20759777 | 2011 GMC Sierra 6.6L TCM Transmission Control Module Plug&Play | 25978353
This Transmission Computer also referred to as a Transmission Control Module (TCM) or Transmission Control Unit (TCU) is a guaranteed replacement for all 2011 GMC Sierra TCM models with a 6.6L engine size and matching part number 20759777. This module belongs to the hardware code 25978353.
Our 2011 GMC Sierra transmission computers will come fully plug&play and flashed to the most recent manufacturer updates. Our experienced staff of in-house mechanics utilize off-board testing to ensure each and every unit passes stringent quality control tests to ensure that they are working at peak performance. No additional programming will be required upon installation
One of the primary functions of the TCM is to monitor the vehicle’s speed and acceleration so that it can manage how the transmission shifts gears. In order to do this, the TCM will analyze information it receives from the vehicle’s various sensors and adjust the mechanics of the transmission accordingly so that it can run as efficiently as possible. A well-functioning TCM will maximize the drivability of your vehicle, optimize the transmission’s shift schedules to perform at its most efficient level, enhance fuel economy, and make your transmission feel like it’s new from the factory.
NOTE: We will need your Vehicle Identification Number (VIN) in order to program the unit.
During the checkout process, please enter it in the text field labeled "Vehicle Identification Number (VIN)" located in the Vehicle Information section.
*Don't have your VIN number on hand? Not a problem, you can send it to us later by e-mail [email protected] or by phone 516-766-2223 (EXT 2)
REFURBISHED AND QUALITY CONTROL TESTING:
Each unit is prepared, individually inspected, fully refurbished, and quality control tested by our certified in-house mechanics. All testing and refurbishing is done entirely in house so no unit leaves our facility without proper inspection. This allows us to provide units that are superior in quality at an unbeatable price! All units are tested to ensure they address all common GMC Sierra transmission issues including:
- Trouble Shifting Gears
- Fault/Trouble Codes
- Limp Mode
- Engine Noise
- Enging Stalling
- Poor Fuel Economy
Why Purchase From Us:
- Industries Lowest Prices
- FREE Lifetime Warranty
- FREE Domestic Shipping with Quick Turnaround Time
- No Core Charge or Core Return Required; you can keep your old unit
- Guaranteed OEM products; Refurbished and 100% Tested
- Latest Software Updates Included
- Plug & Play; No Additional Programming Required
- ASE Certified In-House Technicians
- Readily Available Support Agents (email, phone, live chat)
- Google Verified Merchant, 1500+ 5-Star Reviews ★ ★ ★ ★ ★
|Additional Model Info||2500; 3500; 2500 Denali; 3500 Denali|
|Engine Type||Diesel, Turbo|
|EPC Part Number||25978353|
|GM Part Number||20759777|
|GM Service Number||25978353|
|GM Other Part Number||4900BSM0014|
Shipping & Cancellation
|Shipping Destination||Flat Rates||Duration of Shipping|
|Africa, Central & South America||$450.00 USD||2-8 Business Days|
|Asia, Australia & Europe||$300.00 USD||2-8 Business Days|
|Canada||$105.00 USD||2-8 Business Days|
|Caribbean||$225.00 USD||2-8 Business Days|
|Mexico||$300.00 USD||2-8 Business Days|
|USA||Free Shipping||2-7 Business Days|
- All items have a 1-3 full business day (Mon. - Fri. excluding holidays) handling time after the order is fully processed for refurbishing/programming unless otherwise expressly stated.
- Upon completion of refurbishing/programming, your item will be shipped using USPS Priority Mail unless an upgraded method of shipment is purchased.
- All units which finalize refurbishing/programming BEFORE 3:00 p.m. EST, will be shipped that same day.
- All units which finalize refurbishing/programming AFTER 3:00 p.m. EST, will be shipped the following business day.
- Shipping times within the country vary but are generally between 1-3 shipping days (Mon. - Sat. excluding holidays). Customers will be notified of any delay via email.
