# Service bulletin 15811

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.

- Type: Service bulletin
- NHTSA id: 10090382
- Published by NHTSA: 2017\-02\-03
- Manufacturer's number: 15811
- Manufacturer's date: 2016\-03\-22
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

## NHTSA's summary

15811 \- SERVICE UPDATE. SOME VEHICLES EQUIPPED WITH A 1.6L ENGINE \(RPO LWC\) MAY HAVE A CHAFING CONDITION OF THE CHARGE AIR COOLER OUTLET AIR HOSE ON THE UPPER VACUUM PUMP STUD. DEALERS ARE TO REPLACE THE UPPER VACUUM PUMP STUD WITH A FASTENING BOLT .

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Cooling system

## Vehicles listed

- 2016 BUICK CASCADA

## Other bulletins for the same vehicles and component

- [PIP5684B](/bulletins/10178370.md), 2020-08-10, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This Preliminary information communicates the use of air leak diagnostic test tool CH\-52250 in addition to the information found in the service manual.
- [19NA104](/bulletins/10163237.md), 2019-07-29, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.

JSON: [/v1/bulletins/10090382](/v1/bulletins/10090382)

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