Automatic Transmission Model Codes Equipped With or Without Input Speed Sensor - keywords 4L60E 4L65E 4L70E ISS pump

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Identifying 4L60E, 4L65E and 4L70E transmissions equipped an input speed sensor. Vehicles that use an ISS are not identified by vehicle, only by transmission code listed below. The transmission code can be found on the transmission case or in GM Vehicle Inquiry System (VIS) under the Vehicle Component page.

2007 models that WILL use ISS

2007 models that WILL NOT use ISS

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.