Cracking sound from tranny, with video.

GM_driver · July 20, 2015

Hey guys,

I've had this noise occurring for over a year now, I cannot nail it down. Anytime torque is applied to the drivetrain there is a cracking/sizzling sound for a few seconds coming from the transmission/transfer case/torque converter (not exactly sure yet). The sound is most noticeable when shifting between drive and reverse or after releasing brakes and accelerating from a stop light.

I do not believe it is the the flexplate, I also removed driveshaft to check u-joints and they seemed good. It could be engine or tranny mounts but not sure. Anyone with Ideas is welcome to comment! Thanks.

here is the video. the sound occurs at 9, 24, 33, and 41 seconds.

https://drive.google.com/file/d/0B8nwWtPD9JL6QTlrOGNxdVVUWnM/view?usp=sharing

newdude · July 20, 2015

#PIP5148: Tick/Ping Noise On Torque Reversal Or Load - (Aug 22, 2013)

Subject: Tick/Ping Noise On Torque Reversal Or Load

Models: 2012 - 2013 Chevrolet Silverado Tahoe 2012 - 2013 GMC Sierra Yukon 2012 - 2013 Cadillac Escalade With aluminum propshafts

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern

Some customers may comment on a tick ping noise on torque reversal (drive to reverse or reverse to drive) or load (park to either reverse or drive).

Recommendation/Instructions

Verify the source of the noise. If the noise is isolated to the propeller shaft, replace the propeller shaft. If the vehicle has a vehicle build date of January 1, 2013 or later please contact

Technical Assistance at the number you have been provided to set up a case that will be used to return the part to G.M. Engineering. You still need to replace the propeller shaft and are

encouraged to repair the vehicle using normal processes. Please have the current repair order number that the job will be billed out on for documentation.

For vehicles built prior to Jan. 1, 2013 please repair as needed.

My 2012 did it. My friend's 1995 with original propshaft does it.

Edited July 20, 2015 by 15HDriver

GM_driver · July 20, 2015

My 2012 did it. My friend's 1995 with original propshaft does it.

Thanks for that info, sounds like a perfect diagnosis for what I'm hearing. Looks like Fords have the same problem http://www.f150forum.com/f38/tick-click-sound-driveshaft-105882/

Any idea if its covered under the powertrain warranty?

Edited July 20, 2015 by GMdriver11