Let $G$ be a profinite group.
Let $K(G,\mathbb Z_\ell)$ be the Grothendieck group of the category of $\mathbb Z_\ell$-modules with continuous $G$-action.
Let $K(G,\mathbb F_\ell)$ be the Grothendieck group of the category of $\mathbb F_\ell$-modules with continuous $G$-action.
The map $T\mapsto T\otimes_{\mathbb Z_\ell}\mathbb F_\ell$ defines a group homomorphism $K(G,\mathbb Z_\ell)\to K(G,\mathbb F_\ell)$ (called the reduction map).
Question: If $T$ is a $\mathbb Z_\ell$-modules with continuous $G$-action such that $T$ is killed by some power of $\ell$, do we have $T\otimes_{\mathbb Z_\ell}\mathbb F_\ell=0$ in $K(G,\mathbb F_\ell)$?