Question about 2003 Chevrolet Monte Carlo

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Monte carlo 2003 diagnostis code mean po742, p1189c, p1811c on my chevy

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DTC P0742 is usually caused by a hydraulic or internal transmission concern. The TCC release switch is a normally-closed switch and anything that can cause it to stick open will cause this code:
1.- Inspect theTFP manual valve position switch.
2.- Inspect the TCC release switch for the following conditions:
- A damaged or leaking seal
- Sediment or debris
- Damaged switch contacts
- Stuck switch contacts
or
- TCC control valve stuck
- TCC feed limit valve stuck
- TCC regulator apply valve stuck
- TCC PWM solenoid valve stuck
- Pressure regulator valve stuck


DTC P1189 Engine Oil Pressure Switch Circuit -
This code, usually indicates an open in the circuit usually the oil pressure switch near the oil filter. This code will not cause a drivabity problem and will not turn on the service engine soon light.

DTC P1811 Maximum Adapt And Long Shift - Is for max adapt or long shift which is a code for the length of time it takes the transmission to shift. The code P1811 is typically a Pressure control solenoid in the transmission. There are several bulletins for replacing the pressure control solenoid in the transmission. Check this info in the next LINK: 2000-Century-P1811-Chart


Hope helps.

Posted on Sep 07, 2010

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