Moderator, please move to appropriate area, if needed. I couldn't figure out which would be best to reach those most in need of the following info. Thanks.
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Anyone having to replace their fuel regulator or fuel injector in the 4.3l Vin-W ("Spider") engine, GM wants a HEFTY $106 (pre-tax) pocket-lining for the "Fuel Line Nut Kit".

Advance Auto Parts (and many others I'm sure) sells the Dorman Brand "CMFI Fuel Return Lines" kit (OEM Part # 55163) under the "HELP!" packaging for $55. It includes BOTH the Return AND Supply lines, as well as the bracket and screw to mount it.

Take my word for it, your's are probably dry-rotted! I tried the junkyard, and even on a 50K mile truck, I saw that the lines were rotted (hard, thin-walled, and stiff) and the regulator was going (or already gone, though the engine was marked as "good").

Just wanted to share, as this seems to be a regular issue with these trucks, and when trying to disconnect mine from the Spider, one simply snapped in two.

Happy motoring!

 

*Moved as requested*

Thanks for the info, I'm sure some people will be happy about saving a couple bucks.

 

rockauto selling the lines and hardware for 35 dollars plus shipping and handling.