Category: Chevrolet

P1788 Chevrolet Pressure Control Solenoid B Open Circuit Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1785 Chevrolet Transmission Mechanical Failure – First And Second Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1786 Chevrolet 3-2 Downshift Error Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1781 Chevrolet 4×4 Low Switch is Out of Self-Test Range

P1782 Chevrolet 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 Chevrolet…

P1783 Chevrolet 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 Chevrolet Description Engine at operating temperature and the Engine Control Module (ECM) detected the transmission temperature…

P1784 Chevrolet Transmission Mechanical Failure – First And Reverse Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1777 Chevrolet Ignition Retard Request Circuit Fault Possible causes – Step Motor harness is open or shorted – Step Motor poor electrical connection – Faulty Step Motor P1777 Chevrolet 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…

P1778 Chevrolet Transmission Reverse I/P Circuit Malfunction Possible causes – Faulty Step Motor Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1778 Chevrolet 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…

P1779 Chevrolet Transmission Control Indicator Lamp Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1780 Chevrolet 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 Chevrolet Description The Park/Neutral Position (PNP) switch…

P1773 Chevrolet Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit

P1774 Chevrolet 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…

P1775 Chevrolet Transmission System MIL Fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1776 Chevrolet Ignition Retard Request Duration Fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1771 Chevrolet Shifting Position

P1772 Chevrolet 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 Chevrolet Description Low coast brake solenoid valve is…

P1769 Chevrolet 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…

P1770 Chevrolet Clutch Solenoid Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P1765 Chevrolet Timing Solenoid Circuit Malfunction Symptoms – Engine Light ON (or Service Engine Soon Warning Light)