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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For vehicles with Rear Seat Audio (RSA), rear seat passengers can listen to and
control any of the music sources: radio, CDs, DVDs, or other auxiliary sources.
The rear seat passengers can only control the music sources the front seat passengers
are not listening to (except on some radios where
SCHEMATIC WIRING DIAGRAMS
SHIFT LOCK CONTROL WIRING SCHEMATICS
Shift Lock Control System
Fig. 1: Shift Lock Wiring Schematic
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSTIC CODE INDEX
DTC B2705: GEARSHIFT UNLOCK CIRCUIT SHORT TO GROUND
Diagnostic Instructions
Perform the Diagnostic System Check