Buick Regal 2018-2026 Service Manual / Accessories and Equipment / Cruise Control System / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
- DTC B3623, B3794, P0564, P0565, P0567, P0568, P056C, P0580, P0581, P0589, P0592, P0593, P155A-P155C, or P162C
- DTC P0571
- DTC P0572 or P0573
- DTC P0575
- DTC P0703
- DTC P1553
- DTC P158A
- Symptoms - Cruise Control
- Cruise Control Malfunction
READ NEXT:
DTC B3623, B3794, P0564, P0565, P0567, P0568, P056C, P0580, P0581, P0589,
P0592, P0593,
P155A-P155C, or P162C
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Diagnostic
System Check - Vehicle
Review the description of Strategy Based Diagnosis: Strate
DTC P0571
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure:Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy
DTC P0572 or P0573
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Diagnostic
System Check - Vehicle
Review the description of Strategy Based Diagnosis:Strateg
SEE MORE:
DTC B255D
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 Descriptor
DT
Exterior Lighting
The exterior lamp control is on the
instrument panel to the left of the
steering column.
There are four positions.
: Turns the exterior lamps off and
deactivates the AUTO mode. Turn
to again to reactivate the
AUTO mode.
In Canada, the headlamps will
automatically reactivate when the
vehicle is
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