Cadillac bulletin PIP5898B
What it saysThis Preliminary information communicates a potential root cause for a rear axle seal leak. NHTSA’s full summary ↓
Cadillac filed this with NHTSA as a service bulletin dated Mar 13, 2024, received Apr 15, 2024, about the power train. It names 8 model years (2016–2019). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary information communicates a potential root cause for a rear axle seal leak.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIP5898B | Service bulletin | Mar 13, 2024 | 10253081 | not found |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 8 model years this bulletin names have filed 165 complaints with NHTSA since 2015. 46 of them name Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
The vehicle has suffered a severe mechanical failure of the rear differential assembly, rendering it completely undrivable. This mechanical failure is a direct result of a known manufacturer defect documented in General Motors Technical Service Bulletin PIP5898/PIP5898B, regarding misoriented factory side bearing retaining snap rings…
2018 Cadillac ATS · Power Train · filed with NHTSA Oct 8, 2026 · ODI 11769806
Rear differential failure confirmed by the dealer at 41,000 miles. Told not to drive it as rear wheels could lock up causing accident. Rear was making load noise 2 days prior to failure with fluid leak upon inspection. Dealer states failure is under warranty but no parts available for 3-6 months
2018 Cadillac CTS · Power Train · filed with NHTSA Sep 26, 2022 · ODI 11486548
1. The transmission shudders at high speeds and at low speeds it either hesitates to shift gears or it lurches forward causing a rough shifting of gears. 2. I feel as though when I am braking and my car lurches forward, sometimes I have to brake even harder just to get the car to stop in time.
2017 Cadillac ATS · Power Train · filed with NHTSA May 29, 2025 · ODI 11663588
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group24 other manufacturer communications filed against these Cadillac models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Cadillac list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIP5966A | Service bulletin | Mar 2, 2025 | This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement |
| 16-NA-019 | Service bulletin | Feb 12, 2025 | This informational buleltin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flare… |
| 09-06-04-026Z | Service bulletin | Jan 9, 2025 | This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2. |
| 08-07-30-035I | Service bulletin | Nov 27, 2024 | This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid. |
| 04-06-01-029K | Service bulletin | Oct 28, 2024 | This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules. |
| PIP6014 | Service bulletin | Oct 10, 2024 | This Preliminary information communicates for Technicians installing a Service Replacement Transmission Assembly to contact Technical Assist… |
| 08-07-30-026I | Service bulletin | Sep 16, 2024 | This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up aft… |
| PIP5996A | Service bulletin | Sep 13, 2024 | This Preliminary information communicates diagnostic information for vehicles with transmission noise. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Cadillac PIP5898B a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the PIP5898B repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does PIP5898B cover?
The manufacturer filed it against 8 model years: 2019 Cadillac ATS, 2018 Cadillac ATS, 2017 Cadillac ATS, 2016 Cadillac ATS, 2019 Cadillac CTS, 2018 Cadillac CTS and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.