Buick Regal 2018-2026 Service Manual / Engine / Engine Cooling / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
- DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LTG)
- DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LGX)
- DTC P1258
- Symptoms - Engine Cooling
- Cooling Fan Always On (Dual Fan)
- Cooling Fan Always On (Single Fan)
- Cooling Fan Inoperative (LGX)
- Cooling Fan Inoperative (LTG)
- Pressure Cap Testing
- Cooling System Leak Testing (Pressure Test)
READ NEXT:
DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LTG)
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.
Diag
DTC P0480, P0481, P0691, P0692, P0693, or P0694 (LGX)
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.
Diag
DTC P1258
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.
Diag
SEE MORE:
Rear Brake Hose Replacement (GNC)
Removal Procedure
WARNING: Brake Dust Warning
WARNING: Brake Fluid Irritant Warning
1. Raise and support the vehicle.
2. Remove the tire and wheel assembly.
3.
Brake Pipe Fitting(1) - Disconnect.
4. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
5.
Brake Hose Retainer
Wire to Wire Repair - Seats
Special Tools
EL-38125-10 Splice Sleeve Crimping Tool
J-38125-5A Ultra Torch Special Tool
J-38125-8 Splice Sleeve Crimping Tool
For equivalent regional tools, refer to Special Tools.
WARNING: In order to reduce the risk of personal injury, loss of high
voltage
isolation to ground and higher sy
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