Fits: 2001 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY Duramax Diesel 

*Sold Individually*

Brand New aftermarket Allison Pressure Control Solenoid 1 aka "A-Trim" for Duramax with Allison 1000 5-Speed Transmission.

Only one is needed per Transmission. 

Replaces Part#: 

• Allison 29533074