# Service bulletin 20NA015

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: 10172284
- Published by NHTSA: 2020\-03\-09
- Manufacturer's number: 20NA015
- Manufacturer's date: 2020\-01\-23
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; ENGINE

## NHTSA's summary

This technical bulletin is providing a procedure to reprogram the ECM to correct a condition of Runs Rough Cold or Stall Condition Upon Cold Start and/or DTC U18A2 Set \(Mexico Only\) due to software concerns.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172284-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172284-9999.pdf)

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

## Components

Electrical system, Engine, Software

## Trouble codes named

U18A2

## Vehicles listed

- 2020 CHEVROLET EQUINOX
- 2020 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [PIP5632G](/bulletins/10230683.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIP4902Q](/bulletins/10230682.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIP5814](/bulletins/10230680.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates that there some service parts released to dealers missing software.
- [20NA171](/bulletins/10205543.md), 2021-12-27, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This service bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
- [16NA019](/bulletins/10186058.md), 2021-02-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
- [20NA171](/bulletins/10181701.md), 2020-10-26, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This technical bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
- [20NA171](/bulletins/10180323.md), 2020-09-28, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This technical bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
- [PIT5769](/bulletins/10179661.md), 2020-09-14, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates a concern on certain 2020 model year vehicles where the navigation estimated time of arrival is incorrect. The technician is to remove the sd card following the procedure to see if it is one of the affected part numbers.
- [PIC6417](/bulletins/10178365.md), 2020-08-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE. This Preliminary Information communication provides information to the technician about vehicles that may have a missing Forward Collision System Selection in the radio menu. Dealer should advise the customer General Motors is working on a solution to the concern.

JSON: [/v1/bulletins/10172284](/v1/bulletins/10172284)

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