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 MANUALSBUICK1996ROADMASTER BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION SERVICINGLUBRICATIONCHECKING FLUID LEVEL4T40-E
1996 Buick Roadmaster Base
Checking Fluid Level: 4T40-E
1996 Buick Roadmaster BaseSECTION 4T40-E
- Fluid level must be checked at temperature of 104°F (40°C). To obtain proper temperature:
- Idle vehicle for 3-5 minutes.
- Shift into each gear position, holding in each position for 3 seconds.
- Place gear selector in Park. Raise and support vehicle. Place oil drain pan below oil check plug. Oil check plug is located in center of transaxle above pan rail, on torque converter side. See Fig 1 . Remove oil check plug.
- Oil level should be at bottom of oil check plug hole. If fluid does not drain from hole, add fluid until fluid starts to pour from hole. Tighten oil check plug to 124 INCH lbs. (14 N.m).
CAUTION:
DO NOT
overfill transmission. When transmission is hot, one pint of fluid will raise fluid level from ADD 1 PT. or .5L mark to FULL HOT mark on dipstick.
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.