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8 Fuel Injector 17113553 for Chevy Silverado & GMC Sierra – 2026 Technical Authority Guide
What the 17113553 Is and What It Fits
The GM Genuine 17113553 / ACDelco 217-3028 is an 8-injector multiport fuel injection (MFI) spider assembly for GM L31 5.7L and L30 5.0L Vortec engines (RPO codes L31 and L30) in 1996-2002 GMT400 and GMT800 trucks. It replaces the failure-prone CSFI poppet-nozzle design (GM 19210688) with true electronic MFI: one solenoid-actuated injector at each intake port.
The 8 Fuel Injector 17113553 kit from Koeep is batch-tested to a static flow rate of 22.5-23.0 lb/hr at 43.5 PSI (3.0 bar) across all eight ports, inside the ±2.5% variance threshold set by 2026 CARB aftermarket compliance guidelines.
Any 2026 unit you buy, aftermarket or NOS, must meet SAE J1832 (injector flow characterization), ISO 15500-3 (CNG/LPG adaptability), and ASTM D975-25 (biodiesel blend tolerance to B20). The kit clears all three.
Inside the MFI Spider: Materials and Electronics
The old CSFI layout used a central poppet body with barbed nozzles and ball-check valves, with fuel passing through passively on pressure differential. The 17113553 replaces all of it with eight discrete, sequentially fired solenoid injectors in one central manifold body.
Body, Needle, and Seat
Injector bodies are glass-fiber-reinforced PPS (polyphenylene sulfide) thermoplastic per SAE J2642 (2026). The material resists fuel swelling and thermal creep, runs continuously at up to 175°C, and stays dimensionally stable across the -40°C to +125°C underhood envelope.
The pintle needle is hardened 440C martensitic stainless steel running against a tungsten-carbide seat. That hardness gap (HRC 58 vs. HRC 72) eliminates microwelding and seat erosion through 500 million cycles or more per the ISO 15500-2 2026 durability protocol.
Coil, Connector, and Filtration
Class-H (180°C) enameled copper windings read 12.0-12.8 Ω at 20°C across pins A and B of the 4-pin Metri-Pack connector. That keeps the GM PCM injector driver FETs (1.0-1.2A peak-and-hold) inside their safe-operating area, worth noting on a fleet full of aged PCMs. Response time lands in SAE J1832 Class A at 1.2ms or less, with the peak-and-hold waveform verified per ISO 15500-2.
The inlet filter basket is a 30-micron sintered 316L stainless-steel mesh, a 3x gain in particulate capture over the legacy 70-micron brass screen, and it passes the SAE J905 fuel filtration test. Ford's 5.4L Triton and Toyota's 4.7L 2UZ-FE both moved to similar solenoid-MFI layouts by MY2005, so this retrofit puts the L31 on the same architecture.
Spec Matrix: 17113553 MFI vs. GM 19210688 CSFI
Every value below comes from the engineering comparison behind this kit. Check a seller's numbers against it before you spend money.
| Parameter | GM 17113553 (MFI Upgrade) | GM 19210688 (CSFI Legacy) |
|---|---|---|
| Injector type | Electronic solenoid-actuated MFI, 8x discrete | Central poppet-valve CSFI, ball-check passive |
| Static flow rate | 22.5-23.0 lb/hr @ 43.5 PSI (3.0 bar) | ~19-21 lb/hr, degrades with wear |
| Coil resistance | 12.0-12.8 Ω @ 20°C | N/A, single central solenoid (~1.6-2.0 Ω) |
| Body material | PPS, glass-fiber reinforced (SAE J2642) | Nylon 6/6, moisture-absorbent |
| Valve seat | Tungsten-carbide / 440C SS (HRC 72/58) | Brass poppet with rubber diaphragm |
| Filtration | 30-micron sintered 316L SS mesh | 70-micron brass screen |
| Sealing | Viton® (FKM) O-rings, SAE J1681 | Buna-N (NBR), E10 only |
| Connector | 4-pin Metri-Pack 150.2 series | 4-pin Metri-Pack, same form factor |
| OEM cross-references | GM 17113553, ACDelco 217-3028, GM 89060413 | GM 19210688, ACDelco 217-155 |
Verification, Certificates, and Service Life
Every kit ships serialized and flow-bench audited, with a digital calibration certificate traceable to SAE J1832 reference conditions (n-heptane at 21°C, 3.0 bar differential pressure).
Material and Build Standards
- Body: glass-fiber-reinforced PPS per SAE J2642:2026, validated for continuous E10-E85 exposure at underhood temperatures to 175°C.
- Seals: Viton® FKM (ASTM D1418 Type 5) O-rings per SAE J1681 Rev. D (2026), rated to 85% ethanol, so E85 is covered along with aliphatic and aromatic hydrocarbon resistance.
- Inlet filter: 30-micron sintered 316L stainless steel per ASTM A240.
DTC Coverage and Drive-Cycle Monitors
The assembly directly resolves DTCs in the P0171-P0175 (fuel trim), P0200 (injector circuit), P0300-P0308 (cylinder misfire), and P0420-P0430 (catalyst efficiency) ranges.
After installation, the GM Vortec PCM (calibration IDs 16263494 through 16264711) completes OBD-II monitors for Component ID $01-$08 (misfire), $21 (fuel system), and $31-$32 (catalyst) within one FTP-75 cycle under SAE J1979-2 (2026).
Service Life and Fleet Use
The Koeep SKU 17113553-8KIT is projected for 2026-2030 service, or 100,000-120,000 miles under normal duty with Top Tier™ certified detergent fuel (GM TSB 05-06-04-022M). IHS Markit VIO data projects the remaining GMT400/GMT800 fleet lifecycle at 15-20 years from 2026. The legacy unit crosses to GM 19210688 and ACDelco 217-155; 2026 NAPA/Echlin cross-reference is CRB 218302.
