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 MANUALSBUICK1991CENTURY L4-151 2.5L VIN R TBIREPAIR AND DIAGNOSISMAINTENANCESERVICE AND REPAIRAUTOMATIC TRANSMISSION/TRANSAXLE SERVICEAUTOMATIC TRANSMISSION/TRANSAXLE SERVICE
1991 Buick Century L4-151 2.5L VIN R TBI
Automatic Transmission/Transaxle Service
1991 Buick Century L4-151 2.5L VIN R TBISECTION Automatic Transmission/Transaxle Service
AUTOMATIC TRANSMISSION/TRANSAXLE SERVICE
Change both the fluid and the filter (if equipped) according to the maintenance schedule intervals.
Change both the fluid and the filter (if equipped) according to the maintenance schedule intervals.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.