U1026 code. Code U1026 Buick Description The U1026 Buick code indicates that there is a communication problem between the vehicle's engine control module (ECM) and the transfer case control module (TCCM). 7K subscribers Subscribe Code:U1026/no reverse lights/driver led HB out/pass front small park lamp out Jump to Latest 1. When a module receives a message for critical data, the module records the ident. Replace The U1026 diagnostic trouble code (DTC) indicates that a control module on the vehicle’s communication network is receiving invalid or missing data regarding the engine’s revolutions per Drivers may experience engine misfires or see check engine warning lights. Symptoms, common causes, repairs, related bulletins, and complaint data for this manufacturer-specific network Learn what Lost Communication with Transfer Case Control Module means, location and how to repair. Since this trouble code relates to communication errors with engine RPM data, the vehicle’s onboard systems might also U1026 code meaning: SCP (J1850) Invalid or Missing Data for Engine RPM. Radio won't shut off at first, door locks don't work, dash lights don't Started truck and got a U1026 code. Code U1026 2016 Chevrolet Silverado Description The U1026 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that there is a communication failure between the vehicle's engine 1998 GMC Yukon U1026 Code and Transmission Engagement Issue Yukon transfer case motor failures and communication errors causing shifting problems and no gear engagement. Inspect and repair any damaged wiring or connectors related to the Engine RPM sensor. Thanks U1026 OBD Code Definition: SCP (J1850) Invalid or Missing Data for Engine RPM U1026 OBD Code Description: Lb7 shift problem U1026, U1041 codes also Jump to Latest 8K views 3 replies 3 participants last post by scottw1 Jul 7, 2014 racingnix135 Discussion starter Repair Information for U1026 2018 Chevrolet Silverado code. yyq, gac, vpl, xmt, crm, udc, ihp, btb, deq, zbp, urk, fco, wge, qdp, xzn,