Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
There is a factory service bulletin for the following Buick Models:
2001-2005 Buick LeSabre
2001-2005 Buick Park Avenue
2002-2007 Buick Rendezvous
2002-2007 Buick Rendezvous AWD
2005-2007 Buick Terraza
2005-2007 Buick Terraza EXT
2005-2007 Buick Terraza 4WD
2005-2008 Buick Allure (Canada Only)
2005-2008 Buick LaCrosse
2006-2008 Buick Lucerne
Buick Factory Service Bulletin OBDII Code P0757
To diagnose the P0757 Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The transmission fluid pressure switch, also known as the pressure switch manifold, is a multiple switch assembly made up of 3 normally open pressure switches and 1 normally closed pressure switch. Pressure switch 1 monitor shift valve 1 positioning, pressure switch 2 monitors shift valve 2 positionings, and pressure switch 3 monitors shift valve 3 positionings. The normally open pressure switches 1–3 communicate the positioning to the transmission control module (TCM). The position of shift valves 1–3 is controlled by 3 normally closed shift solenoid valves. When energized, the shift solenoid valves directly control the main pressure to shift valve 1, 2, or 3, which strokes the shift valve. When the valve is stroked, an exhaust passage is blocked and fluid pressure to the pressure switch increases. The Diagnostic Trouble Code (DTC) will be set if the shift solenoid 2 is commanded off and pressure switch 2 remains on for 6–10 s, depending on the transmission fluid temperature.
Need more information on how to fix the P0757 Buick code? Get Access to Factory Service Manuals
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