Originally Posted by Envoy 2004
My both side height leveling sensor is broken so i want to replace it by new part
but if i installed the new piece you need the car to the re-programming
I found that the number of two pieces is changed from
GM #15070506 LEFT - SENSOR,RR AIR SPR LVL to 25999461 GM #15070507 RIGHT to 25999462
Are they the same
Yes, the new parts are equivalent to the older parts.
GM changed to the new part numbers in 2009 because the armature and yoke of the older parts were made with a substance (hex chrome) that has been banned in many regions for its toxicity during manufacturing.
By the way, replacement of a leveling sensor does not require any reprogramming of the vehicle. Just adjust the orientation of the new sensor (there is some play in the mounting) until the ride height is correct.