Aisin AS69RC Transmission Rebuild & Repair in Glendale, AZ (Ram HD)

Sun West Transmissions — Glendale, AZ. Free estimates, honest diagnosis and a 3-year / 40,000-mile warranty on qualifying rebuilds and replacements.

The Aisin AS69RC is the updated heavy-duty six-speed automatic that Ram uses behind its highest-output 6.7L Cummins diesels. It is the successor to the AS68RC, revised to handle the substantial torque increase that came with newer high-output Cummins engines. You will find it in late-model Ram 3500 pickups built for maximum towing, as well as Ram chassis cab trucks used for commercial work. These are trucks that pull heavy fifth wheels, gooseneck trailers and equipment loads, often for long distances.

Sun West Transmissions in Glendale diagnoses, repairs and rebuilds the AS69RC. When a truck like this is down, it often means lost work or a cancelled trip, and we work to get it diagnosed accurately so the right repair is done the first time.

AS69RC Applications

• Ram 3500 pickups with the high-output 6.7L Cummins in recent model years
• Ram 3500, 4500 and 5500 chassis cab trucks with the Cummins in certain configurations

Standard-output Ram diesel pickups commonly use the 68RFE, while earlier high-output and chassis cab trucks used the AS68RC. We confirm your transmission from the truck’s build information.

What Changed from the AS68RC

The AS69RC keeps the commercial-grade layout of its predecessor but adds updated internal components and calibrations to handle more torque. The control software works closely with the engine and exhaust brake, managing shift timing, converter lockup and downhill grade braking. Because these trucks are relatively new, many are still under factory coverage, and owners should check with a Ram dealer if their truck may still be covered.

Problems We Look For on the AS69RC

Shift Quality Complaints

Harsh downshifts, a clunk at low speeds or inconsistent upshifts can be related to software, adaptive values, fluid level or valve body wear. A scan tool and road test help determine which.

Heat from Heavy Towing

Even a strong transmission builds heat when a truck pulls a heavy trailer up a long grade in summer. A route like I-17 from the Valley floor toward Flagstaff is a real test. Elevated temperatures break down fluid and shorten clutch life. Read our Arizona heat guide for more.

Slipping or Flare Under Load

Engine RPM rising during a shift, or the truck feeling weak on a pull, can mean a clutch pack is slipping or a pressure control problem exists. Catching it early limits the damage.

Converter and Lockup Issues

Torque converter clutch problems can cause shudder, temperature spikes or an RPM rise at cruise. With this much torque, converter condition is critical.

Leaks and Connector Problems

Cooler line fittings, seals and electrical connectors can leak or fail, especially on trucks used in dusty job sites or off-road conditions.

How Sun West Diagnoses an AS69RC

We scan the engine and transmission modules, check software level, review codes, live data and adaptive values, verify fluid level with the correct procedure and road test the truck under realistic conditions when we can. We inspect the cooler, radiator and exhaust brake operation as well. Learn more about our diesel transmission repair services.

AS69RC Repair and Rebuild

1. Confirm the fault with testing, including software and electrical checks.
2. Repair external issues such as leaks, connectors or sensors when that is the cause.
3. For internal failures, remove the transmission and perform a complete teardown and inspection.
4. Replace clutches, steels, seals, gaskets, filters and worn hard parts.
5. Service the valve body and solenoids and address the torque converter.
6. Flush the cooler circuit, reinstall, fill, relearn and road test.

Qualifying rebuilds include our 3-year / 40,000-mile warranty with no deductible on covered repairs.

AS69RC Rebuild Cost

Cost depends on the failure, parts availability for this newer unit, the converter and any cooling work. We provide free estimates after diagnosis and explain everything before work starts. See our Ram 3500 transmission repair page and diesel rebuild cost guide. Financing is available.

Protecting Your Investment

A high-output diesel truck is a big investment. Follow the severe-service maintenance schedule if you tow, use the correct fluid, watch transmission temperature on long pulls and do not ignore warning messages. Our towing and your transmission article offers practical advice.

Aisin AS69RC Transmission FAQ

Is the AS69RC the same as the AS68RC?

No. The AS69RC is an updated version with internal changes to handle more torque, though it shares the same basic commercial-grade design.

Should I take my truck to the dealer if it is under warranty?

If a factory warranty covers the problem, that is usually the best first step. We are glad to help once coverage ends or for work outside it.

Can I keep towing with a warning light on?

No. A transmission warning while towing should be treated seriously. Stop safely, let it cool and have it diagnosed.