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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.3 T, 4L60E/M30REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1382 (AUTOMATIC TRANSMISSION - 6L50/6L80/6L90 - DTC P0976 TO DTC P2764)DTC P2723 OR P2724CIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30
Circuit/System Testing
2006 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.3 T, 4L60E/M30SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Perform the Line Pressure Check
.
- If the pressure is out of specification, correct this concern first.
- Perform the Control Solenoid Valve and Transmission Control Module Assembly Cleaning
and retest the DTC as outlined in the Circuit/System Verification steps.
- If the DTC resets, continue on with testing.
- Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection
.
- If a concern is found, repair or replace the control solenoid (w/body and TCM) valve assembly.
- Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test
.
- If the solenoid is found to be leaking or stuck closed, replace the control solenoid (w/body and TCM) valve assembly.
- Inspect the control valve upper body assembly for sticking valves, damage, scored bores, or debris.
- If a concern if found in the valve body, repair or replace the valve body as necessary.
- Inspect the 1-2-3-4 clutch assembly for damage.
- If a concern is found in the 1-2-3-4 clutch assembly, repair or replace as necessary.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.