C-2546
ARNOTT COIL SPRING CONVERSION KIT
w/EBM
FOR 2007-2013
VARIOUS LONG WHEELBASE GM SUVs
The air suspension system is under pressure (up to 10 bar, or 150 lbf/in). Verify pressure has been relieved and disconnect power to the air suspension system prior to disassembly. Do not allow dirt or grease to enter the system. Always wear standard hand, ear, and eye protection when servicing the air suspension system.
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Not to be stored below 5°F (-15°C) or above 122°F (50°C).
Avoid damage to air lines and cables.
Removal and installation is only to be performed by fully qualified personnel.
Use car manufacturer’s diagnostic software.
Damage to the vehicle and air suspension system can be incurred if work is carried out in a manner other than specified
in the instructions or in a different sequence.
To avoid the possibility of short circuits while working with electric components consult your owner's manual on how to
disconnect your battery.
Consult your vehicle owner's manual, service manual, or car dealer for the correct jacking points on your vehicle and for
additional care, safety and maintenance instructions. Under no circumstances should any work be completed underneath
the vehicle if it is not adequately supported, as serious injuries and death can occur.
Refer to FIGURE 10-1 shock absorber assembly for part location/identification.
1. Safely raise and support the vehicle.
2. Remove the front wheel.
3. Unplug the shock sensor connector at the top of the shock.
4. Disassemble the front shock/coil spring according to the manufacturer’s procedures.
5. Remove the OEM spring seat from the original shock absorber (will be re-used).
Tighten all nuts and bolts to manufacturer's specifications during the installation process.
6. Install the OEM spring seat (make sure that the flanged end of the spring seat is down (FIGURE 20-1) and bump stop cap onto the new shock absorber.
7. Install OEM coil spring and all OEM upper mount parts including bump stop and upper spring hat in their original positions.
8. Install new bolts on lower T-bar mount, re-using the factory hardware. Tighten to manufactures specifications.
9. Re-install front tire(s). Torque front wheels to manufactures specifications.
10. Check and adjust vehicle front-end alignment after installation.
11. Installation complete.
SHOCK SENSOR INSTALLATION
1. Locate the damping sensor lead.
2. Disconnect the angle adapter that connected the shock to the sensor lead.
3. Connect the supplied coil as shown in FIGURES 30-1, 30-2.
4. Secure the coil and harness in a way not to interfere with any moving parts or components with excessive heat.
REAR AIR SHOCK/COIL SPRING REMOVAL
1. Set steering to straight.
3. Remove the rear wheels. (FIGURE 40-1)
4. Locate and remove the air lines to deflate the air shocks. Turn the metal clip aprox. 90° to remove the air line fitting from the air shock. (FIGURE 40-2)
5. Locate and remove the electrical connectors from the top of the air shocks. (FIGURE 40-3)
6. Loosen and remove the upper and lower shock mounting nuts. (FIGURES 40-4, 40-5)
7. Support the axle to relieve pressure from the air shocks mounting points. Remove the upper and lower air shock mounting bolts. (FIGURE 40-6)
8. Remove the air shocks from the vehicle. (FIGURE 40-7)
9. Remove the bolts and ride height sensors from the upper control arms. (FIGURES 40-8, 40-9)
10. Remove the bolt and bracket holding the brake line to the rear differential. (FIGURES 40-10, 40-11)
11. Remove the nuts on the upper sway bar end links. (FIGURE 40-12)
12. Using a jack or other suitable device, support the axle to release pressure from the sway bar end links. Remove the sway bar end link bolts. (FIGURES 40-13, 40-14)
13. Slowly lower the axle and remove the coil springs. (FIGURE 40-15)
REAR COIL SPRING INSTALLATION
Tighten all nuts and bolts to manufacturer's specifications during the installation process.
1. Install the rear coil conversion in the reverse order of removal.
Secure the air lines and electrical connectors in suitable locations as they are not used for this kit.
ELECTRONIC BYPASS MODULE INSTALLATION
1. Locate and remove the spare tire under the rear of the truck.
2. Locate suspension module above spare tire corner bracket. Release clip attaching wire harness to module. (FIGURES 50-1, 50-2)
3. Once wire harness clip is removed, unplug harness. Allow wire harness plug to hang down. (FIGURES 50-3, 50-4)
4. Locate red w/black stripe, solid black, solid tan, tan w/ black stripe. Cut each wire about 2 inches back from the plug. Strip all 4 wires on the wire harness side. (not the plug side). (FIGURES 50-5, 50-6, 50-7)
5. Using the wiring diagram, match up the wires and connect them together with the butt connectors. (FIGURE 50-8)
EBM SIDE
FROM
TO
WIRING HARNESS SIDE
BLUE
TAN/BLACK STRIPE
RED
RED/BLACK STRIPE
GREEN
TAN
BLACK
BLACK
6. Once all the wires have been connected you will need to secure the EBM to the wire harness as shown. (FIGURE 50-9)
7. Locate the fuse box under the hood. (FIGURE 50-10)
8. Replace the 30 AMP fuse with a 5 AMP fuse. (FIGURES 50-11, 50-12)
9. Replace spare tire. Installation complete.