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 MANUALSCHEVROLET1982CAMARO L4-151 2.5LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSA/T - SLIPPING OR NO THIRD GEAR AFTER OVERHAUL
1982 Chevrolet Camaro L4-151 2.5L
A/T - Slipping Or No Third Gear After Overhaul
1982 Chevrolet Camaro L4-151 2.5LSECTION A/T - Slipping Or No Third Gear After Overhaul
TSB: 86-58 (Nov).
SUBJECT Servo Release Seal
PROBLEM:
No third gear, or slipping third gear, after overhaul
TRANSMISSIONS AFFECTED:
Many domestic automatics that release an intermediate (second gear) band and apply a clutch for third gear.
EXAMPLES: THM 200, 200C, 2004R, C-4, C-6, FMX, 325, 325-4L
POSSIBLE CAUSE:
Leaking servo release seal. It may be broken, cut or worn.
When any of the transmissions listed above, and many others, shift from second gear into third gear, the band is released hydraulically, using third gear clutch oil. The second gear apply oil is not drained off. It remains on the apply side of the servo piston. In most instances, the servo release area is somewhat larger than the apply area. The space between apply and release is vented into the sump. Release oil leaking past the seal is exhausted into the sump.
CURE: Replace the servo release seal.
SUBJECT Servo Release Seal
PROBLEM:
No third gear, or slipping third gear, after overhaul
TRANSMISSIONS AFFECTED:
Many domestic automatics that release an intermediate (second gear) band and apply a clutch for third gear.
EXAMPLES: THM 200, 200C, 2004R, C-4, C-6, FMX, 325, 325-4L
POSSIBLE CAUSE:
Leaking servo release seal. It may be broken, cut or worn.
When any of the transmissions listed above, and many others, shift from second gear into third gear, the band is released hydraulically, using third gear clutch oil. The second gear apply oil is not drained off. It remains on the apply side of the servo piston. In most instances, the servo release area is somewhat larger than the apply area. The space between apply and release is vented into the sump. Release oil leaking past the seal is exhausted into the sump.
CURE: Replace the servo release seal.
RENDER: 1.0x
NO RELATED
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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.