LRob

My 2018 Suburban was making this sound from day one. I took it in four different times and they kept telling me they didn't hear anything. I finally found these threads and printed a copy of the PIP5570A GM Bulletin and took it in along with a couple recordings of the sound. I ask them to do what was instructed as the correction. After two days I got a call that my car was ready and they said it was fixed. I took it for a drive with the mechanic and heard the sound immediately. They had not done the PIP5570A correction and said they could not even find it on the GM site. I asked them to please do this. They looked further and found that the bulletin was renamed 18-NA-349. They performed the recommended fix of removing and resealing the steering shaft. The sound is now gone. If it comes back, I will have them replace the steering seal.