WTEC 3 Push Button Controller 29538373

Description

Allison 29538373 Shift Selector WTEC III Pushbutton Controller

Compatible years: approx. 2003–2006

The Allison 29538373 is a WTEC III pushbutton shift selector designed for use in medium- and heavy-duty vehicles with WTEC III automatic transmission systems. Mounted inside the cab, this unit allows the driver to manually select gears and communicates directly with the transmission control module (TCM).

This selector is a removable, bench-tested OEM component, remanufactured and verified for full electrical function and gear display integrity.

Important notice about this item: We offer free diagnosis and bench testing of your unit. All you pay is shipping. Send us your unit and we will put it on our custom bench and test unit for functionality and codes. You will receive a comprehensive report telling you of our findings. This will give you the assurance that you made the right choice! All testing will be performed within same day of receiving item. If unit is found to be in good working order we will advise fixes for any codes that are present including troubleshoot steps and wiring drawings. FREE!

Send us a message and we will go to work for you.

Compatibility

Compatible with 29538376 CEC2 controller for Allison 5000, 6000, 8000 and 9000 series transmissions.

Superseded Part Numbers:

• 29538376, 29538372, 29529429
• 29538022
• 29538360
• 29538371
• 29529430
• 29538356

Common symptoms of a failing shift selector

• Dead or blank gear display

• Buttons do not respond or stick

• Gear selection does not register

• Flashing lights or incorrect gear indication

• Transmission stuck in gear or neutral

• Codes such as 2312, 6927, or 6934 present

Selector failure can result in complete transmission inoperability—even if the TCM is functional.

Pre-replacement checklist

Before replacing your selector, confirm:

1. 12V power to selector connector

2. Connector pins are clean, tight, and corrosion-free

3. Ground and ignition circuits are solid

4. Scan tool shows selector-related fault codes

5. Moisture intrusion or wear around display or buttons

Reaction Force offers free bench testing to confirm selector failure before you buy.

Related diagnostic trouble codes

These are commonly tied to selector faults in WTEC III systems:

• 2312 – Shift selector failure

• 6927 – Shift selector communication fault

• 6928 – Pushbutton fault

• 6929 – Display failure

• 6934 – TCM initialization failure

Installation notes

• Disconnect battery before installation

• Mount selector in OEM dash location

• Plug in connector securely—check for clean contact

• Test gear selections with ignition on

• Clear stored codes and road test after install

Need help?

Reaction Force provides:

• Free shift selector diagnostics

• Bench testing before or after install

• Help confirming WTEC II vs. III system fitment

• Support matching the right TCM + shift pad combo

Call Reaction Force LLC (503) 862-6322 today.

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

Frequently asked questions

1. What does the 29538373 shift selector do?
It allows the driver to select gears manually and relays commands to the transmission via the WTEC III TCM.

2. What’s the difference between WTEC II and WTEC III selectors?
WTEC III selectors have updated internals and programming logic. They are not interchangeable with WTEC II units.

3. What codes are related to selector failure?
2312 is the most common. You may also see 6927–6929 or initialization errors like 6934.

4. Do I need to program this after install?
No programming is needed—just plug it in and test.

5. What’s the warranty on this unit?
6-month warranty with refund or exchange through Reaction Force.

Core Deposit Policy – Parts

Core deposit is fully refundable once complete, “like for like” unit is returned to RF LLC. Buyer pays return shipping and is responsible for any loss of item during shipping. If the unit returned is incomplete or not “like for like” a pro-rated refund will be applied.

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