1999 GMC Jimmy Engine Additives

Keep Your 1999 GMC Jimmy in Top Shape with a Quality Engine Additive

When it comes to maintaining or upgrading your 1999 GMC Jimmy, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Engine Additive for your Jimmy. We currently carry a top Engine Additive in stock that is built to last. Whether you’re replacing a damaged Engine Additive or looking to upgrade, our selection for the 1999 GMC Jimmy ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Coolant/Antifreeze and Fluids to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1999 GMC Jimmy running smoothly and looking great.

Essential 1999 GMC Jimmy Engine Additives

Powertrax – Grip LS Traction System (Part No.LS247528)

Grip LS Traction System

from

$499.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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Powertrax – Lock Right Locker (Part No.1910-LR)

Lock Right Locker

from

$376.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
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    ATP – Remanufactured Front Differential Assembly (Part No.111503)

    Remanufactured Front Differential Assembly

    from

    $3289.99
    Brand new units are no longer available. ATP’s fully remanufactured differentials offer the best alternative to bench rebuilding or buying used. They are carefully inspected and totally reconditioned to meet original specifications and include new bearings and seals. Our units are ready to install, just add oil.

    Product Features:
    • Ready to install, just add oil
    • Totally reconditioned
    • New bearings
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    Richmond Gear – Differential Spool (Part No.81-1028-1)

    Differential Spool

    from

    $259.99
    Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

    Product Features:
    • For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
    • The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
    • Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
    • Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
    • Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
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    Richmond Gear – Differential Spool (Part No.81-1033-1)

    Differential Spool

    from

    $267.99
    Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

    Product Features:
    • For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
    • The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
    • Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
    • Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
    • Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
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    Most Popular Posi Units and Component for 1999 GMC Jimmies

    Enhance your 1999 GMC Jimmy with this popular Posi Units and Component we have in stock, for $499.99.

    Powertrax – Grip LS Traction System (Part No.LS247528)

    Grip LS Traction System

    from

    $499.99
    For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
    See More

    FAQs for 1999 GMC Jimmy Engine Additives

    What’s the price range for 1999 GMC Jimmy Engine Additives?

    We currently have just one Engine Additives for the 1999 GMC Jimmy in stock: Grip LS Traction System and it costs $499.99.

    Does Advance Auto Parts sell Engine Additives for other GMC Jimmy model years?

    Yes, we carry Engine Additives for 27 model years of GMC Jimmies between 1970 and 2001. The following model years are the most popular for Engine Additive purchases: 2001, 2000, 1998, 1997, 1996, 1995, 1991, 1990, and 1989.

    Does Advance Auto Parts sell Engine Additives for any other 1999 GMC models?

    Yes. We stock Engine Additives for 10 other popular 1999 GMC models. Some of the most popular are 1999 Sonoma Engine Additives, 1999 K3500 Engine Additives, 1999 Safari Engine Additives, 1999 Savana 2500 Engine Additives, and 1999 Sierra 2500 Engine Additives.

    What types of Engine Additives do you sell for my 1999 GMC Jimmy?

    We currently have just 1 Engine Additive in stock for a 1999 GMC Jimmy, and as of 11/2/25, it is a Posi Units and Component.

    Can I get help with 1999 GMC Jimmy Engine Additive orders?

    Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Additives and more.

    What is your return policy for GMC Jimmy Engine Additives?

    Advance Auto Parts keeps returns simple. For new GMC Jimmy Engine Additives and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.