FASS Fuel Pump System TSC11165G for Chevrolet Silverado GMC Sierra
This fuel pump is engineered as a direct replacement for the Chevrolet Silverado GMC Sierra. Manufactured to meet or exceed OEM specifications, it delivers reliable performance in demanding conditions. Each unit is tested for fuel flow, pressure rating, and durability before leaving the factory to ensure consistent quality across every order.
Vehicle Compatibility
| Application | Details |
|---|---|
| GMC Duramax Diesel 6.6L LML 165GPH Replace Part Number:FASTC11150G, T C11 150G, TC11150G, TS C11 165G, TSC11165G Application:Fit for following models:6.6L Duramax Diesels 2011 | See product specifications |
| Chevrolet Silverado 2500 HD LT Crew Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD LT Extended Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD LT Standard Cab Pickup 2 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD LTZ Crew Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD LTZ Extended Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD WT Crew Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD WT Extended Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 2500 HD WT Standard Cab Pickup 2 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 3500 HD LT Cab & Chassis 2 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 3500 HD LT Cab & Chassis 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
| Chevrolet Silverado 3500 HD LT Crew Cab Pickup 4 | Door 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged6.6L Duramax Diesels 2011 |
Replaces OEM Part Numbers
FASTC11150G • TC11150G • TSC11165G • Application • following • models • Duramax • Diesels • Chevrolet • Silverado • Pickup • 4-Door
Signs You Need a Replacement
If your equipment is showing any of these symptoms, the fuel pump may be the cause:
- Engine cranks but won’t start — The pump may have lost prime or stopped delivering fuel. Check for fuel at the filter outlet before replacing the pump.
- Stalling under load — A weak pump can’t maintain pressure at high demand. The engine runs fine at idle but dies when you put it to work.
- Fuel pressure warning (if equipped) — Modern Chevrolet equipment monitors fuel rail pressure. A low-pressure warning often means the pump is failing.
- Loud whining from fuel system — A failing pump makes a high-pitched whine that gets louder as it warms up. Normal pump noise is a low hum.
- Air in fuel lines — If you see bubbles in the transparent fuel line or the primer bulb won’t stay firm, the pump may be drawing air through a worn seal.
- Excessive return flow — Too much fuel returning to the tank instead of reaching the injectors indicates internal pump wear.
Before You Replace the Pump
Before replacing the pump, check the fuel filter and fuel lines for restrictions. A blocked filter causes the same symptoms as a failing pump on Chevrolet equipment. When installing the new pump, fill it with clean fuel before connecting the lines — this reduces priming time and prevents dry-run damage. After installation, bleed the system fully and check for leaks at all connection points. Replace the fuel filter at the same time as the pump to protect the new unit from debris.
Frequently Asked Questions
Which Chevrolet models does this part fit?
Refer to the Vehicle Compatibility table above for the full list of Chevrolet models. Each listing includes the body type, engine, and production years. Match your vehicle’s engine code (stamped on the engine block) against the listed codes to confirm.
Can I cross-reference FASTC11150G with TC11150G?
Yes. Both FASTC11150G and TC11150G are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
How long does a Chevrolet fuel pump typically last?
Fuel pump life varies by application, but on Chevrolet equipment you can generally expect 5,000 to 10,000 hours of operation. Running the tank dry, using contaminated fuel, or neglecting the fuel filter are the top causes of premature failure.
What tools do I need to install this on a Chevrolet?
Standard metric hand tools will handle most of the job – sockets, wrenches, and a torque wrench. For Chevrolet equipment, check the specific service manual for any special tools or torque values.
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