2007 suburban dash is saying stability system disabled what does this mean ?

{: ) Check for excessive wear on any of the tires on the vehicle and then verify that all the tires are the same size, brand, and same model. It is also important to check and make sure the tire pressure is properly adjusted per the sticker on the door. The following examples listed below could cause this condition:
1. 2 tires on the vehicle are Goodyear P245/75R16 and the other 2 tires are Firestone P245/75R16
2. 2 Tires on the vehicle are brand new and the other two tires have excessive wear.
3. 2 Tires on the vehicle are Goodyear Wrangler SRA 265/70R17 and 2 tires are Goodyear Wrangler HP 265/70R17 (Same brand/different models)
4. Aftermarket Wheels and Tires (NON-OEM 20 inch wheels and tires)
5. Tire pressure is not properly adjusted.