# Service bulletin 17NA390

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: 10137312
- Published by NHTSA: 2018\-05\-21
- Manufacturer's number: 17NA390
- Manufacturer's date: 2018\-02\-22
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

## NHTSA's summary

This technical bulletin provides a procedure to check the temp sensor connection and program the ECM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10137312-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10137312-0001.pdf)

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

## Components

Engine, Cooling system

## Vehicles listed

- 2018 BUICK ENCLAVE
- 2018 BUICK LACROSSE
- 2018 BUICK REGAL
- 2018 CADILLAC XT5
- 2018 CHEVROLET TRAVERSE
- 2018 GMC ACADIA

## 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.
- [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.
- [18046](/bulletins/10139291.md), 2018-06-04, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING. 18046 \- Service Update. On certain vehicles, the motor generator unit \(MGU\) coolant hose may contact the battery power inverter module \(BPIM\). Customers may experience a coolant leak. Dealers are to install a shorter bolt. They should also inspect the coolant hose for damage and replace it as necessary.
- [PIP5549](/bulletins/10129098.md), 2018-02-21, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. This Preliminary information communicates a diagnostic trail to a likely conclusion for lean codes on these vehicles.
- [PIT5606](/bulletins/10129059.md), 2018-02-21, Service bulletin: POWER TRAIN; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; VEHICLE SPEED CONTROL; STEERING; FUEL SYSTEM, GASOLINE. This Preliminary information communicates an Intermittent No Crank, No Start, or Reduced Power loss of data multiple U codes or Intermittent Power Door Locks inoperative. Inspect harness for chaffed by the I\-shaft at the base of the steering column. If chaffed, repair damaged wires and zip tie the harness away from the I\-shaft. Also Inspect the HVAC drain hose is properly routed and not plugged.

JSON: [/v1/bulletins/10137312](/v1/bulletins/10137312)

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