Remanufactured 4L60E Transmission

The 4L60E is one of the most widely used automatic transmissions GM ever produced. Found in millions of trucks, SUVs, and vans, it powered everything from half-ton pickups to daily-driven family vehicles.

But wide use also means wide exposure to failure. Heat, towing, stop-and-go driving, and age eventually expose the 4L60E’s known weak points—often resulting in slipping, delayed shifts, or complete failure.

ACE’s remanufactured 4L60E is built to correct those weak points, not just replace worn parts. Each unit is fully remanufactured, dyno tested, and shipped ready to install—so your shop can fix the problem once and move on.

Built to Correct the 4L60E’s Known Weak Points

The factory 4L60E design works—but only within limits. ACE remanufactures every unit with targeted upgrades to improve durability and reliability under real-world conditions.

Key build upgrades include:

  • Upgraded torque converter with improved lock-up clutch material
  • Reinforced reaction and sun shell components, addressing one of the most common failure points
  • Upgraded clutch packs and steels using high-energy friction materials
  • Valve body reconditioning to correct pressure loss and erratic shifting
  • Pump inspection and re-machining to restore proper line pressure
  • All new seals, bushings, bearings, and wear components
  • Full dyno testing under load to verify shift timing, converter lock-up, and pressure stability

This approach turns a historically fragile unit into a dependable replacement your shop can install with confidence.

Common 4L60E Transmission Problems

Shops see the same 4L60E failures over and over:

  • Sun shell failure, often resulting in loss of reverse or 2nd/4th gear
  • Torque converter clutch slip or shudder
  • 3–4 clutch burn-up due to heat and pressure loss
  • Delayed engagement when shifting into drive or reverse
  • Overheating, especially in towing or stop-and-go use

ACE’s remanufacturing process addresses these problems at the component level, reducing the risk of repeat failures and comebacks.

What’s Included with Every ACE 4L60E

Each ACE 4L60E transmission includes:

  • Fully remanufactured and dyno-tested transmission
  • Upgraded torque converter
  • All new clutches, seals, bushings, and wear components
  • Mobil 1 synthetic transmission fluid, included with shipment
  • ACE’s comprehensive warranty —
    Parts, labor, shipping, and Mobil 1 fluid included.
    (see full warranty details)

Everything arrives ready for installation—no hidden add-ons or missing components.

Compatible Applications

The 4L60E transmission is commonly found in:

  • Chevrolet Silverado 1500
  • GMC Sierra 1500
  • Chevrolet Tahoe / Suburban
  • GMC Yukon / Yukon XL
  • Chevrolet Express / GMC Savana vans
  • Other GM rear-wheel-drive and 4WD applications

Exact compatibility varies by year, engine, and drivetrain—confirm by VIN to ensure proper fitment.

Shipping That Keeps Jobs Moving

ACE understands that many 4L60E repairs are daily drivers or work vehicles.
That’s why we prioritize fast, reliable shipping.

  • Same-day shipping available on in-stock units
  • Secure crating to protect transmissions during transit
  • Nationwide carrier network with tracking provided

We ship directly to your shop or installer to minimize downtime.

Core Return Policy — No Upfront Deposit

ACE uses a shop-friendly “Due On Receipt” core policy:

  1. No upfront core deposit charged
  2. Core invoiced on paper only
  3. 120 days to return the rebuildable core
  4. Prepaid return labels included
  5. Core invoice cleared once received

No cash tied up. No surprises.

Warranty Coverage You Can Stand Behind

Every ACE 4L60E transmission includes full coverage for:

  • Parts and labor
  • Inbound and outbound shipping for approved claims
  • Mobil 1 synthetic transmission fluid

This warranty is designed for real-world driving—not just test-drive conditions. Full details available at acetransmissionreman.com/warranty.

Installation Notes & Best Practices

To protect performance and warranty coverage:

  • Flush or replace cooler lines before installation
  • Inspect for debris from prior failure
  • Perform TCM relearn or adaptive reset if applicable
  • Verify driveline angles and mounts to prevent vibration
  • Use only Mobil 1 ATF or GM-approved equivalent

Skipping these steps is a common cause of repeat issues on 4L60E replacements.

Fleet & Wholesale Support

ACE works with:

  • Transmission rebuild shops
  • General repair facilities
  • Fleet maintenance teams
  • High-volume service centers

Wholesale accounts receive volume pricing and dedicated support. Apply at acetransmissionreman.com/wholesale.

Why Shops Still Rely on the 4L60E Platform

Despite its reputation, the 4L60E remains on the road in massive numbers.
Customers keep these vehicles because they’re paid off, familiar, and still useful.

ACE supports that reality by delivering remanufactured units that address the design’s known limitations—so your shop can deliver a reliable fix instead of a temporary repair.

4L60E Transmission FAQs

Q: Is the 4L60E suitable for towing after remanufacture?
Yes. ACE builds include upgraded components designed to handle light-to-moderate towing.

Q: Does ACE include the torque converter?
Yes. Every unit ships with an upgraded torque converter.

Q: Is programming required after installation?
Some vehicles may require a relearn or adaptive reset using a GM-capable scan tool.

Q: Does the transmission ship filled with fluid?
Fluid is included with the shipment and added during installation to prevent leaks in transit.

Q: How fast can ACE ship a 4L60E?
Most in-stock units ship same-day and arrive within 2–3 business days.

The Bottom Line

The 4L60E doesn’t have to be a gamble.
ACE’s remanufactured 4L60E is built to correct known failures, stabilize performance, and reduce comebacks.

Fix it once. Install with confidence.
That’s the ACE standard.