Allison DOC 2021.5 – Diagnostic Software for Allison Transmissions

Allison DOC v2021.5 is the official diagnostic and troubleshooting software used by professionals to service Allison automatic transmissions. It allows technicians to perform advanced diagnostics, run system tests, read fault codes, and access live data directly from the transmission control module (TCM).

Powerful Transmission Diagnostics for Heavy-Duty Applications

This version of Allison DOC™ (Diagnostic Optimized Connection) 2021.5 offers enhanced compatibility and improved performance for diagnosing and servicing Allison 1000–9000 Series transmissions. Whether you’re maintaining commercial trucks, buses, or off-highway equipment, this tool helps reduce downtime and improve maintenance precision.

Key Features

• Official Allison Diagnostic Tool: Developed and endorsed by Allison Transmission engineers.
• Full TCM Communication: Read and clear diagnostic trouble codes (DTCs), monitor live parameters, and record data logs.
• Bi-Directional Testing: Perform solenoid tests, clutch tests, and other functional procedures.
• Enhanced Reporting: Generate and print detailed reports for maintenance tracking and compliance.
• Multiple Display Modes: View real-time data in digital, analog, or graph formats.
• Fleet Management Ready: Ideal for service centers and commercial fleet diagnostics.
• RP1210A/B/C Compliant: Works with NEXIQ USB Link 2, DPA5, and other industry adapters.

Compatible With

Allison DOC 2021.5 supports diagnostic functions for:

• Allison 1000 / 2000 Series Transmissions
• Allison 3000 / 4000 Series
• Allison 5000 / 6000 / 8000 / 9000 Series (Off-Highway)
• H 40/50 EP Hybrid Transmissions

Note: For use on heavy-duty trucks, buses, and off-highway equipment equipped with Allison transmissions. Requires RP1210-compliant adapter.

System Requirements

• Operating System: Windows 10 or 11 (64-bit only)
• CPU: Intel Core i3 or higher (i5 recommended)
• RAM: Minimum 4GB (8GB or higher preferred)
• Hard Drive: At least 2GB free space
• Adapter: RP1210A/B/C compatible (e.g., NEXIQ USB-Link 2, DPA5)

Package Includes

• Full version of Allison DOC v2021.5 (digital download)
• Step-by-step installation guide (PDF/video)
• Lifetime activation – no subscription required
• Support via email or remote session if needed

Trusted Tool for Transmission Diagnostics

Allison DOC 2021.5 is the go-to solution for transmission specialists and commercial fleet service technicians. With official support for all major Allison series, it ensures fast, reliable communication with your vehicle’s TCM.

Buy Now – Instant Download with Lifetime Support

🛒 Order today and receive immediate download access, plus expert installation support.

• 100% Activation Guarantee
• No Expiry or Subscription Fees
• Installation Help Available After Purchase

What’s Included:

Your purchase includes everything you need to start working:

• Full software installer (digital download)
• No activation needed – plug and play
• Step-by-step installation video guide
• Lifetime license – no expiry or subscription
• Support via email or Whatsapp

Installation Support Included:

• Every purchase from Diagnosticz includes step-by-step PDF or video installation guides.
• Need help? Our team provides free remote support to assist you with installation and activation if needed.
• Just contact us via email or chat after purchase, and we'll get you up and running quickly.

Important Notice (Please Read Before Installation):

• Please turn off your antivirus software before starting the installation. Some antivirus programs may flag key activation or patch files as false positives.
• For each software purchased from Diagnosticz, you will receive detailed step-by-step instructions or an installation video guide to ensure a smooth setup process.

Instant Download Available After Purchase by Email
Lifetime License (One PC Installation)