AUTO SPRING KITS
Chevy/GMC 

REAR ADD-A-LEAF INSTALLATION INSTRUCTIONS
                                  
2007-2014 CHEVY/GMC 1500 2WD OR 4WD

TOOLS REQUIRED                  www.autospringcorp.com                                                               

								TECH SUPPORT CONTACT
FLOOR JACK								
JACK STANDS						   1-800-345-0431
METRIC AND US SOCKETS				      ADDRESS	        
TORQUE WRENCH						8007 MOSSY CUP ST	      
                                       BOISE,IDAHO 83709      
1.   Before beginning, read the instructions completely.
2.   Jack up the rear of the vehicle enough to lift the rear tires off the ground and support frame with jack stands
3.   Remove the rear tires.
4.   Place floor jack under rear axle housing and support rear-end.
5.   Remove factory u-bolts and lower shock bolt on one side only.
6.   Lower the rear end housing with floor jack to allow the spring to separate from the axle spring seat. 
7.   Lower the rear end  6-8 inches between the spring  and axle seat to allow install of the add-a-leaf.Remove the factory lift block and set aside for now.
8.    Using a vise grip on the lower head of the centerbolt and socket on the nut remove spring center bolt and discard
9.    Insert the new center bolt provided thru factory tapered overload leaf. Install the add-a-leaf next thru the centerbolt
10.  Clamp the add-a-leaf and tapered overload leaf up to the main spring pack and tighten the centerbolt to 35 ft lbs.  Reinstall the factory lift block.
11.    Jack rear end up enough to allow the spring centerbolt heads to fit in block centering holes.
12.   Install factory u-bolts provided and torque nuts to 125 ft. lbs.  Reinstall lower shock bolt and torque to 85 ft lbs.
13.   Repeat install procedure on opposite side.  You can leave the extra threads sticking above the centerbolts or cut them off flush with the nut.  Owner preference.
14.   Re-install rear tires and tighten lug nuts and carefully lower the vehicle to the ground.
15.   Re-torque the lug nuts to factory OEM specs.

	Re-torque all nuts after 300 miles