Last updated: July 2026

By Alex Smith, ShopEarl

The 48RE transmission is the four-speed automatic Chrysler bolted behind the 5.9L Cummins in 2003–2007 Ram 2500 and 3500 trucks. Most failures trace to the governor pressure solenoid and transducer, the torque converter, or worn bands. Used 48RE transmissions on ShopEarl start near $579; a full shop replacement can pass $6,000.

What is the 48RE transmission, and which trucks used it?

The 48RE is Chrysler’s heavy-duty four-speed automatic, an evolution of the 47RE that arrived in 2003 and ran through the 2007 model year. It sat behind the common-rail 5.9L Cummins in Ram 2500 and 3500 pickups (and one year of the 8.0L V10), and it was retired when the 6.7L Cummins arrived with the 68RFE six-speed.

Specs per Diesel Hub’s 48RE reference.

That torque number explains a lot of what owners run into. By 2005 the 5.9L Cummins was rated at 610 lb-ft — more than the transmission’s 560–570 lb-ft input rating — so Chrysler had the engine detune itself under load to protect the gearbox. Add a tuner, delete the detune, or tow heavy in overdrive, and the 48RE transmission is the part that gives first.

What are the most common 48RE transmission problems?

1. Governor pressure solenoid and transducer failure. The single most common 48RE complaint. Both parts live in the valve body and use plastic housings that crack, and when governor pressure goes erratic you get late, harsh, or early shifts — often followed by limp mode.
2. Torque converter and lockup clutch failure. A shudder at highway speed, or a converter that never locks, points here. Converter debris then circulates and takes out solenoids, which is why “I replaced the solenoid and it failed again” is such a common story.
3. Overdrive unit and OD solenoid burnout. No 4th gear, or an overdrive light that flashes, usually means the OD section or its solenoid — frequently caused by line pressure that was wrong in the first place.
4. Worn bands from skipped service. The 48RE needs its bands adjusted at every 30,000-mile fluid and filter change. Skip that and you get slipping in reverse and second, which grinds down the clutch packs.
5. Overheating while towing. Above roughly 260°F the PCM locks the converter and forces a 4–3 downshift to shed heat, and it won’t allow fourth again until fluid drops back near 230°F. Repeated heat cycles are what kill an otherwise healthy unit.
6. Valve body and wiring harness faults. A failing internal harness can destroy transducers repeatedly — worth checking before you condemn the whole transmission.

How do you confirm it’s the 48RE transmission and not something cheaper?

Pull codes first. The ones that matter on this platform are P0748 (governor pressure solenoid control circuit), P1763 (governor pressure sensor volts too high) and P1764 (volts too low) — all documented on engine-codes.com. A P0748 on its own points at the solenoid pack, its wiring, or the relay, not automatically at a failed transmission.

Then work from cheapest to most expensive:

• Check the fluid. Burnt smell and dark ATF+4 mean heat damage. Clean, red, correct-level fluid with a slipping truck points at pressure control, not the whole unit.
• Adjust the bands if they’re overdue. It’s a service item, not a repair, and it fixes some slipping complaints outright.
• Replace the governor pressure solenoid and transducer as a pair. Parts are inexpensive relative to a rebuild, and this is the fix on a large share of shift-quality complaints.
• Test converter lockup on a level road at steady throttle. A converter that won’t lock, or shudders when it does, is its own repair — and worth catching before you buy a replacement transmission that ships without one.
• Escalate to replacement when you find metal in the pan, no reverse, or slipping that survives correct fluid, correct pressure, and adjusted bands.

How much does a 48RE transmission cost in 2026?

Prices verified July 2026 on ShopEarl, Powertrain Products and RepairPal. Confirm current pricing with each seller.

The spread is the whole story. RepairPal’s estimator puts parts for a transmission replacement around $4,888 with labor between $1,116 and $1,637 — so the shop-supplied route lands north of $6,000. Sourcing the unit yourself and paying a shop only for the install is where the money is.

Should you rebuild, replace, or buy a used 48RE?

