difference between cam and crank sensor

Question

1999 gmc 5.7 runs rough and stalls code says too much variance between cam and crank sensor.

Answer 1

Hi there

This code is usually the result of a bad crank position sensor or cam sensor. When there is to much difference between the two the code will be set. With a scan tool that can read live data you can usually look at the wave patterns to determine which sensor is bad.