December 04, 2023
GM 6L45, 6L50, 6L80, 6L90 Valve Body Layout
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. Each layout:
- Displays an exploded view location guide for individual valve trains
- Identifies symptoms and recommended solutions for quality rebuilds
- Provides active links to view specific part details
- Lists any tools/fixtures required for part installation
- Illustrates correct part orientation
With more than 60 layouts to choose from, these convenient, go-to reference guides are valuable resources for any shop.
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Related Units
Related Parts
Required
Recommended
Required
Recommended
6L45, 6L50, 6L80, 6L90
Oversized Converter Feed Limit Valve 104520-11
-
Helps cure:
- High TCC slip RPM
- Code P0218
- Code P0741
- Overheated converter
- Inadequate lubrication
- Excess converter pressure
Required
Recommended
6L45, 6L50, 6L80, 6L90
Oversized Clutch Boost Valve 104740-01
Fits any of 3 locations
-
Helps cure:
- Shift quality is not load sensitive
- Clutch pressure solenoid codes
- Burnt clutches
- Delayed engagement
- Harsh shifts
- Slide shifts
- Slip codes
- Slips & flares
Required
Recommended
6L45, 6L50, 6L80, 6L90
Clutch Select Valve Spring Kit 104740-02K
Fits mid '10–earlier. Compatible with all models except early, 1st design 6L80 plate 24246916.
-
Helps cure:
- Code P0751
- 1-2-3-4 Clutch burned
- 3-5-Reverse clutch burned
- Cruise control disabled
Required
Recommended
6L45, 6L50, 6L80, 6L90
Oversized TCC Regulator Valve Kit 104740-07K
-
Helps cure:
- Code P0741, P0742
- High TCC slip RPM
- Overheated fluid
- Failsafe mode
- Harsh shifts
- Harsh TCC apply
- Loss of fuel economy
Required
Recommended
6L45, 6L50, 6L80, 6L90, 6T30 (Gen. 1), 6T40 (Gen. 1), 6T45 (Gen. 1), 6T50 (Gen. 1)
Compensator Feed Regulator Valve Kit 104740-09K
Required
Recommended
6L45, 6L50, 6L80, 6L90
Oversized Actuator Feed Limit Valve 104740-12
-
Helps cure:
- Solenoid performance codes
- Clutch failure
- Wrong gear starts
- Harsh shifts
- Soft shifts
Required
Recommended
6L45, 6L50, 6L80, 6L90
Oversized Pressure Regulator & Boost Valve Kit 104520-07K
-
Helps cure:
- Erratic line pressure
- High line pressure
- Low line pressure
- Clutch slippage
- Harsh shifts
- Low cooler flow
- Burnt clutches
- No cooler flow
- Overheated transmission
- Converter concerns
Required
Recommended
6L45, 6L50, 6L80, 6L90
TCC Regulator Valve Spring 104740-45K
-
Helps cure:
- Vibration
- Shudder condition
Required
Recommended
6L45, 6L50, 6L80, 6L90
Selective Pump Thrust Washer 33452A
- Material: Nylon
- Thickness: 0.080"
-
Helps cure:
- Excess endplay
Required
Recommended
6L45, 6L50, 6L80, 6L90
Pump Bushing 104034A
Not for use in 6L45 BMW models, which have a bearing in that position.
- Bushing Style: Precision
- Material: PTFE-Impregnated Bimetal
- Housing Bore: 1.994"
- Shaft Dia.: 1.834"
- Width: 0.782"
-
Helps cure:
- Premature wear & bushing failure
- Excess converter hub-to-bushing clearance
- Pump noise
Required
Recommended
6L45, 6L50, 6L80, 6L90, 6T70 (Gen. 1), 6T75 (Gen. 1)
Pressure Switch Plastic Piston 124740-72K
-
Helps cure:
- Lost or damaged component
Required
Recommended
6L45, 6L50, 6L80, 6L90, 6T70 (Gen. 1), 6T75 (Gen. 1)
Pressure Switch Rebuild Kit 124740-70K
-
Helps cure:
- Pressure switch codes
- Switch codes
- Pressure control out-of-range codes
- Slips, flares & bind-ups
- Failsafe mode
- Erratic TCC apply
- Harsh shifts
- Shift codes
Required
Recommended
6L80, 6L90
The Sure Cure® Kit SC-6L80-6L90
-
Helps cure:
- Burnt clutches
- High TCC slip RPM
- Shift concerns
- Low cooler flow
- Harsh shifts
- Clutch slippage
- Overheated transmission
- Code P0218
- Code P0741, P0742
While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.