Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1995FORWARD CONTROL 4.3 Z, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION OVERHAUL - 4L80-ETROUBLE SHOOTINGCLUTCH & BAND APPLICATION
1995 Chevrolet Forward Control 4.3 Z, Automatic
Clutch & Band Application
1995 Chevrolet Forward Control 4.3 Z, AutomaticSECTION Clutch & Band Application
CLUTCH & BAND APPLICATION CHART (4L80-E)
| Selector Lever Position | Solenoid Positions | Elements In Use | |||||||
|---|---|---|---|---|---|---|---|---|---|
| "D" (Overdrive) | |||||||||
| 1st Gear | "A" ON/"B" OFF | (1) Overdrive Roller Clutch, Forward Clutch, (2) Intermediate Sprag Clutch & (1) Low Roller Clutch | |||||||
| 2nd Gear | "A" OFF/"B" OFF | (1) Overdrive Roller Clutch, Forward Clutch, (1) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| 3rd Gear | "A" OFF/"B" ON | (1) Overdrive Roller Clutch, Forward Clutch, Direct Clutch, (3) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| Overdrive | "A" ON/"B" ON | 4th Clutch, (3) Overdrive Roller Clutch, Forward Clutch, Direct Clutch, (3) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| "D" (Manual 3rd) | |||||||||
| 1st Gear | "A" ON/"B" OFF | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, (2) Intermediate Sprag Clutch & (1) Low Roller Clutch | |||||||
| 2nd Gear | "A" OFF/"B" OFF | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, (1) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| 3rd Gear | "A" OFF/"B" ON | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, Direct Clutch, (3) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| "2" (Manual 2nd) | |||||||||
| 1st Gear | "A" ON/"B" OFF | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, (2) Intermediate Sprag Clutch & (1) Low Roller Clutch | |||||||
| 2nd Gear | "A" OFF/"B" OFF | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, Front Band, (1) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| "1" (Manual Low) | |||||||||
| 1st Gear | "A" ON/"B" OFF | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, (2) Intermediate Sprag Clutch, (1) Low Roller Clutch & Rear Band | |||||||
| 2nd Gear | "A" OFF/"B" OFF | Overrun Clutch, (1) Overdrive Roller Clutch, Forward Clutch, Front Band, (1) Intermediate Sprag Clutch, Intermediate Clutch & (3) Low Roller Clutch | |||||||
| "R" (Reverse) | "A" ON/"B" OFF | (1) Overdrive Roller Clutch, Direct Clutch & Rear Band | |||||||
| "N" (Neutral | "A" ON/"B" OFF | (1) Overdrive Roller Clutch Holding, All Other Clutches & Bands Released Or Ineffective | |||||||
| "P" (Park) | "A" ON/"B" OFF | (1) Overdrive Roller Clutch Holding, All Other Clutches & Bands Released Or Ineffective | |||||||
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RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.