Ram 1500, model years 2018 to 2019. Filed by Chrysler (FCA US LLC) and reported to NHTSA on 23 August 2018. 4,171 vehicles potentially affected.
What the notice says Chrysler (FCA US LLC) is recalling certain 2018-2019 RAM 1500 trucks. The rear differential may have been insufficiently filled, possibly resulting in its failure.
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Ram's own number for this recall: U88. That is the number on the owner letter and on the dealer paperwork. 18V556 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 18V556 cover?
- Ram 1500, model years 2018-2019.
- What is wrong with them?
- Chrysler (FCA US LLC) is recalling certain 2018-2019 RAM 1500 trucks. The rear differential may have been insufficiently filled, possibly resulting in its failure.
- What can happen if it is not put right?
- If the rear axle assembly fails, it can cause a loss of drive or the rear wheels may lock up. Either scenario increases the risk of a crash.
- Is there a fix yet?
- Yes, and it is free. Chrysler will notify owners, and dealers will inspect the rear axle oil level. Rear axles with an insufficient amount of oil will be replaced, free of charge. The recall began September 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Ram calls this recall U88, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “If the rear axle assembly fails, it can cause a loss of drive or the rear wheels may lock up. Either scenario increases the risk of a crash.”
affected
in the notice
caught
| Campaign | 18V556 |
|---|---|
| Filed by | Chrysler (FCA US LLC) |
| System at fault | Power Train:Axle Assembly |
| Reported to NHTSA | 23 August 2018 |
| Model years | 2018-2019 |
| Vehicles named | RAM 1500 |
What the notice says today
The consequence
If the rear axle assembly fails, it can cause a loss of drive or the rear wheels may lock up. Either scenario increases the risk of a crash.
The remedy
Chrysler will notify owners, and dealers will inspect the rear axle oil level. Rear axles with an insufficient amount of oil will be replaced, free of charge. The recall began September 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is U88.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 816 notices in the record whose component field names power train. Across that group the median wait before owners were written to was 42 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 18V556, wording as read on 16 September 2026. https://carsmultiverse.com/recall/18v556/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Ram notices we hold
- 26V561: 2025-2026 Chrysler Voyager, Chrysler Pacifica, and 2026 Chrysler Voyager Plug-In Hybrid Electric (PHEV)
- 26V560: 2025-2026 Ram 1500
- 26V529: 2026 Jeep Grand Cherokee and Grand Cherokee L
- 26V528: 2021-2023 Dodge Durango
- 26V510: 2023-2025 Dodge Hornet and 2023-2026 Alfa Romeo Tonale
- 26V495: 2019-2026 Ram 1500
- 26V456: 2026 Jeep Gladiator and Jeep Wrangler
- 26V421: 2026 Ram 1500
All 601 Ram campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 18V556 on 23 August 2026, they were:
- Defect summary
5be7b33a - Consequence
e75c8089 - Remedy
706134a4
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 18V556 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Ram 1500, in all seven, is kept on that vehicle's own page, with the newest in each.
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Owners of these cars
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