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Service bulletin PI0837

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 id10118647
Published by NHTSA2017-10-12
Manufacturer's numberPI0837
Manufacturer's date2012-10-17
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This preliminary informational bulletin provides information on a Hesitation or "Sag" on Acceleration After Coast (Reprogram TCM and ECM).

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

Electrical system, Transmission and driveline, Automatic transmission, Software, Transmission control module

Vehicles listed
CHEVROLET IMPALA2012, 2013

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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