Service bulletin DCS6191

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

This communication is to inform specific dealers that have placed and received orders on Chevrolet Performance Parts lifter sets, p/n 88958689. The parts were shipped after 02/25/2022 and may include incorrect parts. This effects only sets with Julian dates between 22056 and 22121. Any set shipped prior to 22056 or after 22121 is not suspect. The Julian date code is located on the part number label just to the right of the part number (on the set box), then the supplier code (1937), then the Julian date code. See attached example picture with the Julian date noted. Action: Identify sets between the two Julian date codes. These suspect parts should be put on hold. Any sets outside that range may continue to be sold without concern. For sets sold over-the-counter, dealers must search their sales records for over-the-counter sales and provide them a copy of this communication. A follow up communication with additional direction will be provided as soon as possible.

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

Transmission and driveline

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

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