Sonnax

8L45 8L90 Oversized Actuator Feed Limit Valve Kit by Sonnax

8L45 8L90 Oversized Actuator Feed Limit Valve Kit by Sonnax Part No. 154740-38K Tooling: F-154740-TL38 VB-FIX The actuator feed limit (AFL) valve in GM 8L45 and 8L90 transmissions functions to...

8L45 8L90 Oversized Pressure Regulator & O-Ringed Shuttle Valve Kit by Sonnax

8L45 8L90 Oversized Pressure Regulator & O-Ringed Shuttle Valve Kit by Sonnax Part No. 154740-31K Tooling: 154740-TL32 Vehicles with GM 8L45 and 8L90 transmissions may exhibit high or low...

8L45 8L90 S1 S5 Clutch Control Valve Kit | Sonnax

8L45, 8L90 S1/S5 Clutch Control Valve KitPart No. 154740-13K Fits Either of 2 Locations! Burnt clutches and poor shifts are common issues with GM 8L45 and 8L90 transmissions. These issues...

8L45 8L90 S2 S3 S4 TCC Clutch Control Valve Kit | Sonnax

8L45, 8L90 S2/S3/S4/TCC Clutch Control Valve KitPart No. 154740-11K Fits any of 4 locations, S4 location fits '18-earlier...

8L45 8L90 Tool Kit for 154740-31K

Tool Kit for 154740-31K Part No. 154740-TL32 Tool Kit for 154740-31K. Contents: Reamer #1 Reamer #2 View Instructions Here

8L45 8L90 Tool Kit for 154740-38K

Tool Kit for 154740-38K Part No. F-154740-TL38 Tooling: VB-FIX Tool Kit for 154740-38K. Note: Sonnax F-Tool kits designed to service a specific bore require the VB-FIX, a self-aligning...

8L90 8L45 1-3-5-6-7 Accumulator Piston Kit

1-3-5-6-7 Accumulator Piston KitPart No. 154740-15K In GM 8L45 and 8L90 transmissions, the 1-3-5-6-7 accumulator piston is utilized during apply of the 1-3-5-6-7 clutches to smooth engagement...

8L90 8L45 Bore Sizing Tool (Use w/ 154740-11K)

Sonnax bore sizing tool 154740-BST11 smooths and deburrs clutch control valve bores and may be needed to ensure proper clearance and function of Sonnax S2/S3/S4/TCC clutch control valve...

8L90 8L45 Bore Sizing Tool (Use w/ 154740-13K)

Sonnax bore sizing tool 154740-BST13 smooths and deburrs clutch control valve bores and may be needed to ensure proper clearance and function of Sonnax S1/S5 clutch control valve kit 154740-13K.

8L90 8L45 Clutch Control Valve Vacuum Test Tool Kit

The GM 8L45 and 8L90 clutch control valves have an inboard valve spool fed by a hole through the valve into the casting. This design makes vacuum testing the inboard spool and casting by traditional...

8L90 8L45 Converter Feed Limit Valve Kit | Sonnax

Recommended Tooling: 154740-TL22 GM 8L45 and 8L90 units may have TCC apply and release problems. Bore wear or a stuck converter feed limit valve can result in converter overheat, incorrect TCC apply...

8L90 8L45 Converter Feed Limit Valve Vacuum Test Tool

The GM 8L45 and 8L90 converter feed limit valve has an inboard valve spool fed by a hole through the valve into a blind port in the casting. This design makes vacuum testing the inboard spool and...

8L90 8L45 O-Ringed End Plug Kit | Sonnax

OE end plugs are designed to prevent critical pressure loss by capping the bore, while also functioning as a spring or valve stop. Repetitive spring motion, valve impact and fluid pressure variations...

8L90 8L45 O-Ringed Shuttle Valve Kit | Sonnax

Vehicles with a GM 8L45 or 8L90 transmission may exhibit high line pressure that results in harsh shifts, loss of cooler and lube flow and overheating of the transmission and converter. These...

8L90 8L45 Oversized Converter Feed Limit Valve Kit | Sonnax

Required Tooling: F-154740-TL22, 15470-TL22, VB-FIX GM 8L45 and 8L90 transmissions may have TCC apply and release problems. Bore wear or a stuck converter feed limit valve can result in converter...

8L90 8L45 Oversized S4 Clutch Control Valve Kit (2019-UP) Sonnax

Fits 2019-later units only! Tooling Required: F-154740-TL26, VB-FIX Pressure loss, a burnt 2-3-4-6-8 (S4) clutch and poor shift quality are common complaints with GM 8L45 and 8L90 transmissions...

8L90 8L45 Oversized Signal Accumulator Piston Kit (2019-UP) Sonnax

2019-UP UNITS ONLY! Tooling Required: 154740-TL GM 8L45 and 8L90 transmissions often suffer burnt clutches, shift concerns, low line pressure and/or converter apply complaints due to excess wear in...

8L90 8L45 Pressure Regulator & O-Ringed Shuttle Valve Kit | Sonnax

Vehicles with GM 8L45 or 8L90 transmissions may exhibit high or low line pressure that results in harsh shifts, burnt clutches, loss of cooler and lube flow and overheating of the transmission and...

8L90 8L45 Pressure Regulator & Shuttle Valve Kit | Sonnax

Vehicles with a GM 8L45 or 8L90 transmission may exhibit high or low line pressure that results in harsh/soft shifts, burnt clutches, loss of cooler and lube flow and overheating of the transmission...

8L90 8L45 Pressure Relief Ball Valve Spring (Pack of 5) Sonnax

The GM 8L45 and 8L90 transmissions are having a recurring problem where the typical ball and spring seat is not opening and relieving pressure effectively. The OE spring design needs to see 400+ psi...