Paccar Q21-1055-1-100 CECU Cab Control Module – 2008 Peterbilt | Used 4B 5" extended / 16

5" extended / 16

Representative platforms include Kenworth T660 / T800 / W900

F-350 Powerstroke (1994

Baldwin RS4564

Caterpillar 725 / 730 articulated trucks

Paccar Q21-1055-1-100 CECU Cab Control Module – 2008 Peterbilt | Used 4B 5" extended / 16Used genuine PACCAR Q21 1055 1 100 Cab Electronic Control Unit (CECU) in serviceable condition, pulled from a 2008 Peterbilt. The CECU is the central body controller for late 2000s era Kenworth and Peterbilt trucks it bridges dash cluster, body lighting, HVAC controls, multiplexed switches, and the J1939 J1587 data buses inside the cab. Signs of a Failing CECU Multiple unrelated cab faults appearing simultaneously Intermittent or total loss of dash