Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Big 3 accepts Allison transmission rebuild inquiries using the customer’s original unit. Send the full model and serial identification to scope a Duramax truck or another supported application.
Review rebuild requirements & installationIdentified Allison truck and equipment applications
Tell us what failed, what the vehicle does every day and what the diagnosis found. A transmission quote should cover the assembly and the supporting work needed to put the vehicle back in service.
Big 3 offers this family as a customer-core rebuild. Confirm acceptance, inspection arrangements and the written scope before shipping or drop-off. Price and turnaround depend on inspection, parts and the agreed work. A rebuildable unit and an approved job are required; an exchange deposit is not a substitute for supplying your transmission.
Quote my Allison rebuildAsk for assembly or rebuild cost, supplied components, installation, programming, supporting repairs and transport to be itemized. Do not assume a converter, cooler service, controls or tuning are included unless the quote says so.
Confirm product-specific warranty and the schedule before payment. Arrange delivery of your original unit after the job is accepted.
No. Supply the full transmission model and serial identification. Different families, generations, controls and applications need different scopes. Big 3 confirms whether your exact unit is accepted before you send it; this page is not an exchange-inventory listing.
Yes. Ask about installation at our East Texas shop and include the diagnosis, vehicle configuration and work requirements. Installation, supporting repairs and vehicle transport are separate unless included in the written quote. Visits and vehicle arrival must be scheduled.
Disclose tuning, engine changes, towing use and operating conditions before the quote. Do not assume a stock assembly or rebuild carries an increased torque rating or covers a modified application. Agree on the intended use and written warranty for the exact build.
Model name, trim and engine displacement are starting details. They do not establish transmission interchange. Send the VIN, model year, engine code, 2WD/4WD configuration and a photo of the original transmission identification label.
These guides cover selected families. If your transmission code is different or unknown, request identification help; the absence of a guide or catalog match does not mean the assembly cannot be supplied.
Allison covers multiple transmission families and applications. Send the unit’s model and serial identification, vehicle or equipment details, drivetrain and controls information. The name alone does not identify a rebuild specification; confirm acceptance and scope for your exact unit before sending it.
Confirm my application with Big 3Send the original transmission identification and diagnostic findings so Big 3 can confirm the rebuild scope, unit delivery and installation arrangements.
Send my VIN and transmission detailsInside the transmission
Follow our transmission work from the opened unit to the components on the bench. Bring us your vehicle details and symptoms so we can plan the right repair or replacement.
29 seconds inside the job
A stop-motion edit made from our shop’s sequential photographs. An opened transmission, component removal and a closer look inside.
An edited shop-work sequence, not an installation or repair tutorial.
Tell us what you drive and what you want to change.
Actual Big 3 shop projects shown. Photos illustrate different jobs and stages of work; included parts, fitment, finish and services are defined by your selected listing or written quote.
Engines • Transmissions • Installation
Built in East Texas. Shipped nationwide.
Engines • Transmissions • Installation
Big 3 accepts Allison transmission rebuild inquiries using the customer’s original unit. Send the full model and serial identification to scope a Duramax truck or another supported application.
Review rebuild requirements & installationIdentified Allison truck and equipment applications
Tell us what failed, what the vehicle does every day and what the diagnosis found. A transmission quote should cover the assembly and the supporting work needed to put the vehicle back in service.
Big 3 offers this family as a customer-core rebuild. Confirm acceptance, inspection arrangements and the written scope before shipping or drop-off. Price and turnaround depend on inspection, parts and the agreed work. A rebuildable unit and an approved job are required; an exchange deposit is not a substitute for supplying your transmission.
Quote my Allison rebuildAsk for assembly or rebuild cost, supplied components, installation, programming, supporting repairs and transport to be itemized. Do not assume a converter, cooler service, controls or tuning are included unless the quote says so.
Confirm product-specific warranty and the schedule before payment. Arrange delivery of your original unit after the job is accepted.
No. Supply the full transmission model and serial identification. Different families, generations, controls and applications need different scopes. Big 3 confirms whether your exact unit is accepted before you send it; this page is not an exchange-inventory listing.
Yes. Ask about installation at our East Texas shop and include the diagnosis, vehicle configuration and work requirements. Installation, supporting repairs and vehicle transport are separate unless included in the written quote. Visits and vehicle arrival must be scheduled.
Disclose tuning, engine changes, towing use and operating conditions before the quote. Do not assume a stock assembly or rebuild carries an increased torque rating or covers a modified application. Agree on the intended use and written warranty for the exact build.
Model name, trim and engine displacement are starting details. They do not establish transmission interchange. Send the VIN, model year, engine code, 2WD/4WD configuration and a photo of the original transmission identification label.
These guides cover selected families. If your transmission code is different or unknown, request identification help; the absence of a guide or catalog match does not mean the assembly cannot be supplied.
Allison covers multiple transmission families and applications. Send the unit’s model and serial identification, vehicle or equipment details, drivetrain and controls information. The name alone does not identify a rebuild specification; confirm acceptance and scope for your exact unit before sending it.
Confirm my application with Big 3Send the original transmission identification and diagnostic findings so Big 3 can confirm the rebuild scope, unit delivery and installation arrangements.
Send my VIN and transmission detailsInside the transmission
Follow our transmission work from the opened unit to the components on the bench. Bring us your vehicle details and symptoms so we can plan the right repair or replacement.
29 seconds inside the job
A stop-motion edit made from our shop’s sequential photographs. An opened transmission, component removal and a closer look inside.
An edited shop-work sequence, not an installation or repair tutorial.
Tell us what you drive and what you want to change.
Actual Big 3 shop projects shown. Photos illustrate different jobs and stages of work; included parts, fitment, finish and services are defined by your selected listing or written quote.
