Buick Enclave: Fuel
Use of the recommended fuel is an important part of the proper maintenance of
this vehicle. To help keep the engine clean and maintain optimum vehicle performance,
we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline.
Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced
detergency standards developed by auto companies. A list of marketers providing
TOP TIER Detergent Gasoline can be found at www.toptiergas.com.

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Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If
the octane rating is less than 87, an audible knocking noise, commonly referred
to as spark knock, mi
Fuels in Foreign Countries
Never use leaded gasoline or any other fuel not recommended in the previous text
on fuel. Costly repairs caused by use of improper fuel would not be covered by the
vehic
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All-Wheel Drive
Vehicles with this feature always send engine power to all four wheels. It is
fully automatic, and adjusts itself as needed for road conditions.
When using a compact spare tire on an AWD vehicle, the system automatically detects
the compact spare and disables AWD.
To restore A
REAR DIFFERENTIAL CLUTCH CONTROL MODULE REPLACEMENT
Removal Procedure
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Remove the propeller shaft assembly. Refer to Propeller Shaft Replacement.
3. Remove the torque tube mounting bolt.
Fig. 2: Identifying Torque Tube