
19 GALLON
STEP: READ THESE INSTRUCTIONS CAREFULLY!
- Jack rear of truck and support the axle with jack stands.
- Remove the bed of the truck.
- Locate the spare tire crossmember. This is the narrow piece of channel held on by rivets just behind the shock
crossmember. - Remove the spare tire crossmember by drilling out the rivets and pressing the rivet out with a punch.
- Using a floor jack maneuver the new tank into position. The tank locates just behind the shock crossmember with the step down portion of the tank facing the rear of the vehicle.
- Once positioned, use large “c” clamps to hold tank in place. Drill the frame with a 3/8” drill bit using the mounting flange holes as guides.
- Position mounting straps on top of the lower portion of frame rail as seen in diagram.
- There are extra locations for fittings to be placed. Make sure to vent the tank so that vent tube sits higher than tank.
- If you have purchased a side fill tank, you will need to “C” notch the top of frame to allow for clearance of the fill.


why does this maybe not work in a 4×4 model?
We have sold them to guys with 4wd but have never installed one on a 4wd. We have one guy say it wouldn’t work but we think he did not want to remove the spare tire.
Great website I found it on Yahoo, keep up the great job.
This looks great, but let me understand correctly. It installs behind the rear axle where the spare tire is now? so that the weight would be all the way at the back, which would be great for grip etc. Also how much is one for an 86 GMC Sierra 1/2 ton 2 wheel drive? Thanks
Yes, the tank installs rearward of the rear axle. It also helps distribute the weight better and improve the ride.
Check this link out: http://www.performanceonline.com/1973-87-CHEVY-GMC-C10-C20-TRUCK-19-GALLON-ALUMINUM-FUEL-TANK-BED-FILL-AGT7387-B/
Thank you!
will you see the tank from behind when bed is put back on?
Yes, it will be seen slightly.
Can you purchase a side fill tank for a 1986 gmc sierra 1/2 ton ? and what is the cost?
Please contact us at info@performanceonline.com