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 MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1353 (HYBRID ENGINE CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P0A2FCIRCUIT/SYSTEM TESTING
2006 Chevrolet Suburban K2500, 6.0 U
Circuit/System Testing
2006 Chevrolet Suburban K2500, 6.0 USECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- Review the Failure Records when the DTC set.
- Compare the MTS values for each drive motor generator.
- If both MTS values were not at or near 200°C (392°F), test the MTS signal circuit for a low resistance to ground condition.
- If the circuit tests normal, replace the drive motor generator.
- Inspect the transmission cooling system for restrictions or damage.
- If a concern is found, repair or replace the restricted or damaged components as necessary.
- Perform the Transmission Fluid Cooler Flushing and Flow Test
.
- If a concern is found, repair or replace the damaged components as necessary.
- Perform the automatic transmission Line Pressure Check
.
- If a concern is found repair or replace the damaged components as necessary.
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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.