1990 GMC S15 Engine Additives
Keep Your 1990 GMC S15 in Top Shape with Quality Engine Additives
Whether you’re repairing or upgrading your Engine Additive, using high-quality parts is key to keeping your 1990 GMC S15 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Posi Units and Components. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1990 GMC S15 Engine Additive at Advance Auto Parts is around $664.99, with a range that starts at $499.99 and goes up to $829.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up and Grip LS Traction System start at just $499.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Additive, don’t forget to check out other key components like Coolant/Antifreeze and Fluids. At Advance Auto Parts, we’re here to help you keep your 1990 GMC S15 in peak condition, inside and out.
Find Your Specific 1990 GMC S15 Engine Additives
Looking for the perfect Engine Additive for your 1990 GMC S15? You’re in the right place. Below, you’ll find links to various types of Engine Additives that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Additives, ensuring durability and a precise fit for your GMC S15. Whether you’re driving a 1990 model or another popular model year like
1983,
1984,
1985,
1986,
1987,
1988, and
1989, we’ve got you covered. Purchasing Engine Additives from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Additives that fit your vehicle.
Essential 1990 GMC S15 Engine Additives
Yukon Gear – Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up (Part No.26018)
from
$829.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.
Product Features:
See More
Product Features:
- Fits GM 7.625″ with 28 spline axles
- 3.23 ratio and up only
- 4-spring, clutch style positraction
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
Powertrax – Grip LS Traction System (Part No.LS247528)
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
Yukon Gear – Dura Grip Positraction For GM 7.5" & 7.625" With 26 Spline Axles, 3.23 & Up (Part No.26017)
from
$889.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.
Product Features:
See More
Product Features:
- Fits GM 7.5″ and 7.625″ with 26 spline axles
- 3.23 ratio and up only
- 4-spring, clutch style positraction
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
Popular 1990 GMC S15 Engine Additives Categories
Most Popular Posi Units and Components for 1990 GMC S15s
Enhance your 1990 GMC S15 with one of the 2 Posi Units and Components we have in stock, starting at just $499.99.
Yukon Gear – Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up (Part No.26018)
from
$829.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.
Product Features:
See More
Product Features:
- Fits GM 7.625″ with 28 spline axles
- 3.23 ratio and up only
- 4-spring, clutch style positraction
- Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
- Fully rebuildable
- Assembled in the USA
Powertrax – Grip LS Traction System (Part No.LS247528)
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 1990 GMC S15 Engine Additives
What are the best-selling Engine Additives for 1990 GMC S15s?
Out of 2 Engine Additives that fit 1990 GMC S15s, the following parts are the top sellers:
- Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up (11644905) – $829.99
- Grip LS Traction System (11470450) – $499.99
What’s the price range for 1990 GMC S15 Engine Additives?
The prices of Engine Additives for the 1990 GMC S15 range from $499.99 up to $829.99 for the most premium parts.
What is the average price of an Engine Additive for a 1990 GMC S15?
The average price for Engine Additives for the 1990 GMC S15 is $664.99. Keep in mind the variety of part types within our Engine Additive category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Additives for other GMC S15 model years?
What are the cheapest Engine Additives for my 1990 GMC S15?
The cheapest 1990 GMC S15 Engine Additives we carry are:
- Grip LS Traction System (11470450) – $499.99
- Dura Grip Positraction For GM 7.625" With 28 Spline Axles, 3.23 & Up (11644905) – $829.99
Does Advance Auto Parts sell Engine Additives for any other 1990 GMC models?
Yes. We stock Engine Additives for 11 other popular 1990 GMC models. Some of the most popular are 1990 Jimmy Engine Additives, 1990 K1500 Engine Additives, 1990 C1500 Engine Additives, 1990 K3500 Engine Additives, and 1990 Safari Engine Additives.
What types of Engine Additives do you sell for my 1990 GMC S15?
We currently have just 1 Engine Additive in stock for a 1990 GMC S15, and as of 11/2/25, it is a Posi Units and Component.
Can I get help with 1990 GMC S15 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 S15 Engine Additives?
Advance Auto Parts keeps returns simple. For new GMC S15 Engine Additives and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.