Hi-looking for a service manual for my dishwasher–looks like I may need to install an impeller kit. BTW, thanks for the great website-have ordered several parts for my dishwasher from you, and the online advice has been indispensible. Cheers, Fugue
Do not have one specific to a GU2300 but the following should be close.
Whirlpool KD-12 Point Voyager Dishwasher Service Manual - ApplianceDigest.com
You will have to join the site to download the manual but it is free and has lots of info for the appliance DITer.