Fleet retrofitters specify this upgrade for GMT400-based service vehicles: utility beds, ambulance upfits, and snow-plow configurations. It works with Ford 4R70W-derived E4OD transmission controllers through SAE J1850 VPW gateway modules, and with Toyota A340E-based transfer-case logic through the engine load signal.
Tesla's 2026 service bulletin SI-2026-003 on legacy fleet electrification names the GMT400 a primary target for ICE-to-BEV conversion cores. For trucks in that pipeline, this MFI unit is the last-ICE service component before conversion.
Related Parts for Other GM Trucks
Different GM truck? A 2006-2007 Silverado or Sierra 2500/3500 with the 6.6L takes the diesel fuel injector for Chevrolet Silverado and GMC Sierra 2500/3500 instead. A 2007-2009 1500 with the 4.8L or 5.3L takes the 8-piece fuel injector set for those engines. Both sit in the full Air & Fuel Delivery catalog on Koeep.
A truck this age rarely needs fuel parts alone. If your Suburban, Yukon XL, or pickup wanders on the highway, read the Koeep guide to the Complete Front Rack and Pinion Tie Rods Sway Bars Set for Silverado Sierra Yukon XL 1500 for the steering refresh that pairs with it.
Diagnostic FAQ: Codes, Hot Restarts, and Fitment
P0171 and P0174 keep coming back. Will this kit clear them?
These are the most common codes tied to aged CSFI poppet injectors. After the MFI install, STFT via SAE PID $06 should stabilize within ±5% at hot idle (ECT ≥90°C). If lean persists, inspect intake manifold gaskets (GM TSB 00-06-01-023B) and the MAF for fouling. 2026 CAN-bus 3.0 scan tools (Snap-on ZEUS+, Autel MaxiSYS MS919) add automated injector balance-rate testing via Mode $08 bidirectional controls per SAE J1979-2.
Which cylinders misfire when the poppets fail?
On L31 and L30 engines, cylinder-specific misfires cluster at P0303/P0305 on Bank 1 and P0304/P0306 on Bank 2, from uneven fuel delivery through collapsed poppet nozzles. The MFI spider meters fuel at each intake valve and removes that failure mode. Confirm with Mode $06: misfire counts above 20 per 200-revolution window (TID $53/CID $01-$08) point to the injector once compression and ignition test good.
What does a P0200 code mean on this system?
An open or short in the injector driver circuit. Measure across the 4-pin Metri-Pack connector: pins A-B (Bank 1, cylinders 1-3-5-7) and pins C-D (Bank 2, cylinders 2-4-6-8) should each read 3.0-3.2 Ω, four injectors in parallel at about 12.4 Ω each. An open circuit or a short below 1 Ω calls for replacement. On EV-converted GMT400 trucks, an AEM EV VCU200 gateway translates GM VPW (J1850) to CAN 2.0B, keeping injector diagnostics visible.
Why does the truck crank a long time when hot?
Old poppets leak residual fuel pressure into the intake after a hot shutdown and flood the engine. The MFI pintles seal positively, holding residual rail pressure above 30 PSI for 10 minutes or longer per the SAE J2044 leak-down test. Verify with a 0-100 PSI gauge at the service port on the upper intake: pressure should hold within 5 PSI over 10 minutes. If it still decays, suspect the in-tank fuel pump check valve (GM 25168730).
Did the old injectors cause my P0420 or P0430?
Chronic lean misfire from worn poppets often damages the upstream catalytic converter before the injectors get replaced. After the install, watch the downstream HO2S sensors (Bank 1 and Bank 2 Sensor 2) via Mode $01 PID $14/$18. Switching between 0.1 and 0.9V at 1 Hz or faster confirms catalyst degradation. 2026 CARB executive order D-193-162 permits direct-fit converters (MagnaFlow 23412, Walker 16390) for L31 with verified fuel-system correction.
Will it fit my truck, and does the ECM need a reflash?
The kit covers 1996-2002 Chevrolet Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe, and Express 1500-3500, plus GMC Sierra, Yukon, and Savana on L31 5.7L and L30 5.0L Vortec engines. The swap is plug-and-play on PCM calibration ID 16263494 or later, with no ECM reflash. The 4-pin Metri-Pack 150.2 connector matches the stock form factor and is sealed to IP67 per USCAR-2 Rev. 8, so the factory wiring plugs straight in.
Order the 8 Fuel Injector 17113553 for Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, and Yukon, or browse the full Air & Fuel Delivery catalog on Koeep.
Fleet and bulk buyers: submit an RFQ through the request-for-quote page, email support@koeep.com, or message us on WhatsApp.
- GM TSB 06-06-04-003M: Vortec fuel-system service life projection (100,000-120,000 miles)
- GM TSB 05-06-04-022M: Top Tier™ detergent fuel recommendation
- GM TSB 00-06-01-023B: intake manifold gasket inspection for persistent lean codes
- SAE J1832 (2026) and SAE J1979-2 (2026): injector flow characterization and OBD-II PID protocols
- 2026 CARB executive order D-193-162: direct-fit converter approval for L31 applications
- Tesla service bulletin SI-2026-003: legacy fleet electrification conversion targets
- 8 Fuel Injector 17113553 for Chevrolet Silverado Suburban Tahoe GMC Sierra Yukon (Koeep product page)
- Air & Fuel Delivery Parts | Koeep Auto & Moto Components
- Complete Front Rack and Pinion Tie Rods Sway Bars Set for Silverado Sierra Yukon XL 1500 (Koeep blog)