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 MANUALSCADILLAC1991SEVILLE STSREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSSERVICING - A/TLUBRICATIONCHECKING FLUID LEVEL
1991 Cadillac Seville STS
Checking Fluid Level
1991 Cadillac Seville STSSECTION Checking Fluid Level
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.
- Start engine and operate vehicle for at least 15 minutes or until reaching operating temperature. With engine at curb idle and vehicle on level ground, move gear selector lever through all ranges ending in the "P" position.
- Remove transmission dipstick, wipe clean and fully reinsert into filler tube. Remove again and inspect fluid level. Fluid level should be between the "ADD 1 PT. OR .5L" mark and the "FULL HOT" mark on dipstick.
CAUTION:
If vehicle has been driven for an extended period of time at high speeds, in city traffic, hot weather, or if vehicle has been pulling a trailer, an accurate fluid level reading cannot be made until vehicle has been parked and ATF is allowed to cool about 30 minutes.
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.