Service bulletin T-SB-0044-14

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)
Type	Service bulletin
NHTSA id	10132709
Published by NHTSA	2018-04-02
Manufacturer's number	T-SB-0044-14
Manufacturer's date	2014-07-07
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); VEHICLE SPEED CONTROL

NHTSA's summary

TSB: Some 2012 ? 2014 model year Tacoma vehicles equipped with 1GR-FE engines may exhibit spark knock (detonation) during light acceleration and/or uphill in hot weather (80°F or higher). The Engine Control module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring.

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

Throttle and cruise control, Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
TOYOTA TACOMA	2012, 2013, 2014

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
T-SB-0016-13	2018-04-23. Service bulletin. Some 4WD 2005 ? 2012 model year Tacoma vehicles equipped with an automatic transmission may exhibit a clunk/thunk noise from the rear of the vehicle or a ?bump-from-behind? sensation just before a stop or when accelerating from a stop. Improvements have been implemented on the rear propeller shaft (driveshaft) to reduce this condition. Follow the Repair Procedure in this bulletin to improve this condition.
T-SB-0057-13 Rev	2017-08-14. Service bulletin. TSB: Some 2005 - 2013 model year Tacoma vehicles equipped with a 5-speed automatic transmission may exhibit a whine noise from the rear differential between 50 - 60 mph (80 - 97 km/h). Use the following Repair Procedure to address this condition. NOTE-This bulletin does NOT apply to Limited Slip Differential (LSD) or locking type rear differentials.
T-SB-0057-13 Rev	2017-08-14. Service bulletin. TSB: Some 2005 - 2013 model year Tacoma vehicles equipped with a 5-speed automatic transmission may exhibit a whine noise from the rear differential between 50 - 60 mph (80 - 97 km/h). Use the following Repair Procedure to address this condition. NOTE-This bulletin does NOT apply to Limited Slip Differential (LSD) or locking type rear differentials.
T-SB-0016-13 Rev	2017-08-01. Service bulletin. TSB: Some 4WD 2005 - 2013 model year Tacoma vehicles equipped with an automatic transmission may exhibit a clunk/thunk noise from the rear of the vehicle or a "bump-from-behind" sensation just before a stop or when accelerating from a stop. Improvements have been implemented on the rear propeller shaft (driveshaft) to reduce this condition.
T-SB-0250-12 Rev	2017-08-01. Service bulletin. TSB: Some 2WD 2005 - 2013 model year Tacoma vehicles equipped with an automatic transmission may exhibit a clunk/thunk noise from the rear of the vehicle or a "bump-from-behind" sensation just before a stop or when accelerating from a stop. Improvements have been implemented on the rear propeller shaft (driveshaft). Follow the Repair Procedure in this bulletin to improve this condition.
T-SB-0200-08 Rev	2017-08-01. Service bulletin. TSB: The purpose of this bulletin is to assist in the identification and location of serial numbers on 2006 - 2014 model year automatic transmissions.
T-SB-0134-14	2017-08-01. Service bulletin. TSB: The purpose of this bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL "ON" shifting issues and/or transmission damage. Use the information in this bulletin when installing an automatic transmission/transaxle assembly.
T-SB-0260-08 Rev	2017-08-01. Service bulletin. TSB: The purpose of this bulletin is to assist in the identification and location of serial numbers on 2006 -2014 model year remanufactured automatic transmissions.
T-SB-0049-11 Rev	2017-08-01. Service bulletin. TSB: The purpose of this bulletin is to provide information regarding transmission and/or park neutral position switch installation. If the manual shift lever is rotated prior to installing the park neutral position switch, the detent spring may become detached from the manual shift lever.
T-SB-0014-11 Rev	2017-08-01. Service bulletin. TSB: The purpose of this service bulletin is to provide information regarding the installation of the correct torque converter bolts during automatic transmission/transaxle assembly replacement. Incorrect torque converter bolts or missing washers can cause damage to the torque converter assembly.