1977 GMC Pickup Fuel Line Diagram

1977 GMC
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MINDSET12000
  • MEMBER
  • 1 POST
i have a dual tank system and the spare tank is disconnected.. and the main tank lines are all rigged weird. i cant find a diagram for the fuel lines and i need to figure out how there set up so i may repair the lines
Jul 30, 2006 at 3:50 PM
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MICKEY-D
  • ✓Experienced Mechanic
  • 304 POSTS
You should be able to get a diagram from a dealer. or check repair manuals for one. You could probably Google "diagram for dual tank fuel line on GMC truck(add the year), you should come up with some answers.
Jan 8, 2010 at 7:59 AM
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Suggested Repair

Obtain a dual-tank fuel line diagram from a GMC dealer, a repair manual, or an online search for a 1977 GMC pickup, then restore the lines to the factory routing.

Conversation Summary

The owner of a 1977 GMC pickup has a dual-tank system with the spare tank disconnected and the main tank fuel lines routed unusually. They need a fuel line diagram so the lines can be repaired. The expert advised getting a diagram from a dealer or repair manual, or searching online for a dual-tank fuel line diagram for that year GMC truck.

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