GM J45722 sending unit wrench

[Anomaly]

Doing a fuel pump on my cts-v and need a GM J45722 fuel sending unit wrench. Looking to borrow ($$ or beer) or buy otherwise I'll have to take the tank to a dealer :banghead:

Thanks

[AE92_TreunoSC]

You can just use a mallet and a thick screw driver. Lots of techs will use this method even if the tool is in reach. Is it tight access in the back seat?

[Anomaly]

I tried using a brass punch and hammer but I can't get much movement on the ring, and started damaging it. I was tempted to do an access panel in the back seat but I dropped the tank :)

[Anomaly]

One last try...