Not sure if this vehicle has an external tone ring or built into the bearing.If the tone ring has a crack in it sometimes this may or will cause a intermediate problem.What codes do you retrieve ? Just had a 04 Avalanche that would would set a code & light light at times because had a problem with a in bearing sensor.When reading PIDs the 1 wheel would go to "0"MPH around 3 to 4 MPH & this caused problem by making vehicle go into ABS lock-up & then setting a WSS code.Check PIDS during drive around the 20 minute time-frame.

Arthur Margotta
Owner/Technician
AJ.'s Ultralights, Automotive & Sport Vehicles
Thompson, Pennsylvania, USA