# Service bulletin PIP5549

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: 10129098
- Published by NHTSA: 2018\-02\-21
- Manufacturer's number: PIP5549
- Manufacturer's date: 2018\-01\-25
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

## NHTSA's summary

This Preliminary information communicates a diagnostic trail to a likely conclusion for lean codes on these vehicles.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10129098-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10129098-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Cooling system

## Vehicles listed

- 2012 to 2018 BUICK ENCLAVE
- 2015 to 2018 CADILLAC XTS
- 2015 to 2016 CHEVROLET COLORADO
- 2015 to 2017 CHEVROLET EQUINOX
- 2015 to 2018 CHEVROLET IMPALA
- 2012 to 2018 CHEVROLET TRAVERSE
- 2012 to 2017 GMC ACADIA
- 2015 to 2016 GMC CANYON
- 2015 to 2017 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [14588C](/bulletins/10247220.md), 2023-12-18, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. Engine Cooling Fan Motor
- [19NA007](/bulletins/10183165.md), 2020-11-30, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; EQUIPMENT. This technical bulletin provides a procedure to replace the surge tank if found the cause of the customers concern.
- [18NA103](/bulletins/10183153.md), 2020-11-30, Service bulletin: FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP. This service bulletin provides information to correct a customer concern of an in\-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp \(MIL\) is illuminated.
- [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.
- [19NA007](/bulletins/10163210.md), 2019-07-29, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. This technical bulletin provides a procedure to replace the surge tank if found the cause of the customers concern.
- [PIP5257B](/bulletins/10143762.md), 2018-08-20, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses.
- [PIE0385B](/bulletins/10138095.md), 2018-05-21, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. This engineering information bulletin ends the need for information from the field on vehicles that have the concern of a noisy water pump.
- [15\-NA\-053](/bulletins/10137949.md), 2018-05-21, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. This technical bulletin provides a procedure for installing fan guards on both driver and passenger seat cooling fans due to the ventilation fans coming into contact with the seat cushion pad causing a noise when in use.
- [18460](/bulletins/10137759.md), 2018-05-21, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM. 18460 ? Service Update Bulletin. If the radiator support fasteners loosen, these vehicles may experience additional noise, poor retention of the front air shutter assembly and a potential loss of durability life in certain areas of the radiator support structure. Dealers are to add medium duty threadlocker to the radiator support fasteners

JSON: [/v1/bulletins/10129098](/v1/bulletins/10129098)

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