gm qd fuel lines

Looking for correct dimensions/number for O ring seals for quick disconnect fuel lines. Fuel inlet pipe connector and tank return connector (94 Ciera, 3.1 fi) leaking, no soft seals installed. Dealer states they only catalog complete pipe assy w/seal; local parts outlet has no idea.

Hoping these qd connectors aren't a press fit which would require new fittings.

Regards,

Gritty (from working under the hood)