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 141 (ENGINE CONTROLS AND FUEL - 6.0L (L96) - DIAGNOSTIC INFORMATION AND PROCEDURES (DTC P0010 TO DTC P0341))DIAGNOSTIC INFORMATION AND PROCEDURESDTC P018B-P018D (CHASSIS CONTROL MODULE)CIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Circuit/System Verification
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2019 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On / Vehicle - In Service Mode
- Verify the scan tool parameter: Fuel Pressure = 345 to 650 kPa (50 to 94 PSI)
- If not between 345 and 650 kPa (50 and 94 PSI)
Refer to: Circuit/System Testing
- Go to next step: If between 345 and 650 kPa (50 and 94 PSI)
- If not between 345 and 650 kPa (50 and 94 PSI)
- Increase/Decrease - Engine Speed/Throttle
Verify the scan tool parameter: Fuel Pressure = 345 to 650 kPa (50 to 94 PSI) & Varies
- If the value does not change
Refer to: Circuit/System Testing
- Go to next step: If the value changes
- If the value does not change
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC sets
- All OK.
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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.