oxygen sensor on 1996 gmc suburban

[hbhat3]

Has anyone had any problem with replacement oxygen sensor on the left and right bank. This is my problem I replaced the left and right bank sensor with ones from a 1994 because the part house said they could not find the ones for the 1996. What is happen now is the engine is running rough a low speed. The GMC dealer replace the distributor with no correction of the problem. Any suggestion

[Dr_Zero]

The part numbers for the 2 years are different so might be the o2 sensors are not sending the right info ???
Also the 96 shows 4 wires and the 94 shows 3 wires

1994

Part No.
13077
Bosch Oxygen Sensor: Three Wire; Heated
OE Type; 3 Wire; Heated; Upstream Sensor; 3 Wire; Check / Replace Interval: 60,000 Miles
Warranty: 1 Year Replacement Warranty

1996

Part No.
13474
Bosch Oxygen Sensor
OE Type; 4 Wire; Heated; Upstream Sensor; Two required; Check / Replace Interval: 100,000 Miles
Warranty: 1 Year Replacement Warranty