Please see T-SB-0092-20

2019-2020 Tacoma
(Please see this Post to determine VDS and WMI's)
Engine(s): 2GR
Transmission(s): 6AT

Some 2019 – 2020 model year Tacoma vehicles equipped with a 2GR-FKS engine and an AC60 transmission may exhibit one or more of the following conditions:
1) Lack of power
2) Delay/Hesitation
3) Frequent shift change

The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of these conditions occurring. Follow the Repair Procedure in this bulletin to address these conditions.

This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle’s in-service date. Warranty application is limited to occurrence of the specified condition described in this bulletin.

Repair Procedure
1. Confirm the condition exists. Does the vehicle exhibit a lack of power, delay/hesitation, and/or a frequent shift change?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual

2. Use Techstream to confirm if the ECM (PCM) calibration has been updated and check for the Authorized Modifications Label affixed to the vehicle in the location shown below. Is the calibration ID listed in Techstream and the label the latest ECM (PCM) calibration?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
NO — Continue to step 3.

3. Flash reprogram the ECM (PCM)

4. Prepare and install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:
ECM part number [Refer to the Parts Information section for the NEW PART NUMBER].
Calibration ID(s) [Refer to the Calibration Information section for the NEW CALIBRATION ID].
Dealer Code.
Repair Date.
Change Authority [This bulletin number].

B. Install the Authorized Modifications Label on the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.

5. Start the engine and warm it up to normal operating temperature.

6. Test-drive the vehicle to confirm proper operation.

Gilbert Silva

Dear Moderator, I own a 2020 Toyota Tacoma and have recently gotten the new T-SB 0090-20 installed on my truck via my local dealership. The truck worked awesome for a month, needless to say I was super happy. Unfortunately, that was short lived as my truck regressed to the default state prior to the TSB install. I took it back to the dealership, and they said that they can not do a reflash because there are no more updates available. Can you help me figure out what could have gone wrong? Might it be the gasoline octane grade I have been using? I use regular 87 octane. Also, is there anyway to remove the t-sb update and reinstall it with Toyota corporate approval? Please help me. I love the way the T-SB would hold the gears ⚙️ and provide much needed power. Thank you