P1785 Buick Transmission Mechanical Failure – First And Second Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano…
Category: Buick
P1785 Buick Transmission Mechanical Failure – First And Second
P1786 Buick 3-2 Downshift Error Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave –…
P1786 Buick 3-2 Downshift Error
P1787 Buick 2-1 Downshift Error Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave –…
P1781 Buick 4×4 Low Switch is Out of Self-Test Range
P1782 Buick 2/4-OD Pressure Switch Circuit Possible causes – Low transmission fluid level – Dirty transmission fluid – Faulty 2/4-OD Pressure Switch – 2/4-OD Pressure switch poor electrical connection – 2/4-OD Pressure switch circuit is open or shorted Symptoms – Engine Light ON (or Service Engine Soon Warning Light) – Transmission shift shock P1782 Buick…
P1782 Buick 2/4-OD Pressure Switch Circuit
P1783 Buick Transmission Overtemperature Condition Possible causes – Transmission temperature sensor harness is open or shorted– Transmission temperature sensor circuit poor electrical connection– Faulty transmission temperature sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1783 Buick Description Engine at operating temperature and the Engine Control Module (ECM) detected the transmission temperature…
P1779 Buick Transmission Control Indicator Lamp Circuit Malfunction
P1780 Buick Park/Neutral Position Switch Malfunction Possible causes – Faulty Park/Neutral Position (PNP) switch– Park/Neutral Position (PNP) switch harness is open or shorted– Park/Neutral Position (PNP) switch circuit poor electrical connection– Misadjusted Park/Neutral Position (PNP) switch Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1780 Buick Description The Park/Neutral Position (PNP) switch…
P1780 Buick Park/Neutral Position Switch Malfunction
P1781 Buick 4×4 Low Switch is Out of Self-Test Range Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier –…
P1776 Buick Ignition Retard Request Duration Fault
P1777 Buick Ignition Retard Request Circuit Fault Possible causes – Step Motor harness is open or shorted – Step Motor poor electrical connection – Faulty Step Motor P1777 Buick Description The step motor changes the step with turning 4 coils ON/OFF according to the signal from Transmission Control Module (TCM). As a result, the flow…
P1777 Buick Ignition Retard Request Circuit Fault
P1778 Buick Transmission Reverse I/P Circuit Malfunction Possible causes – Faulty Step Motor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1778 Buick Description The step motor’s 4 aspects of ON/OFF change according to the signal from Transmission Control Module (TCM). As a result, the flow of line pressure to primary pulley…
P1778 Buick Transmission Reverse I/P Circuit Malfunction
P1779 Buick Transmission Control Indicator Lamp Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano –…
P1772 Buick Low Coast Brake Solenoid Valve
P1773 Buick Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick…
P1773 Buick Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit
P1774 Buick Low Coast Brake Solenoid Valve Function Possible causes – Faulty Low Coast Brake Solenoid Valve– Low Coast Brake Solenoid Valve harness is open or shorted– Low Coast Brake Solenoid Valve circuit poor electrical connection Tech description There is a service bulletin for a various Models with the RE5R05A transmission.Factory Service Bulletin OBDII Code…
P1774 Buick Low Coast Brake Solenoid Valve Function
P1775 Buick Transmission System MIL Fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave…
P1775 Buick Transmission System MIL Fault
P1776 Buick Ignition Retard Request Duration Fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick…
P1768 Buick A/T Clutch Pressure Control Solenoid Valve Circuit
P1769 Buick High and Low Reverse Clutch Solenoid Valve Function Possible causes – Faulty High and Low Reverse Clutch Solenoid Valve– High and Low Reverse Clutch Solenoid Valve harness is open or shorted– High and Low Reverse Clutch Solenoid Valve circuit poor electrical connection Tech description There is a service bulletin for a various Models…
P1769 Buick High and Low Reverse Clutch Solenoid Valve Function
P1770 Buick Clutch Solenoid Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave…
P1770 Buick Clutch Solenoid Circuit Malfunction
P1771 Buick Shifting Position Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza –…
P1771 Buick Shifting Position
P1772 Buick Low Coast Brake Solenoid Valve Possible causes – Faulty Low Coast Brake Solenoid Valve– Low Coast Brake Solenoid Valve harness is open or shorted– Low Coast Brake Solenoid Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1772 Buick Description Low coast brake solenoid valve is…
P1765 Buick Timing Solenoid Circuit Malfunction
P1766 Buick Torque Reduction Execution Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza…
P1766 Buick Torque Reduction Execution
P1767 Buick High and Low Reverse Clutch Solenoid Valve Possible causes – Faulty High and Low Reverse Clutch Solenoid Valve– High and Low Reverse Clutch Solenoid Valve harness is open or shorted– High and Low Reverse Clutch Solenoid Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1767…