Rear end makes a whining noise when the car is in motion. The faster the car goes the louder the noise. and the low pressure warning comes on when the car is idling
Escalde 2005 has the following problems on 2005 Cadillac Escalade
Check the rear end gear oil level or condition of the gear oil for possible drain and refill, possible wheel bearing issue. The low pressure I assume from previous post is the oil pressure. Have the oil pressure tested with a pressure gauge, more then likely a oil pressure sender. we're on the same page this time PR, Lol
Good answer, i agree!! You kow that old saying, great minds!
Have rear differential lube checked and oil pressure tested with a test gauge. Mechanic can advise corrective action after testing.