All items come with a lifetime warranty. Warranty does not include any labor associated with installation and/or removal of parts, key and/or Locksmith fees. Buyer will not be reimbursed for any such fees--NO EXCEPTIONS. Buyer hereby acknowledges and agrees that the Seller's liability is limited to the price of the item sold and Seller is not liable for any damage and/or injury sustained that results from any item(s) sold by any entity operated by Flagship One, Inc and Buyer hereby now and forever relinquishes Seller from any such liability. Returns must be in original condition and be accompanied by a Return Merchandise Authorization (RMA) otherwise the return will be deemed unauthorized. Unauthorized returns will not be processed and will be held for no more than 45 days after receipt. After 45 days, if an unauthorized return is not claimed or accompanied by an RMA, Seller reserves the right to maintain possession of the unclaimed/unauthorized return. Electrical parts are tested prior to purchase and if returned, all units will be inspected for burnt components, physical damage and water damage. Returns will be processed in the order received and may have a greater handling time than order processing. The lifetime warranty shall be void if an item is returned with any signs of: (a)burnt components; (b)physical and/or water damage; (c)misuse, abuse, modifications, opened, tampered with, and/or used for any purpose not originally intended; (d)vehicle is involved in a collision; or (e)security seal is removed, broken and/or damaged. Buyer must activate warranty within 20 days of receipt to be valid. Returns are subject to a 20% restocking fee. Returned programmed items are subject to an additional $85 non-refundable programming fee and, if Buyer purchased keys, the return is subject to an additional $90 non-refundable key fee.
All returns for money back must be received by Seller within 30 days from the date of original purchase—NO EXCEPTIONS. Returns received after 30 days from the date of original purchase include an option for an exchange or in-store credit. Unless otherwise expressly provided, in-store credit is subject to the return fees when the unit is free of defect which shall be determined solely by Seller. Seller expressly reserves the right to require a Buyer to return an alleged faulty/defective unit to Seller at the Buyer's expense for testing prior to replacement. NO replacement shall be issued until receipt of return. All items are OEM/Refurbished and Seller will NOT reimburse any fees a Buyer expends in connection with a possible faulty/defective unit(s) including, but not limited to Locksmith fees, diagnostic fees, rental car fees, storage fees, dealership fees, third party reprogramming fees, etc. This transaction shall be deemed to have been made in the State of New York and the validity, interpretation and performance shall be governed by NY. Exclusive jurisdiction and venue over any disputes arising out of or in connection with this transaction shall be brought in Nassau County, NY. After one claim, the warranty is exhausted. Buyer hereby understands, acknowledges, agrees and accepts all of the terms set forth herein upon purchase and that the terms set forth herein shall be controlling.
The vehicle identification number (VIN) refers to a unique code that is given to each automobile. The VIN acts as the vehicle's fingerprint, as no two vehicles have the same number. A VIN is composed of 17 characters (digits and capital letters) that act as a unique identifier for the vehicle. Each character is used to reference the vehicle's unique features, specifications and manufacturer. VIN numbers can be used to track recalls, registrations, warranty claims, thefts and insurance coverage. In our case, the VIN is used to identify the correct module for a particular vehicle.
Plug & Play or Plug ‘N Drive refers to all control modules that don’t require additional programming. Most units before 1996 (OBD I) are referred to as plug-n-play. All of our Chrysler, Dodge, Plymouth & Jeep units are sold as Plug & Play.
This term refers to the programming process our mechanics perform on all specified control modules. During this process the vehicles replacement engine control module is VIN Programmed and flashed with the most recent manufacturer updates. These updates can help improve the performance and fuel economy of the vehicle.
Flagship One offers free shipping throughout the USA. There is a 1-3 day handling time after an order is place. We use USPS Priority shipping to deliver all of our modules. This usually takes 1-3 business days on average and most of our modules are delivered to the customer in less then 5 business days. In some cases we can expedite the shipping and will inform you if that is a possibility.
You can find the VIN (17 digit identification number) engraved at the bottom corner of the drivers side windshield or inside the drivers door. It can also be found on the title, registration or insurance card of the vehicle.
The Engine Computer (ECM) will adapt to your own driving patterns and it can also monitor and regulate all the essential functions in a vehicle as conditions change. The engine computer is also responsible for making sure that all the modules are communicating smoothly and seamlessly.
The engine control module is easy to replace and relatively simple for you to do it on your own. Nevertheless an ECM can be costly, so you need to make sure you have the right part number plus the required software updates to ensure a smooth transition.
The engine control module is prone to both external and internal threats that can cause it to not work as expected. Below is a list of the most common ones:
- Constant engine vibrations
- An unexpected short circuit
- Excessive Temperature
- Natural Threats such as corrosion
- Irregular voltage
Since the engine computer controls a lot of the major functions in a car it can be hard to pinpoint exactly what is causing your engine control module to malfunction but there are some common signs that can help you diagnose a faulty powertrain control module such as:
- Engine stalling and misfiring
- Loss of ignition pulse
- Check engine warning light
- Loss of acceleration
- Car failing to start