Replacement ride height sensor

[StephenW]

I have a 2015 Yukon XL Denali with stock rear air suspension. I need to replace the right rear ride height sensor -

1. Any reason to use something other than stock AC Delco parts?
2. Does it make sense to replace both left and right rear sensors at the same time?

Thanks.

 

[Joseph Garcia]

Use GM or AcDelco parts. IMO, replace only the one that is bad. If another goes, replace it at that time.

Curious, how did you determine that the sensor was bad?

 

[StephenW]

Use GM or AcDelco parts. IMO, replace only the one that is bad. If another goes, replace it at that time.

Curious, how did you determine that the sensor was bad?

“Service leveling system” code on dash. Replaced compressor, still in. Shop read it and saw voltage was off for one of the sensors.

 

[Doubeleive]

“Service leveling system” code on dash. Replaced compressor, still in. Shop read it and saw voltage was off for one of the sensors.

those sensor's rarely fail you should be fine with just replacing the one, presuming it is in fact bad. I would just get a used oem one

15 16 17 18 19 20 ESCALADE TAHOE Passenger Rear Ride Height Sensor 23152101 RH | eBay

2015-2020 Escalade, Suburban, Tahoe, Yukon. ESCALADE ESV 15. We are a salvage yard based out of Ray, MI. We specialize in late model GM vehicles, mainly GM Yukon Denali, Silverado SS, GTO, Trailblazer SS, Escalade, Corvette, Camaro, and Firebird vehicles.

www.ebay.com

whichever way you decide to go be sure to measure the old sensor rod and set the new one to the exact same length and after installing a system calibration should be done
or just use the existing rod I believe they can disconnect on both ends

 

[Joseph Garcia]

“Service leveling system” code on dash. Replaced compressor, still in. Shop read it and saw voltage was off for one of the sensors.

Interesting. The voltage is not exactly the same in any of the 4 sensors, as they vary from each other by less than 0.5 volts. I wonder if you reset the Automatic Level Control (ALC) setting, which is something I always do, when making any suspension changes. This reset baselines the voltages at every sensor and sets the level control, based on those voltages.

I'm not saying that your mechanic is wrong, I just want you to be sure that the existing part has failed and needs replacement, as that part in not cheap.