4L80E TCC Regulator Valve Kit 1991-2013 34994-TL18 Sonnax

Sonnax TCC Regulator Valve Kit 4L80E

Specifications

• Corrects common shift quality complaints
• Fits 1991-2013 GM Silverado/Sierra 2500/3500, Express/Savana, Suburban, Hummer H1/H2
• Complete instructions included
• Professional installation recommended
• Improves shift firmness and timing

Quality & Service

Meets or exceeds OEM specifications. Professional installation recommended.Core Transmission Supply stocks only trusted brands and thoroughly inspected components to ensure your rebuild goes smoothly.

Professional installation recommended. Contact us for technical questions about fitment and compatibility.

Technical Documentation

View Installation Sheet (PDF) — manufacturer instructions and specifications.