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Service bulletin 15NA040

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10137260
Published by NHTSA2018-05-21
Manufacturer's number15NA040
Manufacturer's date2018-01-04
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS; ENGINE

NHTSA's summary

This technical bulletin provides repair information for replacement of the drive belt tensioner to correct a customer concern for a rattle noise at 48 km/h (30 mph) to 64 km/h (40 mph) when the engine is switching between V4 and V8 and/or they notice fluid leaking from the bellow on top of the tensioner.

The document

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

Engine, Drive belts

Vehicles listed
CADILLAC CTS2016, 2017, 2018
CHEVROLET CAMARO2016, 2017, 2018
CHEVROLET CORVETTE2016, 2017, 2018

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

Other bulletins for the same vehicles and component
PIP5455C2018-08-20. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a rattle or flutter noise from the supercharger tensioner and belt. Dealer shouldReplace the supercharger belt with aGates Belt P/N K080852HD.
PIP5455A2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a rattle or flutter noise from the supercharger tensioner and belt. Dealer shouldReplace the supercharger belt with aGates Belt P/N K080852HD.
PIP54922017-08-15. Service bulletin. This Preliminary information communicatesCustomers may comment on a Scraping or Moan Noise heard during engine idle. Caused by theSupercharger Idler Pulley flipped 180 degrees on Idler. Advised to replace theReplace Idler Assembly – P/N 12668046 (#8)