Service bulletin 9004401

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

DIFFERENTIAL, Rear Axle (KL 4WD w/DK2 = 1-SPEED RDM) The Differential, Rear Axle (aka RDM) design, pump design, Driveline Control Module (aka DLCM) hardware & software and pressure sensor have all changed in the past few years. The changes are not interchangeable and each had a separate implementation date. Please comprehend it to avoid repeat repairs. There are 2 sections each with 3 sub-sections: 1) For 2014/5 VINs with DK2 = 1-spd RDM 2) For 2016 and later VINs with DK2 = 1-spd RDM 1) For 2014/5 VINs with DK2 = 1-spd RDM 2014 - 2015 VINs were built with a 1-speed RDM used a 24 plate clutch design. New service RDMs 68550586A$ use a 20-plate design. 1.1) If replacing the RDM · 24 plate and 20-plate design RDMs are NOT interchangeable unless the Drive Line Control Module (DLCM) is also replaced. · 68550586A$ service RDMs have a 20 clutch plate design · Not all 20-plate RDMs have the new pump design. The new pump requires a new DLCM. · All new service RDMs are shipped with the new pump design. · If a new 68550586AA service RDMs is installed, then replace the DLCM with new DLCM 68540647AA - 1-spd designed for the 20-plate RDM. 1.2) If replacing the DLCM but not the RDM or pump assembly, then · If the RDM is the original 24 plate design then use 68540645AA - 1-spd, 24 plate DLCM AND replace the pump with 68551790AA · If the RDM is the new 20 plate design then use 68540647AA - 1-spd, 20 plate DLCM AND also replace the pump with 68551790AA new pump unless the RDM previously had a 68551790AA installed. 1.3) If replacing the pump assembly, then use 68551790AA (new pump) AND also replace the DLCM with the version that matches the correct version of the RDM (24 or 20 plate). · Use 68540645AA for the 24 plate RDM with a new pump. · Use 68540647AA for the 20 plate RDM with a new pump. 2) For 2016 and later VINs with DK2 = 1-spd RDM Early 2016 were built with 68090612AG 24 plate RDMs. Use Section 1 ?For 2014/5 VINs with DK2 = 1-spd RDM? to resolve. The balance of M

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Driver assistance, Electrical system, Fuel system, Backup camera

Listing a model year does not mean every vehicle of it is concerned: the document says which.

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

• Bulletins for another vehicle
• Report an error on this page
• Report an error by email