ATP Automatic Transmission Pressure Switch Manifold

The ATP Automatic Transmission Pressure Switch Manifold (also called a transmission pressure switch assembly or PSM) is a multi-switch assembly that helps your automatic transmission report which gear range it is operating in. It is built by ATP (Automatic Transmission Parts Inc.) as a replacement part for the transmission's electronic control system.

How It Works:

• Combines several pressure switches in one manifold assembly.
• Directs fluid pressure to the switches according to the position of the gear selector and the manual valve.
• Fluid pressure sets the digital logic at the manifold's electrical pins.
• The Powertrain Control Module (PCM) or Transmission Control Module (TCM) reads that logic to determine the current gear range.

Why It Matters:

• Gives the control module accurate gear range data, which supports proper shift control.
• A worn or failing pressure switch manifold can cause shifting problems or transmission-related warning lights. Replacing it restores correct signaling.
• Many ATP part numbers cross-reference to original equipment (OE) numbers, so you can find the right replacement for your transmission.

ATP supplies a broad range of transmission parts and other aftermarket components. This pressure switch manifold line is a dependable choice for repairing or maintaining an automatic transmission.