Description
Fuel Filter Assembly for 1992-2002 Chevy GMC 6.5L Diesel — Suburban, Silverado, Sierra, Tahoe, Yukon, Hummer H1
Looking for a fuel filter for your Chevy Suburban 6.5 diesel? Or maybe a GMC Sierra 2500 6.5 diesel fuel filter? This assembly fits them all. Whether you drive a 1994 K2500 work truck, a 1998 Suburban family hauler, a 1995 Tahoe, or a Hummer H1, this complete fuel filter assembly replaces your worn-out filter housing, heater, and filter element in one bolt-on job. OEM part number: 10226035.
If your current filter housing is cracked, leaking fuel, has a failed heater connector, or the water-in-fuel sensor is malfunctioning — replacing the entire assembly is more reliable (and often cheaper in labor) than piecing together individual components. This kit includes the filter head, metal housing with integrated fuel heater, mounting bracket, water sensor port, and a fresh filter element — all pre-assembled and ready to bolt on.
Why Replace the Whole Assembly?
The GM 6.5L diesel's fuel filter housing is a known failure point on high-mileage trucks. The plastic OEM housings warp over time from engine heat, causing air intrusion and hard-starting issues. The fuel heater element can short out, and the threaded fittings can strip. A complete assembly swap solves all these problems at once — and this aftermarket unit uses a metal housing that outlasts the factory plastic design.
ⓘ Fitment Note: This assembly fits 1992-2002 GM trucks and SUVs with the 6.5L V8 diesel (engine codes L49/L56/L57/L65). It also fits some 5.7L and 7.4L diesel/gas applications that used this filter style. Not compatible with 2001+ Duramax 6.6L (LB7/LLY/LBZ/LMM/LML/L5P) — those use a completely different filter system.
Key Features
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All-in-One Kit — Filter head, metal housing, fuel heater with connector, water-in-fuel sensor port, mounting bracket, O-rings, and filter element — everything pre-assembled
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Metal Housing Construction — Far more durable than OEM plastic under sustained engine bay heat and vibration
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Integrated Fuel Heater — Prevents fuel gelling in cold weather; essential for winter operation in northern climates
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Water-in-Fuel Sensor Port — Retains factory WIF sensor functionality; compatible with original wiring connector
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30-Micron Filtration Media — Cellulose/synthetic blend filter element traps contaminants before they reach the injection pump and injectors
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Pre-Threaded Mounting Points — Direct bolt-on — no drilling, tapping, or modifications needed
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Reusable Housing — When it's time for a filter change, just swap the TP1256 replacement element — no need to replace the entire assembly
Complete Vehicle Compatibility
Chevrolet
| Model |
Years |
Engine |
Notes |
| Blazer (Full-Size K5) |
1992–1999 |
6.5L V8 Diesel |
K5 Blazer / Tahoe predecessor |
| C1500 / Silverado 1500 |
1992–1999 |
6.5L V8 Diesel |
2WD 1/2-ton pickup |
| C1500 Suburban |
1992–1999 |
6.5L V8 Diesel |
2WD 1/2-ton SUV |
| C2500 / Silverado 2500 |
1992–2000 |
6.5L V8 Diesel |
2WD 3/4-ton pickup |
| C2500 Suburban |
1992–1999 |
6.5L V8 Diesel |
2WD 3/4-ton SUV |
| C3500 / Silverado 3500 |
1992–2002 |
6.5L V8 Diesel |
2WD 1-ton pickup |
| C3500HD |
1992–2002 |
6.5L V8 Diesel |
2WD heavy-duty chassis cab |
| Express 1500/2500/3500 |
1996–2002 |
6.5L V8 Diesel |
Full-size van |
| G20 / G30 |
1992–1996 |
6.5L V8 Diesel |
Predecessor to Express van |
| K1500 / Silverado 1500 4WD |
1992–1999 |
6.5L V8 Diesel |
4WD 1/2-ton pickup |
| K1500 Suburban |
1992–1999 |
6.5L V8 Diesel |
4WD 1/2-ton SUV |
| K2500 / Silverado 2500 4WD |
1992–2000 |
6.5L V8 Diesel |
4WD 3/4-ton pickup |
| K2500 Suburban |
1992–1999 |
6.5L V8 Diesel |
4WD 3/4-ton SUV |
| K3500 / Silverado 3500 4WD |
1992–2002 |
6.5L V8 Diesel |
4WD 1-ton pickup |
| P30 |
1992–1999 |
6.5L V8 Diesel |
Forward-control chassis (step van/motorhome) |
| Tahoe (2-door & 4-door) |
1995–1999 |
6.5L V8 Diesel |
Full-size SUV |
GMC
| Model |
Years |
Engine |
Notes |
| C1500 / Sierra 1500 |
1992–1999 |
6.5L V8 Diesel |
2WD 1/2-ton pickup |
| C1500 Suburban |
1992–1999 |
6.5L V8 Diesel |
2WD 1/2-ton SUV |
| C2500 / Sierra 2500 |
1992–2000 |
6.5L V8 Diesel |
2WD 3/4-ton pickup |
| C2500 Suburban |
1992–1999 |
6.5L V8 Diesel |
2WD 3/4-ton SUV |
| C3500 / Sierra 3500 |
1992–2002 |
6.5L V8 Diesel |
2WD 1-ton pickup |
| C3500HD |
1992–2002 |
6.5L V8 Diesel |
Heavy-duty chassis cab |
| G2500 / G3500 |
1992–1996 |
6.5L V8 Diesel |
Full-size van |
| K1500 / Sierra 1500 4WD |
1992–1999 |
6.5L V8 Diesel |
4WD 1/2-ton pickup |
| K1500 Suburban |
1992–1999 |
6.5L V8 Diesel |
4WD 1/2-ton SUV |
| K2500 / Sierra 2500 4WD |
1992–2000 |
6.5L V8 Diesel |
