I am in need of the vacuum hose diagram for my truck to make sure everything is correct. Is there a way to get this for free?
Nov 30, 2025 at 6:34 PM
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STEVE W.
✓ASE Certified Mechanic
15,171 POSTS
These diagrams should cover whichever variant you have. First image is the cruise, second image is the heater system, Then there are the four versions for the engine, First of those is the base 351 under 8500 GVW, then the 351 under 8500 GVW high altitude, next is the over 8500 GVW and last is the over 8500 GVW with special calibration for heavy duty. You should be able to determine which version you have if you look at the tag under the hood and the GVW tag on the door. You should also see the photo ID if you mouse over the images.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.