we are recently observing this issue with the tiller timing out every 30 seconds with below error for helm init/upgrade/install commands. Although other commands such as helm init and helm list works fine. i have even tried removing the --wait option as well but that does not appear to be the issue:

I have tried rebooting the nodes, upgrading the GKE version to the latest, rebooting tiller pod and increasing the time in the timeout option, trying the command without timeout option as well.

[tiller] 2019/06/23 15:18:57 warning: Upgrade "xx" failed: 
Failed to recreate resource: Timeout: 
request did not complete within requested timeout 30s 
&& Failed to recreate resource: Timeout: 
request did not complete within requested timeout 30s

Output of helm version:

Client: &version.Version{SemVer:"v2.13.0", GitCommit:"79d07943b03aea2b76c12644b4b54733bc5958d6", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.13.0", GitCommit:"79d07943b03aea2b76c12644b4b54733bc5958d6", GitTreeState:"clean"}

Output of kubectl version:

Client Version: version.Info{Major:"1", Minor:"11", GitVersion:"v1.11.2", GitCommit:"bb9ffb1654d4a729bb4cec18ff088eacc153c239", GitTreeState:"clean", BuildDate:"2018-08-07T23:17:28Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"13+", GitVersion:"v1.13.6-gke.13", GitCommit:"fcbc1d20b6bca1936c0317743055ac75aef608ce", GitTreeState:"clean", BuildDate:"2019-06-19T20:50:07Z", GoVersion:"go1.11.5b4", Compiler:"gc", Platform:"linux/amd64"}

Cloud Provider/Platform (AKS, GKE, Minikube etc.):

GKE