2003-1999 GMC SIERRA (6.0. 5.3, 4.8)

What’s that you say? A 55-65% power gain is impressive, but you want more? Well rest assured, with the best upgrade path in the industry, ProCharger has you covered. For modified trucks and SUVs, ProCharger offers a wide range of upgrades such as high-flow 3-core air-to-air intercoolers, supercharger upgrades, and helical-cut gears. Everything from mild to wild, ProCharger has you covered, period!

For the best system efficiency and performance, look no further than ProCharger’s HO Intercooled Systems and Kits. Complete systems for 1999-2003 GM Truck & SUVs offer industry leading 55-65% power gains on stock engines running pump gas at 8-9 psi (5.3/4.8) or 7-8 psi (6.0) of intercooled boost. For modified engines, HO Intercooled Tuner Kits and higher boost levels are available. These offerings feature the patented and proven P-1SC supercharger, and highly effective air-to-air intercooler system.

Tuner Kits: These kits make sense for someone wanting to perform custom tuning of the car and push the envelope in performance.  Will most likely be experimenting with alternative fuels such as 93 octane, race fuel, E85 fuel, and methanol supplemental fuel.  In addition, possibly changing engine components like heads, headers, exhaust, and cams for the engine. No tuning or fuel components provided.

*Higher boost levels are available for modified engines.

Want to learn about HO vs. Stage II, Tuner Kits vs. Systems, Intercooling tech and much more? Click the button below to visit the ProCharger 101 page.

The HO Intercooled Intercooled systems utilize the patented, proven and self-contained P-1SC ProCharger, a compact supercharger drive system, a highly-effective, air-to-air intercooler, OEM-quality mounting brackets, fuel system upgrade (FMU and pump), ProFlo anti-surge / bypass valve, tuning and all necessary supercharger and intercooler tubes for installation onto your GM truck and SUV engine. ProCharger HO Systems come standard with a 2-core intercooler; the larger 3-core intercooler is an optional upgrade.

ProCharger supercharger systems feature easy installation, minimal relocation of components, no need for external oil feed and return lines and avoids having to deal the complexity and maintenance issues of an air-to-water-to-air intercooler configuration. ProCharger systems for GM trucks and SUVs feature a visually appealing, “from the factory” look and come with a standard 3-year warranty on the intercooler and 1-year warranty on the supercharger (Optional 3-year supercharger warranty is available).

• Polished supercharger finish
• ProCharger D-1SC supercharger upgrade
• Helical Gear set for Noise Reduction (P-1SC-1 & D-1SC only)
• 3-Core Intercooler System Upgrade
• Omit FMU
• Omit in-line fuel pump

Click to call our sales staff or email us if you need any help. We will be happy to assist you with any questions you may have.

Mon – Fri 8am – 5:30pm CST
Phone – (913) 338-2886
Sales Email – [email protected]

Our catalogs feature much of this detail. You can either download a copy or have one mailed to you free of charge.

California approved products for street legal use (complete systems) will have an associated CARB EO# for compliance. For a full list of California and 50 state street legal systems, click below.