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2012 Silverado 2500HD steering clunk/ pop

carkhz316

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carkhz316 Enthusiast

carkhz316

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As a preface, I have searched high and low about this issue. Almost nothing pertains to the GMT900 trucks like it does for the infamous steering shaft clunk of the GMT800s. Also, my truck has about ~116k miles. Anyway, when turning at slower speeds (like turning in a parking lot or side streets in town), I get a single popping/ clunk sound in either direction. The feeling/ sound is best described as a idler arm/ pitman arm that pivots back and forth, but it's not that. I have performed an extensive shakedown of the entire front end, both on and off the ground, and with a helper to wiggle the steering wheel. I have pried on every joint, including inner and outer tie rods, upper and lower ball joints, wheel bearings, stabilizer bar links, stabilizer bar mounts, idler arm and bracket, pitman arm and steering box, and put on my hands on every one. All are tight, with the one exception of the steering shaft has a very small amount of radial play in the upper portion near the firewall. The "upper" u-joint of the ISS is tight, and the play is beyond that. It seems like it's more the bottom of the steering column itself in the interior side of the firewall. I suspect this as a cause, but the clunking/ pop noise emanates from outside of the vehicle, and is not felt in the steering wheel. Also, there is nothing amiss/ no noises ever at highway speed, or bumpy roads and terrain when the wheel is straight; just slow speed maneuvers when turning the wheel 90* or more in either direction. What do you guys think? Thanks!

r1byker Enthusiast

r1byker

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Posted

Just curious if you have kept up on lubing the the front end.  I had, to my shame and regret, neglected on keeping up on the lube schedule.  When I started lubing it, the sound went away and hasn't returned.

 

carkhz316 Enthusiast

carkhz316

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Yes. I regularly lube everything at every oil change, including the hidden idler arm zerk, which I've since added the extension hose to.

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