GM bulletin N222389360
What it saysCertain vehicles may have a 12mm diameter hole on the top surface of the front differential housing. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Sep 7, 2023, about the structure. It names 14 model years across Chevrolet and GMC (2016–2022). 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.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
Customer Satisfaction Program - Certain vehicles may have a 12mm diameter hole on the top surface of the front differential housing. Dealers will inspect for the hole and if present, rebuild the front axle with proper housing.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| N222389360 | Service bulletin | Sep 7, 2023 | 10242000 | PDF, 1,006 KB |
What the document itself lists
The manufacturer titles it “N222389360 - Customer Satisfaction Program”.
Parts the bulletin names — the first 40 it lists
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 19352759 | Oil-Gear | — | eBay Motors → |
| 19352760 | Obtain locally | — | eBay Motors → |
| 23474671 | Front Drive Axle Inner Shaft Retaining Ring | — | eBay Motors → |
| 11609826 | Front Wheel Drive Shaft Nut | — | eBay Motors → |
| 15522089 | Front Wheel Drive Shaft Washer | — | eBay Motors → |
| 84308104 | Transfer Case Front Output Shaft Boot Clamp | — | eBay Motors → |
| 11546720 | Front Axle Housing Bolt | — | eBay Motors → |
| 11547135 | Exhaust Manifold Bolt | — | eBay Motors → |
| 23471896 | Front Wheel Driver Intermediate Shaft Housing Gasket | — | eBay Motors → |
| 84156082 | Front Drive Axle Clutch Shaft | — | eBay Motors → |
| 23471871 | Front Drive Axle Clutch Fork | — | eBay Motors → |
| 23471876 | Front Drive Axle Clutch Fork Inner Spring | — | eBay Motors → |
| 85579602 | Front Drive Axle Inner Shaft | — | eBay Motors → |
| 23471875 | Front Drive Axle Clutch Sleeve | — | eBay Motors → |
| 84522876 | Front Drive Axle Clutch Gear | — | eBay Motors → |
| 23471872 | Front Drive Axle Inner Shaft Retaining Ring | — | eBay Motors → |
| 23495608 | Front Drive Axle Clutch Shaft Thrust Washer | — | eBay Motors → |
| 23495609 | Front Drive Axle Clutch Shaft Thrust Washer | — | eBay Motors → |
| 84572373 | Front Drive Axle Inner Shaft Bearing Assembly | — | eBay Motors → |
| 23348300 | Front Drive Axle Inner Shaft Seal Assembly | — | eBay Motors → |
| 23471881 | Front Drive Axle Inner Shaft Bearing Assembly | — | eBay Motors → |
| 23471889 | Front Differential Assembly | — | eBay Motors → |
| 23471958 | Front Differential Drive Pinion Gear Kit | — | eBay Motors → |
| 23471877 | Front Differential Bearing Assembly | — | eBay Motors → |
| 23471878 | Front Differential Bearing Assembly | — | eBay Motors → |
| 23471879 | Front Differential Drive Pinion Gear Inner Bearing Assembly | — | eBay Motors → |
| 23471880 | Front Differential Drive Pinion Gear Outer Bearing Assembly | — | eBay Motors → |
| 84053573 | Front Differential Drive Pinion Gear Seal | — | eBay Motors → |
| 85549947 | Front Differential Carrier Assembly | — | eBay Motors → |
| 89021297 | Thread locking Adhesive | — | eBay Motors → |
| 10953488 | obtain locally | — | eBay Motors → |
| 19257121 | Multi-Purpose Grease | — | eBay Motors → |
| 19257122 | obtain locally | — | eBay Motors → |
| 23471901 | SHIM KIT-FRT DIFF DRV P/GR BRG | — | eBay Motors → |
| 23471902 | SHIM KIT-FRT DIFF DRV P/GR BRG | — | eBay Motors → |
| 23471903 | SHIM KIT-FRT DIFF DRV P/GR BRG | — | eBay Motors → |
| 23471904 | SHIM KIT-FRT DIFF DRV P/GR BRG | — | eBay Motors → |
| 23471905 | SHIM KIT-FRT DIFF DRV P/GR BRG | — | eBay Motors → |
| 23471906 | SHIM KIT-FRT DIFF DRV P/GR BRG | — | eBay Motors → |
| 23471907 | — | — |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 9106822 | Customer Reimbursement Approved - For USA and Canada dealers only - For Export… | 0.2 hrs |
Read by machine from the document NHTSA serves (22 pages), read Sep 30, 2026. A part number is shown only where it matches GM’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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.
Model years it names
Source: as the manufacturer filed themChevrolet 7 model years
GMC 7 model years
A 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 14 model years this bulletin names have filed 1,950 complaints with NHTSA since 2015. 2 of them name Structure — 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.
Vehicle doors are uneven. Crooked. Headlights/taillights get foggy to the point where you cannot see the lights. Doors wont shut properly. Powertrain issues. Vibration after certain speeds. Transmission delays gear switching. Transmission kicking and banging. Exhaust has a hole in it.
2022 GMC Canyon · Structure · filed with NHTSA Feb 16, 2023 · ODI 11507604
Takata recalls hear water rush with a gurgle noise from dashboard this happens when taking off from a stop. Also when the vehicle is in drive with the foot on the brakes it makes loud noise then jumps. Also paint on hood has fisheyes the truck also idols high when starting up
2018 Chevrolet Colorado · Structure · filed with NHTSA Jan 31, 2019 · ODI 11173429
After the ignition was turned off, unable to remove the ignition key. Restarting the vehicle and rocking the gear shifter back and forth and rotating the steering wheel enables the key to be finally removed
2022 Chevrolet Colorado · Structure · filed with NHTSA Jul 12, 2025 · ODI 11673055
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 structure
Source: same model, same component group11 other manufacturer communications filed against these GM models under the same component group (structure), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-127 | Service bulletin | May 16, 2025 | This technical bulletin provides a procedure to correct the condition of Air Inlet Panel Extension Assembly May Become Disengaged After Hood… |
| 25-NA-057 | Service bulletin | Mar 11, 2025 | This technical bulletin provides a procedure to correct the condition of Front Wheel Opening Moldings Not Flush and/or Poor Fitment. |
| 23-NA-209 | Service bulletin | Feb 26, 2025 | This technical bulletin provides a procedure to Oil Can and/or Pop Noise from Roof Area During Car Wash. |
| 05-08-51-001L | Service bulletin | Feb 20, 2025 | This informational bulletin provides a procedure on how to remove the paint stain that may present itself under the shipping film. |
| 22-NA-244 | Warranty extension | Jan 30, 2025 | This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warr… |
| 12-08-51-002R | Service bulletin | Nov 7, 2024 | This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures. |
| 12-08-51-002Q | Service bulletin | Oct 7, 2024 | This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures. |
| 24-NA-109 | Service bulletin | Jun 20, 2024 | This technical bulletin provides a procedure to correct the condition of Rattle/Vibration Noise from Window Switch Area or Storage Area of F… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet and GMC, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM N222389360 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 N222389360 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 N222389360 cover?
The manufacturer filed it against 14 model years across 2 brands (Chevrolet and GMC): 2022 Chevrolet Colorado, 2021 Chevrolet Colorado, 2020 Chevrolet Colorado, 2019 Chevrolet Colorado, 2018 Chevrolet Colorado, 2017 Chevrolet Colorado and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.