extra ground wire
 

new guy here , 2007 vue 2.2l . Has anybody found it beneficial to add an extra ground wire on the ecm case? i read in another place the ground was not very good causing ecm to produce false codes. Thanks

If the body ground isn't good it should be fixed rather than just doing the one module.
Are you having problems?

ground wire
 

Thank you for you're suggestion. I had some DTC codes that came up that i addressed,then cleared codes and have about 90 miles of various driving conditions . I believe i've got problem corrected hopefully ! Evap canister vent valve stuck . Replaced vent valve and put on a new purge valve as well . thanks again

What were the code(s) that led you to replace the valves in the EVAP?

grcauto8453
i pulled a code P0455 . i figured gas cap , replaced w/GM cap and after 28 miles check engine light on again . I then got underneath car and checked evap canister for wires chewed or plumbing to canister broken . everything looked intact . I couldn't see the canister vent valve just the wires leading to it .I very carefully removed the three
nuts securing canister since they were rusted up it took quite a bit to get them off without breaking the studs ! Removed the vent valve and found it stuck in open position ! Replaced valve with new GM valve , cleared code and now i'm at 90 miles with no check engine light ! (knock on wood)

You did good. Unless you had more than one leak you fixed it.