What does P1571 mean on a Chevy?

P1571. Traction Control Torque Request Circuit. Applies to Corvette, Camaro, Silverado, Tahoe, Impala.

What causes P1571 on a Chevy?

Open or shorted serial data line between the EBTCM and PCM Failed electronic brake traction control module losing torque-request output Corroded EBTCM connector from wheel-splash exposure Mismatched PCM or EBTCM calibration after module replacement

How do I fix P1571 on a Chevy?

Scan both the PCM and EBTCM for codes; diagnose EBTCM codes first Inspect the EBTCM connector and Class 2 serial data wiring for corrosion Verify both modules carry matching calibrations with a Tech2/GDS2 scan tool Replace the EBTCM only after wiring and calibration check good

Code

P1571

Traction Control Torque Request Circuit

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Corvette, Camaro, Silverado, Tahoe, Impala
Related: No single generic twin. See OBD Codes List

What it means

P1571. Traction Control Torque Request Circuit. This Chevy-enhanced code applies to Corvette, Camaro, Silverado, Tahoe, Impala.

Findings, check these first

Open or shorted serial data line between the EBTCM and PCM
Failed electronic brake traction control module losing torque-request output
Corroded EBTCM connector from wheel-splash exposure
Mismatched PCM or EBTCM calibration after module replacement

Standard procedure

Scan both the PCM and EBTCM for codes; diagnose EBTCM codes first
Inspect the EBTCM connector and Class 2 serial data wiring for corrosion
Verify both modules carry matching calibrations with a Tech2/GDS2 scan tool
Replace the EBTCM only after wiring and calibration check good

Look up another code

Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.

Sources and review

Review: no source links are recorded for this entry.

Last updated 2026-09-13.

Report a correction for P1571. Include your vehicle, the issue and a source if you have one.

This fault is part of the GM ABS and StabiliTrak family. The GM ABS and StabiliTrak codes guide covers the check order.