Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 16 (COMPONENT CONNECTOR END VIEWS (Q37LR - S79P))
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Section 16 (Component Connector End Views (Q37LR - S79P))
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Section 16 (Component Connector End Views (Q37LR - S79P))
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
- Component Connector End Views
- Q37LR Shock Absorber Actuator - Left Rear
- Q37RF Shock Absorber Actuator - Right Front
- Q37RR Shock Absorber Actuator - Right Rear
- Q38 Throttle Body (L83/L86)
- Q38 Throttle Body (L96)
- Q43 Valve Lifter Oil Manifold Assembly
- Q44 Engine Oil Pressure Control Solenoid Valve
- Q46 A/C Compressor Solenoid Valve
- Q77A Transmission Control Solenoid Valve 1 (M5U)
- Q77A Transmission Control Solenoid Valve 1 (MF6)
- Q77B Transmission Control Solenoid Valve 2 (M5U)
- Q77B Transmission Control Solenoid Valve 2 (MF6)
- Q77C Transmission Control Solenoid Valve 3 (M5U)
- Q77C Transmission Control Solenoid Valve 3 (MF6)
- Q77D Transmission Control Solenoid Valve 4 (M5U)
- Q77D Transmission Control Solenoid Valve 4 (MF6)
- Q77E Transmission Control Solenoid Valve 5 (M5U)
- Q77E Transmission Control Solenoid Valve 5 (MF6)
- Q77F Transmission Control Solenoid Valve 6 (M5U)
- Q77F Transmission Control Solenoid Valve 6 (MF6)
- Q77G Transmission Control Solenoid Valve 7 (M5U)
- Q77G Transmission Control Solenoid Valve 7 (MF6)
- Q77H Transmission Control Solenoid Valve 8 (M5U)
- Q77H Transmission Control Solenoid Valve 8 (MF6)
- Q77J Transmission Control Solenoid Valve 9 (M5U)
- R6A Terminating Resistor - High Speed Bus
- R6E Terminating Resistor - High Speed Extension Bus 1 (UGN)
- R6E Terminating Resistor - High Speed Extension Bus 1 (-UGN)
- R6F Terminating Resistor - High Speed Extension Bus 2
- S3 Transmission Shift Lever
- S5 Center Console Compartment Lamp Switch
- S12 Dome Lamp Switch
- S13D Door Lock Switch - Driver (X88/Z88)
- S13D Door Lock Switch - Driver (Z75)
- S13P Door Lock Switch - Passenger (X88/Z88)
- S13P Door Lock Switch - Passenger (Z75)
- S25 Garage Door Opener
- S27 Head-Up Display Switch
- S30 Headlamp Switch
- S31D Seat Heating And Cooling Switch - Driver
- S31P Seat Heating And Cooling Switch - Passenger
- S33 Horn Switch
- S38 Ignition Mode Switch
- S39 Ignition Switch (-BTM)
- S43 Content Theft Deterrent Sensor Disable Switch
- S45B Liftgate Control Switch - Interior
- S46 Liftgate Handle Switch
- S46B Liftgate Unlatch Switch
- S47D Seat Memory Switch - Driver
- S48A Multifunction Switch - Instrument Panel
- S48C Multifunction Switch 1 - Instrument Panel
- S48D Multifunction Switch 2 - Instrument Panel
- S51 Telematics Button Assembly
- S52 Outside Rearview Mirror Switch (A45)
- S52 Outside Rearview Mirror Switch (-A45)
- S63 Roof Beacon Switch (TRW)
- S64D Seat Adjuster Switch - Driver (ULT)
- S64D Seat Adjuster Switch - Driver X1 (-ULT)
- S64D Seat Adjuster Switch - Driver X2 (-ULT)
- S64P Seat Adjuster Switch - Passenger (ULT)
- S64P Seat Adjuster Switch - Passenger X1 (-ULT)
- S64P Seat Adjuster Switch - Passenger X2 (-ULT)
- S70E Steering Wheel Controls Switch - Radio Presets (X88)
- S70F Steering Wheel Controls Switch - Radio Volume (X88)
- S70L Steering Wheel Controls Switch - Left (X88)
- S70L Steering Wheel Controls Switch - Left (Z75)
- S70L Steering Wheel Controls Switch - Left (Z88)
- S70R Steering Wheel Controls Switch - Right (X88)
- S70R Steering Wheel Controls Switch - Right (Z75)
- S70R Steering Wheel Controls Switch - Right (Z88)
- S72 Sunroof Switch
- S76 Trailer Brake Control Switch
- S77 Transfer Case Shift Control Switch
- S78 Turn Signal/Multifunction Switch X1
- S78 Turn Signal/Multifunction Switch X2
- S78 Turn Signal/Multifunction Switch X3
- S79D Window Switch - Driver
- S79LR Window Switch - Left Rear
- S79P Window Switch - Passenger (A45)
- S79P Window Switch - Passenger (-A45)
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.