2004 Chevrolet 2500HD U2104, U2105, U2106 & P0700 ECM Error Codes After Speed Sensor Replacement

Model: 04 Chevy 2500HD Fault Code: P0700 Posted: 2017-10-23 19:23

I recently had my 2004 Chevrolet 2500HD 6.6L diesel truck's speed sensors replaced due to brake pedal softness when approaching a complete stop. Following the replacement, I now have multiple ECM-related diagnostic codes: U2104, U2105, U2106, and P0700. These codes indicate potential issues with vehicle speed sensing and transmission control systems. I'm seeking advice on whether these codes are directly related to the sensor work or if further diagnostics are needed to identify the root cause.