Live Data
Last reported case: 7 years ago
Based on 3 owner reports, 3 from forums)
🚗U0073 on 2020 CHEVROLET Sonic
This page focuses specifically on U0073 issues reported by 2020 CHEVROLET Sonic owners. The experiences and fixes below are from real owners of this exact vehicle.
Symptoms Reported by 2020 CHEVROLET Sonic Owners:
intermittent problems
Parts Often Involved:
wiring harnessconnectortransmission control moduleecm harnesstcm harnessthrottle bodywiringengine control module
What Owners Say
Real experiences from 2020 CHEVROLET Sonic owners
Experiencevia forum_reply
“Any suggestions on what to check? U0101 - Faulty Transmission Control Module (TCM) - TCM harness is open or shorted - TCM circuit poor electrical connection U0100 - Faulty Engine Control Module (ECM) - ECM harness is open or shorted - ECM circuit poor electrical connection U0073 Control Module Communication Bus OFF I'm having the same codes after cleaning of the throttle body.”View original
Experiencevia forum_reply
“Any suggestions on what to check? U0101 - Faulty Transmission Control Module (TCM) - TCM harness is open or shorted - TCM circuit poor electrical connection U0100 - Faulty Engine Control Module (ECM) - ECM harness is open or shorted - ECM circuit poor electrical connection U0073 Control Module Communication Bus OFF I have the same problem with my chevy sonic and I took it in and my check engine light went off and everything to appear normal again but the codes were still in my computer.”View original
Experiencevia forum_post
“Any suggestions on what to check? U0101 - Faulty Transmission Control Module (TCM) - TCM harness is open or shorted - TCM circuit poor electrical connection U0100 - Faulty Engine Control Module (ECM) - ECM harness is open or shorted - ECM circuit poor electrical connection U0073 Control Module Communication Bus OFF”View original
Experiencevia forum_reply
“I have contact NHTSA to tell them because I have been having intermittent problems so if your having the same issue it's a safety issue report it in to the NHTSA maybe it could be a recall later”View original
Experiencevia forum_post
“U0101 - Faulty Transmission Control Module (TCM) - TCM harness is open or shorted - TCM circuit poor electrical connection U0100 - Faulty Engine Control Module (ECM) - ECM harness is open or shorted - ECM circuit poor electrical connection U0073 Control Module Communication Bus OFF”View original
Experiencevia forum_reply
“U0101 - Faulty Transmission Control Module (TCM) - TCM harness is open or shorted - TCM circuit poor electrical connection U0100 - Faulty Engine Control Module (ECM) - ECM harness is open or shorted - ECM circuit poor electrical connection U0073 Control Module Communication Bus OFF I'm having the same codes after cleaning of the throttle body.”View original
These are real experiences shared by 2020 CHEVROLET Sonic owners on automotive forums and communities. Results may vary based on vehicle condition and repair quality.
About This Data
This page aggregates 3 discussions about U0073 from 2020 CHEVROLET Sonic owners across automotive communities.
Success rate (0%) is calculated from posts where owners confirmed whether their fix resolved the issue.
Last updated: 8/17/2018