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 MANUALSBUICK2000PARK AVENUE BASE, 3.8 1REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - TESTING & ENGINE COMPONENT TESTINGMISCELLANEOUS CONTROLSTRANSMISSIONTORQUE CONVERTER LOCK-UP SIGNAL AT TRANSMISSION
2000 Buick Park Avenue Base, 3.8 1
Torque Converter Lock-Up Signal At Transmission
2000 Buick Park Avenue Base, 3.8 1SECTION Torque Converter Lock-Up Signal At Transmission
- Warm engine to operating temperature. Raise vehicle and support drive wheels. Support suspension where necessary to prevent damage to drive axles.
- Disconnect torque converter clutch harness connector at transmission. Connect a test light between appropriate torque converter clutch harness connector terminals. Start engine and place transmission in Drive. Accelerate vehicle to 45 MPH and note test light.
- If test light does not illuminate, check for open or short to ground in solenoid power supply circuit of torque converter clutch harness connector. Also, check for open in ground circuit between torque converter clutch harness connector and PCM. If circuit is okay, see TORQUE CONVERTER LOCK-UP SIGNAL FROM PCM .
RENDER: 1.0x
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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.