Product Description
8L45, 8L90
S2/S3/S4/TCC Clutch Control Valve Kit
Part No. 154740-11K
Fits any of 4 locations, S4 location fits '18-earlier only
Requires:
- 154740-TL11 (Recommended)
- 154740-BST11 (Recommended)
Burnt clutches, poor shift quality, overheated converters and TCC apply or release issues are common complaints with GM 8L45 and 8L90 transmissions. These issues can be caused by worn clutch control valves bores allowing valuable clutch apply fluid pressure to leak, reducing the force needed to apply the clutches. Sonnax S2/S3/S4/TCC clutch control valve kit 154740-11K is a drop-in valve with an added seal at the signal apply end and lengthened inboard spool at the clutch apply end that seals worn bores and restores proper function.
- Hardcoat anodized aluminum valve combats premature wear
- Lengthened valve spool utilizes unworn bore section to seal apply oil
- Scarf cut seals prevent leaks at the signal apply end for proper clutch control
- Drop-in Zip Valve™ parts install quickly and easily
Sonnax bore sizing tool 154740-BST11 may be needed to ensure proper clearance between the valve and bore.
- Valve
- Spring, White Selective, S2, S3, S4
- Spring, Red Selective, TCC
- Seal
