Another major rattle solved

jeffsig · January 1, 2015

I had two major rattles on my 2014 LTZ. The first was the sunglasses holder which is another thread. The second I thought was either the dash or under the steering column. I zip tied my hood release cable which put to rest a very minor rattle, but there was another obnoxious "tick tick" type noise that became a vibration noise for me when going over bumpy roads and sometimes on the interstate when hitting a pot hole. I searched under the steering column shaking everything in sight until I found this object linked to the gear shifter. It is riveted and has lots of play. I zip tied it so it's just snug and what do you know. My truck is back to being a very quiet Silverado. Please check yours I'm willing to bet it's loose.

355HP Z71 · January 2, 2015

I had two major rattles on my 2014 LTZ. The first was the sunglasses holder which is another thread. The second I thought was either the dash or under the steering column. I zip tied my hood release cable which put to rest a very minor rattle, but there was another obnoxious "tick tick" type noise that became a vibration noise for me when going over bumpy roads and sometimes on the interstate when hitting a pot hole. I searched under the steering column shaking everything in sight until I found this object linked to the gear shifter. It is riveted and has lots of play. I zip tied it so it's just snug and what do you know. My truck is back to being a very quiet Silverado. Please check yours I'm willing to bet it's loose.

I have a rattle under my steering column and did notice noise from that top piece you have zip tied . What is that part ?? I think it is something to do with the gear shifter like you said? I was afraid to zip tie it because it moves .

jeffsig · January 2, 2015

I don't know what the part # is, but it is some sort of linkage from the gear shifter. I snugged it up with a zip tie and it operates fine. The piece that moves actually moves through it like a cylinder of sorts.

355HP Z71 · January 2, 2015

Ok .. Going to try it . I don't get the noise unless I'm going down washboard roads .

nadrojcote · September 25, 2015

I've done the same thing, this combined with uhmw tape on the metal shaft that passes thought the shift lock solenoid has made it quiet.

CCbandit · October 7, 2015

I was searching for a topic involving rattle noise under the hood and ran across this post. Believe it or not I was the engineer on the part you tied. It's a BTSI. This part prevents you from taking the truck out of park when you're foot is not on the brake. It's a safety feature in case a child gets in the drivers seat and starts pulling on the shifter, or someone yanks it out of park without their foot on the brake and mows someone over.

I no longer work for that company, but I can tell you that it's a clearance fit so the shaft can slide easier. There is also a draft angle on the plastic tooling to allow the mold tool to inject the part which could contribute. There is a solenoid in the top cover. When energized a pin moves through the shaft and blocks the shifter from pulling out of park then a spring return the pin when you place your foot on the brake. By placing a zip tie on the part you are side loading the shaft against the plastic which will prevent the noise but may create wear on the plastic. If you can't get your truck out of park it's because the shaft is pressed up against the pin preventing the spring from retracting the pin. The plastic is glass filled and very tough but could eventually wear from the shaft being twisted.

With that said, do not add grease to the shaft to prevent noise. It could wick up the pin, create a suction and prevent the pin from retracting. The zip tie could work if you placed a minor load to keep it from rattling but do not ratchet it down tight. I am telling you this to help you as a fellow truck owner not an engineer, so I take no resposibility for how or if you decide to modify your truck. If your truck is still under warranty I would take it to the dealer. They will replace the part and send it to the manufacture. That's is the only way engineers know there's a field issue.

nadrojcote · October 7, 2015

I was searching for a topic involving rattle noise under the hood and ran across this post. Believe it or not I was the engineer on the part you tied. It's a BTSI. This part prevents you from taking the truck out of park when you're foot is not on the brake. It's a safety feature in case a child gets in the drivers seat and starts pulling on the shifter, or someone yanks it out of park without their foot on the brake and mows someone over.

I no longer work for that company, but I can tell you that it's a clearance fit so the shaft can slide easier. There is also a draft angle on the plastic tooling to allow the mold tool to inject the part which could contribute. There is a solenoid in the top cover. When energized a pin moves through the shaft and blocks the shifter from pulling out of park then a spring return the pin when you place your foot on the brake. By placing a zip tie on the part you are side loading the shaft against the plastic which will prevent the noise but may create wear on the plastic. If you can't get your truck out of park it's because the shaft is pressed up against the pin preventing the spring from retracting the pin. The plastic is glass filled and very tough but could eventually wear from the shaft being twisted.

With that said, do not add grease to the shaft to prevent noise. It could wick up the pin, create a suction and prevent the pin from retracting. The zip tie could work if you placed a minor load to keep it from rattling but do not ratchet it down tight. I am telling you this to help you as a fellow truck owner not an engineer, so I take no resposibility for how or if you decide to modify your truck. If your truck is still under warranty I would take it to the dealer. They will replace the part and send it to the manufacture. That's is the only way engineers know there's a field issue.

I removed my zip tie as it made my shifter too stiff.

Adding thin UHMW tape to the metal shaft made it a tad bit thicker. Just enough that it slides freely and doesnt move as much. Also I found that its not the solenoid device itself making the rattle, nor is it the metal shaft inside the plastic.

For me it was the rubber bushing that connects closer to the driver seat (circled in attached pic), it seemed to be partially worn out and it had some play. Causing the plastic to tap against the metal bracket that it connected to. I popped it off, wrapped some electrical tape around the little metal ball that it clipped on to and then popped it back on. It now has very little play and my shifter is no longer stiff.

CCbandit · October 7, 2015

I removed my zip tie as it made my shifter too stiff.

Adding thin UHMW tape to the metal shaft made it a tad bit thicker. Just enough that it slides freely and doesnt move as much. Also I found that its not the solenoid device itself making the rattle, nor is it the metal shaft inside the plastic.

For me it was the rubber bushing that connects closer to the driver seat (circled in attached pic), it seemed to be partially worn out and it had some play. Causing the plastic to tap against the metal bracket that it connected to. I popped it off, wrapped some electrical tape around the little metal ball that it clipped on to and then popped it back on. It now has very little play and my shifter is no longer stiff.

CCbandit · October 7, 2015

That will work and it won't affect the function of the part. Good fix! If the zip tie was giving you a stiff shifter then it would definately ware the plastic. Just be sure the ball stud is fully snapped.

nadrojcote · November 2, 2015

My rattle was still happening, found that there was two 13mm bolts on a support bracket down where the console meets the dash on the driver side that were loosened off a good 3-4 full turns. The rattle was resonating through the bracket under the steering wheel. I could hear it when pulling down on my steering wheel.