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Allison Navistar Selector Assembly Part #29551499

Code: 29551499

Allison Navistar Pushbutton Assembly part #29551499

Reaction Force LLC provides FREE BENCH TESTING and over-the-phone diagnostics. Questions about your Allison part? Call us at (503) 862-6322.

Condition: Good, Used

Recalibration: Included

Compatible years: 2006-2024

Warranty: 6 months

$459.97

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Description

Allison Navistar Pushbutton Assembly Part #29551499

Compatible years: Approx. 2006–2024

Condition: Good (used)

The Allison 29551499 is a pushbutton shift selector assembly used in Navistar (International) vehicles equipped with 4th and 5th Generation Allison automatic transmissions. Designed specifically for vocational and commercial applications, this selector is a direct interface between the driver and the transmission control module (TCM).

This unit has been bench-tested to meet operational standards and fully compatible with Navistar chassis using Allison 1000–4000 Series transmissions.

Common symptoms of a bad shift selector

  • Gear display is blank or flashing

  • Buttons are unresponsive or sticky

  • Vehicle stuck in neutral or drive

  • Codes like 2312, P0700, or U0101 present

  • Communication loss between selector and TCM

  • “Do Not Shift” or limp mode activation

These issues are especially common when selector assemblies have internal moisture damage or degraded switch contact points.

Pre-replacement checklist

Before replacing your selector, verify:

  1. Voltage at selector plug – Confirm 12V supply

  2. Shift pad harness integrity – No frayed or damaged wires

  3. Clean ground and ignition signal

  4. Scan for U-codes or switch input faults

  5. Check for moisture or internal corrosion – a common failure point in older selector pads

Need help testing? Reaction Force offers free bench testing and diagnostics.

Related diagnostic trouble codes

These codes often indicate selector failure or communication issues:

  • 2312 – Shift selector failure

  • P0700 – Transmission system fault

  • U0101 – Lost communication with TCM

  • P0919 – Gear shift circuit range error

  • P0826 – Switch input malfunction

If these codes persist after clearing and basic diagnostics, replacing the selector may resolve the issue.

Installation notes

  • Disconnect vehicle battery before installation

  • Mount in original selector location in dash

  • Inspect and clean connector pins before plugging in

  • After install, verify selector function and clear any DTCs

  • Programming may be required depending on TCM configuration

Need help?

Reaction Force offers:

  • Free shift selector diagnostics

  • Bench testing before/after install

  • Help identifying compatible Navistar platforms

  • Guidance on programming or calibration steps

Call (503) 862-6322

Name

Images are for representation purposes only. For reman and RTO purchases a photo of the actual item you are receiving will be sent for approval prior to shipping.

Please see our warranty, shipping, refund, and return policies.

Frequently asked questions

1. What vehicles use the 29551499 selector?
It’s commonly found in Navistar International trucks and buses using 4th or 5th Gen Allison transmissions.

2. Is this plug-and-play?
Often yes, but some vehicles may require selector calibration through the TCM after install.

3. What’s the difference between this and other selectors?
This model is Navistar-specific and may differ in programming or mounting from universal versions like 29551555 or 29551556.

4. Will it work with a 29551869 A59 TCM?
Yes, it is compatible with both standard 4th Gen and A59 updated TCMs.

5. What’s the warranty on this part?
6-month exchange/refund warranty through Reaction Force.

Additional information

Weight 3 lbs
Dimensions 9 × 9 × 4 in
Applications for 29551499

This shift selector is typically used in the following: International DuraStar (4300, 4400 series) Navistar 3000–7000 series vocational trucks IC Bus CE and RE school buses International medium-duty chassis (fire, utility, refuse) Shuttle and transit vehicles with Navistar platforms
Compatible Allison transmissions

1000 / 2000 Series 3000 Series 4000 Series Note: Supports both Gen 4 and Gen 5 TCMs across a wide range of commercial-duty uses.
Product specifications

Part number: 29551499 Type: Pushbutton selector assembly Compatibility: Navistar chassis with Gen 4/5 Allison systems (2006–2024) Condition: Remanufactured and bench-tested Warranty: 6-month limited warranty

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