4WD 3/4-ton pickup |
| K2500 Suburban |
1992–1999 |
6.5L V8 Diesel |
4WD 3/4-ton SUV |
| K3500 / Sierra 3500 4WD |
1992–2002 |
6.5L V8 Diesel |
4WD 1-ton pickup |
| P3500 |
1992–1999 |
6.5L V8 Diesel |
Forward-control chassis |
| Savana 1500/2500/3500 |
1996–2002 |
6.5L V8 Diesel |
Full-size van |
| Yukon (2-door & 4-door) |
1992–1999 |
6.5L V8 Diesel |
Full-size SUV |
AM General
| Model |
Years |
Engine |
| Hummer H1 |
1994–2001 |
6.5L V8 Turbo Diesel |
Cross-Reference Part Numbers
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GM OEM: 10226035, 10154635, 10183997, 25176756
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Aftermarket: TP1256, BF1201, P550352, FS1295, PS7358
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ACDelco: TP1256, 33376, 33976
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WIX: 33379
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NAPA: 3960
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Other: 5742602, XF54719, F54719
Technical Specifications
| Specification |
Detail |
| Filtration Rating |
30 Micron (nominal) |
| Filter Media |
Cellulose / synthetic blend |
| Housing Material |
Metal (steel) with corrosion-resistant coating |
| Fuel Heater |
Integrated 12V heating element with OEM-style connector |
| WIF Sensor Port |
Compatible with factory water-in-fuel sensor |
| Inlet/Outlet Size |
3/8\" quick-connect (matches OEM) |
| Filter Replacement Interval |
Every 10,000-15,000 miles |
| Weight |
Approx. 2.6 lbs (1.17 kg) |
Installation Overview
- Relieve fuel system pressure and disconnect battery
- Disconnect fuel lines (quick-connect fittings) and WIF sensor connector
- Remove mounting bolts from old filter housing bracket
- Install new assembly — bolts directly to factory mounting points
- Reconnect fuel lines, WIF sensor, and heater connector
- Prime fuel system by cycling ignition key (ON for 10 seconds, OFF, repeat 3-4 times)
- Start engine and check for leaks at all connections
⚠️ Torque Warning: When tightening the filter cap onto the housing, hand-tighten firmly then add no more than 1/4 turn with a wrench. Over-tightening is the #1 cause of cap leaks and difficult future filter changes. The O-ring does the sealing — not raw torque.
FAQ
Q: Will this fit my 1994 Chevy K2500 with the 6.5L turbo diesel?
A: Yes. This assembly directly fits all 1992-2002 GM C/K 1500, 2500, and 3500 series trucks with the 6.5L V8 diesel engine, including your 1994 K2500.
Q: Does this include the filter element?
A: Yes. The assembly comes with a filter element pre-installed. When it's time for your next filter change, you can purchase our replacement filter element (sold individually or in value packs of 3-pack and 6-pack).
Q: My truck has a hard start and loses prime overnight. Will this fix it?
A: Very likely yes. Air intrusion through a cracked filter housing or failed O-rings is one of the most common causes of hard starting and prime loss on the GM 6.5L diesel. Replacing the complete assembly with new seals and housing eliminates these leak paths. Also check your lift pump and fuel lines if the problem persists.
Q: Is the fuel heater functional?
A: Yes. The integrated 12V fuel heater uses the OEM-style connector and activates automatically in cold temperatures to prevent fuel gelling and improve cold-start performance. It's essential if you operate in winter conditions.
Q: How does this compare to the OEM plastic housing?
A: The original GM housing (ACDelco 10226035) is plastic and known to warp, crack, and leak over time — especially on high-mileage trucks. This aftermarket replacement uses a metal housing that's significantly more durable under sustained engine bay heat. It meets or exceeds OEM filtration specifications at a fraction of the dealer price.
Q: Do I need to bleed the fuel system after installation?
A: Yes. After installation, cycle the ignition key to the ON position (not START) for 10 seconds, then OFF for 5 seconds. Repeat 3-4 times. This runs the lift pump and purges air from the system. You should hear the pump pitch change when air is purged. Then start the engine and let it idle for 2-3 minutes while checking for leaks.
Q: Will this fit my 2003 Duramax?
A: No. This assembly is for the 6.5L diesel (1992-2002). Duramax 6.6L engines (2001+) use an entirely different filter system. Please check our Fuel Filter collection for Duramax-compatible options.
Q: What's the difference between the filter element and the full assembly?
A: TP1256 is the filter element (the replaceable cartridge with cap and gasket). 10226035 is the complete assembly — housing, heater, bracket, and filter element together. This product is the complete assembly. If you only need replacement filter elements, see our TP1256 filter element multipacks.
📦 Need Replacement Filters?
Save on future filter changes with our TP1256 filter element value packs:
For full installation instructions, see our DIY fuel filter replacement guide with step-by-step video.
