WenmarOpen by Wenmar Pro

Service bulletin 20NA047

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 id10172817
Published by NHTSA2020-03-30
Manufacturer's number20NA047
Manufacturer's date2020-02-28
NHTSA componentEQUIPMENT

NHTSA's summary

This technical bulletin provides a service procedure to correct conditions of Front or Rear Crankshaft Oil Leak, MIL Illuminated with DTC P1101 Set.

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

Equipment and accessories

Trouble codes named

P1101

Vehicles listed
BUICK ENCORE2016, 2017, 2018, 2019
CHEVROLET CRUZE2016, 2017, 2018, 2019
CHEVROLET EQUINOX2018, 2019, 2020
CHEVROLET MALIBU2016, 2017, 2018, 2019, 2020
CHEVROLET TRAX2019
CHEVROLET VOLT2016, 2017, 2018, 2019
GMC TERRAIN2018, 2019, 2020

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
23-NA-0642024-05-02. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
20-NA-1322024-04-23. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
17-NA-0522024-04-23. Service bulletin. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
PIC6486E2024-04-15. Service bulletin. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.
PIT5992A2024-04-15. Service bulletin. This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
PIT5401E2024-04-01. Service bulletin. Radio Inoperative with No Communication and DTC U0184
23-NA-1032024-03-29. Service bulletin. This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
24-NA-0542024-03-20. Service bulletin. This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start.
11-00-89-005X2024-03-19. Service bulletin. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).