Loading...

Eaton/Fuller Transmission Control Module (TCM) 2008-2020: OEM 691961

EATON/FULLER TRANSMISSION CONTROL MODULE (TCM) 2008-2020: OEM 691961

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,595.00

CORE CHARGE:

$500.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER 691961
PART TYPE Transmission Control Module (TCM)
BRAND Tamerx Diesel Products
ENGINE MAKE Eaton/Fuller
ENGINE TYPE
YEAR 2008-2020
PART NUMBER 691961RM
APPLICATION NOTES ETC2004A02

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Transmission Control Module (TCM), Tamerx part number 691961RM ( OEM Part Number 691961 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Eaton/Fuller , production years 2008-2020, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM691961
Additional OEM691961, ETC2004A04

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode
WEIGHT2.00 LBS

SHIPPING OPTIONS

Ship Weight : 2.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


Revive seamless shifting in your Eaton/Fuller-equipped rig with the remanufactured Tamerx Transmission Control Module (TCM) – OEM 691961! Expertly rebuilt in the U.S.A. to meet—and often improve upon—OEM standards, this module delivers dependable reliability for models from 2008 to 2020, backed by a solid 1 million-mile or 1-year replacement warranty. Get back on the road with confidence, thanks to quality craftsmanship you can trust.

FITMENT CHART

YEARMAKEENGINE(S)
2008Eaton/Fuller
2009Eaton/Fuller
2010Eaton/Fuller
2011Eaton/Fuller
2012Eaton/Fuller
2013Eaton/Fuller
2014Eaton/Fuller
2015Eaton/Fuller
2016Eaton/Fuller
2017Eaton/Fuller
2018Eaton/Fuller
2019Eaton/Fuller
2020Eaton/Fuller

PEOPLE ALSO ASKS | BLOG(S)

When your heavy-duty vehicle demands precision in gear shifting, the Eaton/Fuller Transmission Control Module (TCM), OEM 691961, is the vital component you need for seamless and dependable performance. Remanufactured by Tamerx Diesel Products to the highest OEM standards—and often improved during the process—this module ensures lasting reliability for Eaton/Fuller transmissions from 2008 to 2020.

Here’s what makes the Eaton/Fuller TCM OEM 691961 stand out, and why it should be top of mind for anyone looking to maintain or upgrade their transmission control:

  • Direct OEM Fitment & Compatibility
    Designed specifically for Eaton/Fuller transmissions produced between 2008 and 2020, OEM 691961 ensures perfect integration and minimal downtime.

  • Superior Remanufacturing Quality
    Each unit undergoes meticulous reman process in the U.S., meeting stringent OEM standards. Tamerx often applies enhancements to improve durability and performance.

  • Comprehensive Warranty Protection
    With a 1 million‑mile or 1‑year warranty, you’re covered for the long haul—confidence that your TCM will perform reliably on demanding hauls.

  • Optimized Transmission Control
    Acting as the electronic “brain” of your gearbox, the TCM receives data from engine ECU, vehicle speed sensors, and more, enabling smooth and accurate gear changes.

  • Plug-and-Play Replacement
    Swapping in the Tamerx OE‑691961RM unit is straightforward, reducing job time and hassle—just match the part number and install.

  • Fast Shipping & Fair Core Charges
    Tamerx offers ground, 2‑day, and next‑day shipping (when needed), plus a core charge hold that’s refunded once your old module is returned within 30 days.

  • Built for Heavy-Duty Toughness
    Engineered to withstand extreme vibration, temperature variation, and road stress—this TCM helps keep your transmission in sync under harsh operating conditions.

For truck owners and fleet managers dedicated to reliability and performance, the Eaton/Fuller TCM OEM 691961 from Tamerx Diesel Products offers everything you need: OEM precision, rugged durability, and peace of mind thanks to an impressive warranty. Whether you’re handling long hauls or navigating tight schedules, this TCM ensures your gear shifts stay smooth, your transmission stays responsive, and your operation stays on track.

The Transmission Control Module (TCM) plays a vital role in managing automatic gear shifts in modern vehicles. When the TCM experiences problems, it often triggers Diagnostic Trouble Codes (DTCs) that can be retrieved with a scan tool. These codes help identify the specific nature of the problem, making diagnostics and repairs more efficient. Recognizing common TCM-related DTCs can help you spot issues early and avoid severe transmission damage.

Common TCM-Related DTCs

  • P0700 – Transmission Control System Malfunction
    This is a general code indicating the TCM has detected a fault. It’s usually accompanied by other, more specific transmission-related codes.

  • P0715 – Input/Turbine Speed Sensor Circuit Malfunction
    Signals a problem with the sensor that monitors the transmission’s input speed. The TCM relies on this data to determine gear shifts.

  • P0720 – Output Speed Sensor Circuit Malfunction
    Indicates an issue with the sensor monitoring the output shaft speed, which affects gear engagement and torque converter lockup.

  • P0730 – Incorrect Gear Ratio
    Triggered when the TCM detects a gear ratio that doesn’t match the expected value, often due to transmission slipping or solenoid problems.

  • P0750 to P0770 – Shift Solenoid Malfunctions
    These codes identify which shift solenoids may be failing, impacting gear engagement or causing erratic shifting.

  • U0101 – Lost Communication with TCM
    This network-related code signals a communication breakdown between the TCM and other modules, such as the Engine Control Module (ECM).

  • P0613 – TCM Processor Fault
    Points to a potential internal failure in the TCM’s circuitry, requiring reprogramming or replacement.

  • P0882 – TCM Power Input Signal Low
    Indicates low voltage at the TCM’s power input, possibly caused by wiring issues or battery problems.

Understanding these common TCM-related DTCs allows for faster troubleshooting and more accurate repairs. If your vehicle displays erratic shifting, limp mode activation, or warning lights, a scan tool reading can provide critical insights. Addressing TCM issues early helps preserve your transmission system, ensures smoother driving, and avoids expensive repairs down the line.

 

When properly installed and maintained, it typically lasts millions of miles within its covered range.

Signs may include erratic or rough shifts, loss of communication between modules, or fault code generation.

Failure can lead to transmission lockup, spurious fault codes, poor performance, or even vehicle disablement.

By using a diagnostic scanner to check for fault codes, monitoring shift logic output, and verifying proper communication on the network.

PRODUCT VIDEOS