Hard shifting or stuck in gear The air module isn't properly directing air to shift actuators (range/splitter)
A severely cracked or warped cylinder head may prevent the engine from building enough pressure to start
6L V8 - Gas 2024 Chevrolet Express 3500 Base
PRI Delivery Opening Pressure: 103 PSI
or failing coil winding Voltage at pin 30 but nothing at pin 87 when triggered Internal switching failure
4008500720 | Genuine Wabco ABS / PABS ECU Module Quick Release Valve Hard shifting or stuck inPart Number: 4008500720 Condition: New Manufacture Brand: Wabco Description: An ABS PABS ECU is the electronic control unit (ECU) that manages the Anti lock Braking System (ABS) or in some cases, a Partially Automated Braking System (PABS) in vehicles, especially trucks, trailers, and buses. ABS PABS ECU Module E4F 4S4M, 12V Fits For heavy commercial medium duty trucks, including Freightliner, Volvo, Mack and other OEMs that use WABCO ABS systems.