WenmarOpen by Wenmar Pro

Service bulletin TSA-20-01 R02

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 id10185178
Published by NHTSA2021-01-06
Manufacturer's numberTSA-20-01 R02
Manufacturer's date2020-12-18
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM

NHTSA's summary

Slingshot has released updated Engine Control Module (ECM) and Transmission Control Module (TCM) calibrations to provide smoother transmission shifts, improved vehicle behavior when coming to a stop, and improved low speed drivability.

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, Engine, Transmission and driveline, Automatic transmission, Engine control module, Transmission control module

Vehicles listed
POLARIS SLINGSHOT GT2020
POLARIS SLINGSHOT R2020
POLARIS SLINGSHOT SL2020

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