The ACDelco / GM 29531095 is the OE automatic transmission input sun gear thrust bearing, known in Allison 1000 rebuild kits as the T3/T5 bearing. GM lists it for 2001–2019 Chevrolet Silverado and GMC Sierra HD trucks, including 6.6L Duramax models.

Features & Benefits

• OE input sun gear thrust bearing assembly, GM P/N 29531095
• Commonly referred to as the Allison 1000 T3/T5 bearing
• Genuine GM / ACDelco OE part, designed, engineered and tested to GM standards and backed by General Motors

Application

• Chevrolet Silverado / GMC Sierra 2500 HD / 3500 (2001–2019), incl. 6.6L Duramax diesel
• Also listed for 2001–2005 Suburban / Yukon XL 2500, 2002–2005 Avalanche 2500 and Escalade EXT

Diesel transmission suppliers note that when used in the T5 position it applies only to earlier transmission serial numbers; confirm with your transmission serial number.

Always verify fitment by VIN or by matching the GM/ACDelco part number on your original part before ordering.

Cross-Reference / OE Numbers

• GM: 29531095