What does C1243 mean on a Chevy?

C1243. BPMV Pump Motor Stalled. Applies to Silverado, Sierra, Tahoe, Suburban, Avalanche.

What causes C1243 on a Chevy?

Seized ABS pump motor Internal hydraulic blockage in the BPMV Corroded pump motor connector causing high resistance Low voltage during the ABS self-test Failed EBCM pump motor driver

How do I fix C1243 on a Chevy?

Command the pump motor with a scan tool and listen for operation Check pump power and ground while the motor is commanded on Inspect the motor connector for heat damage and corrosion Verify charging system voltage during the self-test Replace the BPMV assembly if the motor stalls with good power and ground

Code

C1243

BPMV Pump Motor Stalled

Category: Chassis
Severity: Chassis Warning Light
Applies to: Silverado, Sierra, Tahoe, Suburban, Avalanche
Related: No single generic twin. See OBD Codes List

What it means

C1243. BPMV Pump Motor Stalled. This Chevy-enhanced code applies to Silverado, Sierra, Tahoe, Suburban, Avalanche.

Findings, check these first

Seized ABS pump motor
Internal hydraulic blockage in the BPMV
Corroded pump motor connector causing high resistance
Low voltage during the ABS self-test
Failed EBCM pump motor driver

Standard procedure

Command the pump motor with a scan tool and listen for operation
Check pump power and ground while the motor is commanded on
Inspect the motor connector for heat damage and corrosion
Verify charging system voltage during the self-test
Replace the BPMV assembly if the motor stalls with good power and ground

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 2026-09-25.

Report a correction for C1243. 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.