Description
The Allison 3000RDS with PTO (Part #29560392) is a workhorse transmission built for mid-to-heavy duty trucks and equipment requiring PTO functionality. This 5th Generation unit offers proven reliability for fleets in construction, municipal services, utility, and emergency response.
Professionally remanufactured and inspected by technicians with 20+ years of Allison-specific expertise, this transmission is ready for installation in compatible platforms across a wide range of vocational applications.
Signs Your 29560392 Transmission May Need Replacement
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Delayed shifting or gear slipping, especially under load
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Sudden neutral condition or failure to engage
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Loss of PTO function or inconsistent engagement
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Overheating or signs of fluid degradation
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Transmission fault light or gear display blinking codes (e.g., “D1”, “D4”)
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Increased downtime or recurring error codes despite prior repairs
These are early warning signs that your Allison 3000RDS may be reaching the end of its service life. We can help confirm fitment and availability.
Pre-Installation Checklist
Before installation, confirm the following:
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Transmission Control Module (TCM) is compatible with Gen 5 calibration
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All cooling lines are flushed and system is free of contaminants
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PTO systems are inspected for wear or misalignment
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Electrical connectors and harnesses are in good condition
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Approved transmission fluid is on hand (TES-295)
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Torque converter is correctly aligned and seated
Common Diagnostic Codes (1996–2006 Era)
For 5th Gen Allison 3000RDS units from this era, diagnostic trouble codes (DTCs) typically appear via shift selector lights. Some frequently encountered codes include:
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D1: Main pressure switch or ratio error
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D2: Gearbox slipping or shift valve issue
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D4: Output speed sensor malfunction
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D5: Torque converter clutch (TCC) failure or solenoid problem
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Flashing “N”: General fault — often signals need for full scan
If you’re not sure what the code means, we can help interpret it and recommend next steps before you commit to a replacement.
Allison 3000RDS Series with PTO 5th Gen 29560392 priced without a core deposit. Reman Allison Exchange Transmission with 2 year unlimited mile warranty. Buyer pays all freight for delivery of reman exchange transmission and core return. We can provide freight quotes upon request. Local pickup and free delivery within 100 miles is available. If within 300 miles, please call to see if we can still deliver for free! If we deliver this unit, we include free reflash of your TCM. Price does not include fully refundable core deposit. Please see policies page for core criteria and warranty details. Image is representation. You may request pictures of actual unit.
Need a quote? Let us know!
Images are for representational purposes only.
Frequently Asked Questions People Also Ask
1. What vehicles use the Allison 29560392 transmission?
This part number appears in vocational platforms such as Freightliner, International, Kenworth, and other mid/heavy-duty truck models from 1996 to early 2000s.
2. Is this a direct replacement for my 3000 Series PTO transmission?
If your current unit is 29560392 or another Gen 5 3000RDS with PTO, this is likely a direct fit. Contact us with your VIN or current tag number to confirm.
3. How do I know if the PTO function is working correctly?
Watch for PTO engagement delays, failure to hold torque, or fault lights. A failing PTO-equipped transmission may still drive, but performance can be degraded.
4. What’s the difference between 29560392 and 29560393?
The internal calibrations and mounting variations may differ slightly. Always verify your exact part number to ensure a proper match.
5. Can I install this transmission myself?
We recommend professional installation by a technician with Allison experience to avoid common pitfalls like TCM mismatch or PTO misalignment.
