Locking Hubs and Axles
Brake & Front End
SEPTEMBER 28, 2023
On 2013 and newer trucks, the solenoid was moved next to the brake booster on the driver’s side. There are updates to the software for the TCCM that changes how the solenoid controls the IWEs. Also, try at least two key cycles and observe how the IWEs perform. Quick Test for System Vacuum Open the hood and find the IWE solenoid.
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