having quite a learning curve here coming from years of owning diesel pickups. Thanks for your help.
I recently bought a 2016 Sierra 1500 with the 5.3 engine that has a ticking noise in it that sounds just like a lifter or a loose valve. I took it to the dealer and they looked at it and said that there is no problem that all the 5.3 engines since 2015 do this. I was told that it has to do with the fuel system. I can't help but think that there is a lifter, rocker or something else that is making the noise. My question is does anyone else have a 2016 5.3 that sounds like something is loose in the top of the engine and if so what did you find it to be? Thanks for any input...
I just purchased a 2016 GMC Sierra and would like to know how to decode GM vin numbers to determine specifically the rear end ratio in this truck. Also is there a website where I might be able to find an original sticker or a list of installed options. Thank you for any help.
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