Rebuild makes sense when the case and hard parts are good and you want upgrades — a billet servo, a heavier converter, a better valve body — for a truck you plan to keep and tow with. You’re paying for labor and parts, and the result is only as good as the builder.

Buy remanufactured when you want the longest warranty and don’t want to think about it again. Specialists back these hard: JASPER covers remanufactured transmissions for 3 years/100,000 miles parts and labor, and Street Smart Transmission advertises a 3-year, unlimited-mile, parts-and-labor nationwide warranty with free shipping and no up-front core charge.

Buy used when the donor data is good and you want the lowest cost per mile. A low-mileage 48RE transmission out of a wrecked truck is mechanically the same part that left the factory, and on a 2003–2007 chassis it’s often the difference between fixing the truck and parking it. This is where a marketplace beats a single yard: you can compare donor mileage and price across sellers instead of taking whatever one yard has on the shelf.

Used vs. remanufactured 48RE: which should you buy?

Reman specialists lead on warranty length — that’s real, and worth paying for if the truck works hard. Used leads on price and availability, and with donor mileage published on the listing you’re not buying blind.

What to check before you buy a used 48RE transmission

1. Match the exact configuration. 2003–2004 and 2005–2007 units differ, and 2WD and 4WD housings are not interchangeable. Confirm year range and drivetrain against your VIN.
2. Read the donor mileage. A 150,000-mile unit and a 320,000-mile unit are different purchases at the same price.
3. Budget for a torque converter. A transmission assembly is the gear-changing unit — it does not include the torque converter, flexplate, mount, shift linkage, or cooler lines. Reusing a converter off a failed transmission is how a good used unit gets ruined.
4. Read the warranty terms. Parts-only versus parts-and-labor is the difference that matters, and extended coverage is usually cheapest at checkout.
5. Buy from live inventory. Aggregator listings often run on a once-a-day feed, so the unit you call about can already be gone. Real-time availability means the part is actually there at that price.

Frequently asked questions

How much does a 48RE transmission cost?

A used OEM 48RE lists from about $579 to $3,275 on ShopEarl as of July 2026, and remanufactured units run roughly $2,910 to $4,338 — Powertrain Products lists its 48RE at $3,399. Add shop labor, which RepairPal estimates at $1,116 to $1,637 for a transmission replacement.

What is the most common 48RE problem?

Governor pressure solenoid and transducer failure. Both sit in the valve body, both use plastic housings that crack, and the result is erratic shift timing or limp mode. They’re a fraction of the cost of a transmission, so test them before you replace the unit.

How long does a 48RE transmission last?

A stock, regularly serviced 48RE commonly runs past 200,000 miles. Towing heavy in overdrive, running the fluid hot, skipping the 30,000-mile fluid, filter and band service, or adding power beyond the 560–570 lb-ft input rating all shorten that considerably.

Is it safe to buy a used 48RE transmission online?

Yes, if you buy on data rather than a photo. Check the published donor mileage, confirm the year range and 2WD/4WD fitment against your VIN, and confirm the warranty terms before checkout. Every order on ShopEarl carries a 30-day minimum warranty, with extended and lifetime coverage available from many sellers.

Does a used 48RE come with a torque converter?

Usually not. A transmission assembly is the gear-changing unit only — no torque converter, flexplate, mount, shift linkage, or cooler lines. Plan on a new or remanufactured converter, especially if the old one failed, because converter debris is a common cause of repeat failures.

Sources: Diesel Hub — Chrysler 48RE specs; RepairPal — transmission replacement cost estimator; Powertrain Products — remanufactured 48RE; Street Smart Transmission — remanufactured 48RE warranty; JASPER Engines & Transmissions; engine-codes.com — P0748 Dodge. ShopEarl pricing verified July 19, 2026.

Related reading: Transmission replacement cost: new vs. used vs. reman · 68RFE transmission problems and cost · 4L80E transmission problems and cost · Best places to buy a used transmission · Browse all Transmission & Drivetrain parts

Alex Smith runs ShopEarl, a US marketplace for used, remanufactured and new aftermarket auto parts sourced from vetted salvage yards across the country.