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information is used for engine controls as well as determining the transmission shift patterns. The INPUT SPEED SENSOR (ISS) Fig. 202: Identifying Input Speed Sensor (ISS) The input speed sensor (ISS) is a hall-effect type sensor. The ISS mounts to the control valve
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
machined teeth surface. The sensor receives 8.3-9.3 volts on the ISS/OSS Supply Voltage circuit OUTPUT SPEED SENSOR (OSS) Fig. 203: Identifying Output Speed Sensor (OSS) The output speed sensor (OSS) is a hall-effect type sensor. The OSS mounts to the control valve
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The sensor receives 8.3-9.3 volts on the ISS/OSS supply voltage circuit from the TCM. As the AUTOMATIC TRANSMISSION INLINE 16-WAY CONNECTOR DESCRIPTION Fig. 204: Identifying Automatic Transmission Inline 16-Way Connector The transmission electrical connector is an important part of the transmission operating system. Bent pins in the connector from rough handling during connection and disconnection Wires backing away from the pins or coming uncrimped, in the external wiring harness Dirt contamination entering the connector when disconnected
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Transmission fluid leaking into the connector, wicking up into the external wiring harness Moisture intrusion in the connector Low pin retention in the external connector from excessive connection and disconnection of Pin corrosion from contamination Damaged connector assembly Remember the following points: Limit twisting or wiggling the connector during removal. Bent pins can occur. Do not pry the connector off with a screwdriver or other tool. Whenever the transmission external wiring connector is disconnected from the internal Use the following procedure to disconnect the engine side of the 16-way connector from the 1. Unlock the slide lock on the engine wiring harness connector. 2. Rotate the connector lever counterclockwise and remove the connector from the electrical connector passage sleeve. Use the following procedure to reconnect the engine side of the 16-way connector to the 1. Orient the alignment slot on the engine side of the connector with the alignment tab on the electrical connector passage sleeve. 2. Slide the engine side connector through the electrical connector passage sleeve and into the transmission side connector. 3. Rotate the connector lever clockwise until the connector is fully seated. 4. Lock the slide lock on the connector. PARK - ENGINE RUNNING When the gear selector lever is in the Park (P) position, fluid is drawn into the pump through the
2008 Chevrolet Silverado 1500 2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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