By and large #WestNorse preserves more of #ProtoGermanic than #EastNorse. An exception is the verbal stem gā/*ga- ’go’, which in #OldSwedish was used in the present tense and at times in the infinitive. Else its inflection was suppleted by forms of the verb ”ganga”.
In West Norse ”gá” is attested very sparsely indeed, and instead ”ganga” is used throughout the paradigm.
In past research there was an idea that gā could have been borrowed from #LowGerman, but today this is not deemed probable.