DW400 Fuel pump module for 1999-04 Silverado/Sierra

Name: DW400 Fuel pump module for 1999-04 Silverado/Sierra
Brand: DeatschWerks
SKU: 9-401-7010
Price: 429.97 USD
Availability: InStock
Rating: 4.6 (5 reviews)

DW400 Fuel pump module for 1999-04 Silverado/Sierra - Main image

DW400 Fuel pump module for 1999-04 Silverado/Sierra - View 2

DW400 Fuel pump module for 1999-04 Silverado/Sierra - View 3

$429.97 ~~$589~~ In stock

Category: Electric Fuel Pump

DW400 Pump Module for Chevy Silverado 1500/2500/3500 & GMC Sierra 1500/2500/3500 1999-2004 V8 4.8L/5.3L/6.0L Excl Flex Fuel

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Thomas Z. ★★★★★ Oct 21, 2026

First time replacing a fuel pump on my '03 Sierra, and this module dropped right in without any modifications. The pump is noticeably quieter than the old one and my truck starts instantly now.

John O. ★★★★★ Oct 20, 2026

Took about two hours to drop the tank and swap, but the 4.8L fired up on the first crank and idles smooth as stock. The module fit the 1999 Silverado mounting points perfectly, no trimming needed. Worth every penny for the peace of mind on a daily driver.

Nicholas S. ★★★★★ Oct 19, 2026

Finally got around to swapping out my old pump, and the DW400 fit the tank perfectly without any modifications. Idle pressure is steady at 58 psi, and the truck starts instantly now even after sitting for a week.