Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the C0271 Hummer code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The Electronic Brake Control Module (EBCM) set the Diagnostic Trouble Code (DTC) when identifies a malfunction within the EBCM.
Need more information on how to fix the C0271 Hummer code? Get Access to Factory Service Manuals
Get the C0271 Hummer code diagnosed by a professional: Find a repair shop in your area