Buick Regal 2018-2026 Owners Manual / Vehicle Care / Electrical System
Buick Regal: Electrical System
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Electrical System Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circui
Engine Compartment Fuse
Block
To remove the fuse block cover,
squeeze the three retaining clips on
the cover and lift it straight up.
Caution:
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep
Instrument Panel Fuse
Block
The instrument panel fuse block is
in the instrument panel, on the
driver side of the vehicle. To access
the fuses, press in on the sides of
the cover and pull to release it from
the instrument panel
SEE MORE:
DTC P127C, P128A, P128B, P16E4, or P16E5
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptors
D
Crankshaft Balancer Cleaning and Inspection
1. Crankshaft Balancer
WARNING: Refer to Safety Glasses Warning.
Procedure
Clean the crankshaft balancer.
Clean the belt grooves of all dirt or debris with a wire brush.
Dry the crankshaft balancer with compressed air.
Inspect the crankshaft balancer for the following:
Worn, grooved, or damag
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