C0110 on 2000-2006 Chevrolet Tahoe — ABS Pump Motor Circuit Malfunction
1 vehicles · 1 makes · $100-$700 repair
How to diagnose and fix C0110: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Chevrolet Tahoe · 2000–2006
GMT800 Tahoes commonly light the ABS, Traction Control and (on later trucks) StabiliTrak warnings simultaneously due to the Electronic Brake Control Module (EBCM) or, very often, its corroded frame-mounted ground. The dedicated EBCM ground on the driver-side frame rail is exposed to road salt and corrodes, causing intermittent module communication loss and codes like C0265. Internal EBCM solder-joint failures also occur. Normal service braking still works, but ABS/traction functions drop out.
Common Symptoms
- ABS, Traction and StabiliTrak lights on together
- Speedometer dropout or erratic (shared circuit)
- Code C0265 / loss of module communication
- ABS inoperative but normal pedal braking
- Intermittent lights that come and go over bumps
How to Fix
Pull chassis 'C' codes first. Before condemning the module, locate and clean/re-terminate the EBCM ground on the frame rail (a cheap, common fix). If the module itself is at fault (C0265/C0110 with confirmed internal fault), options are a rebuild/repair service for the EBCM or a replacement module that must be programmed to the VIN. Inspect the wheel-speed sensor circuits as well. Ground repair can be under $100; module rebuild/replacement runs several hundred.
Sources for this issue (1)
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C0110 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C0110 mean?
C0110 stands for "ABS Pump Motor Circuit Malfunction." This code indicates a problem in the ABS pump motor circuit. The pump motor pressurizes brake fluid so the ABS and stability systems can rapidly modulate the brakes, and the control module detected an electrical fault — such as an open, short, or failure to run when commanded. With the pump unavailable, ABS and stability/traction control are typically disabled, though the conventional hydraulic brakes still function. The warning lights for ABS and traction usually illuminate.
What are the most common causes of C0110?
The most common causes of C0110 are: Failed ABS pump motor, Faulty pump motor relay, Open or shorted pump motor circuit/wiring, Corroded or loose ABS module connector, Poor ground to the ABS hydraulic unit, Low battery voltage or weak charging system, Internal failure of the EBCM/ABS module. The specific cause varies by vehicle.
How much does it cost to fix C0110?
Repair costs for C0110 range from $100 to $700, depending on the vehicle and root cause.
Which vehicles are affected by C0110?
Au7o has documented C0110 across 1 vehicle models from 1 manufacturers: Chevrolet.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.