Owners manual

Chevrolet 73 to 87, 73 to 92 4-door (GMC) (34” Straight, with Inside Shock Absorbers)
CAUTION!
Read pages 2-3 of these instructions before starting installation. Failure to do so could result in significant vehicle damage!
CAUTION!
Check for obstructions before drilling. Failure to do so could result in damaged fuel or brake lines, structural members, etc.
CURT MANUFACTURING does its best to communicate tow vehicle manufacturer changes; however, it is ultimately the
responsibility of the installer to prevent damage due to installation.
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Front of
Vehicle
Measure from rear
edge of truck bed to
rear edge of mounting
rail
Rear Edge of
Truck Bed
34 7/8" Long Box
and Short Box
Axle Center
Bed Sill
King Pin Center approximately
3 1/2" forward of Axle Center
Mounting Channel
Long bracket Short bracket
DO NOT Torque to 85 lb-ft
(tighten but do not crush bed sill)
Drivers side of 1/2 ton Chevy Shown
* Optional weld pattern
.25
2
.25 2
*
.25 1.5-3
.25 2
*
8
Each mounting rail must have
a bolt in either of the marked
center holes. Check for
obstructions before drilling.
Front of
Vehicle