Some Cadillac Escalade owners may notice that their luxury SUV emits a clicking or squeaking noise from around the front axle while driving. Now, a possible root cause for this issue has been identified, as has a fix.
Per a recent post from GM TechLink, the clicking sound issue may be present in certain units of the Cadillac Escalade equipped with four-wheel drive, specifically models between the 2021 and 2022 model years. Affected models are equipped with a front axle tagged with RPO code SU4. The sound may be heard when the vehicle is driven in two-wheel drive, while the sound will no longer be heard when the vehicle is driven in four-wheel drive.
According to GM TechLink, the issue may be caused by the left-side front axle output shaft. Critically, the report states that this squeaking sound issue does not affect the SUV’s durability, or operation of the vehicle in general.
In order to fix this issue, GM technicians are instructed to first take the Cadillac Escalade for a test drive to confirm that it is indeed making the squeaking noise. The noise may be easiest to duplicate in warm ambient temperatures after roughly 30 miles of driving. Once the GM tech confirms that the sound is present and can be isolated to the front-left axle seal area, it’s recommended to replace the left-side front axle output shaft (or front-wheel drive shaft). To this end, a new part number is available that includes a retaining ring and slinger, both of which are single-use parts.
In order to replace the left front-wheel drive shaft, GM technicians are instructed to reference the appropriate Service Information, specifically Front Wheel Drive Shaft Seal Replacement – Left Side or Front Wheel Drive Shaft Replacement – Left Side (SU4).