The 2003 Deville ....... Bank 1 is the right (rear) bank. Bank 2 is the left (front) bank.
B2S1 is in the exhaust manifold collector.
B1S1 is on top of the exhaust manifold.
B1S2 is the after-cat sensor.
B2S1 is in the exhaust manifold collector.
B1S1 is on top of the exhaust manifold.
B1S2 is the after-cat sensor.
