GM Code C0055 Vehicle Speed Sensor Silverado Video

GM Code C055

Vehicle Speed Sensor Circuit

Circuit Description

The powertrain control module (PCM) converts the signal from the vehicle speed sensor (VSS) to a 128 k pulses/mile signal. The electronic brake control module (EBCM) uses the vehicle speed signal from the PCM to calculate the rear wheel speed.

How to replace the Vehicle Speed Sensor (VSS)

Vehicle Speed Sensor Replacement

Removal Procedure

1. Raise and suitably support the vehicle.
2. Disconnect the vehicle speed sensor (VSS) electrical connector (2).
3. Remove the VSS bolt (2).
4. Remove the VSS (1).
5. Remove the O-ring seal (3).

Installation Procedure

1. Install the O-ring seal (3) onto the VSS (1).
2. Coat the O-ring seal (3) with a thin film of transmission fluid.
3. Install the VSS (1).
4. NOTENoticeRefer to Fastener Notice.Install the VSS bolt (2).
   TightenTighten the bolt to 11 N·m (97 lb in). 
5. Connect the VSS electrical connector (2).
6. Lower the vehicle.
7. Refill the fluid as required.

– Part used in video