
VMAC – Vehicle Mounted Air Compressors
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Installation Manual for VMAC
System V900127
2012 - 2015 GM 2500-3500 Pickup, Crew Cab
6.0L Vortec Gas
General Information..................................................................... 4
Before You Start....................................................................... 4
Part 1: Warranty and System ID................................................. 5
Part 2: Preparing for Installation................................................ 7
2.1 Preparing for Installation .................................................... 7
Part 3: Installing the Control Components ............................... 11
3.1 Installing the Components.................................................. 12
3.2 Connecting the In-Cab Wiring............................................ 12
3.3 Connecting the Under-Hood Wiring ................................... 13
Part 4: Installing the Tank and Hoses........................................ 16
4.1 Installing the Tank and Brackets........................................ 16
4.2 Installing the Tank Assembly.............................................. 18
Part 5: Installing the Cooler, Bracket and Compressor........... 21
5.1 Installing the Crank Pulley.................................................. 21
5.2 Modifying the Radiator Hoses............................................ 23
5.3 Installing the Cooler............................................................ 24
5.4 Installing the Hoses............................................................ 25
5.5 Installing the Main Bracket and Compressor ..................... 26
5.6 Connecting the Hoses........................................................ 29
5.7 Completing the Installation................................................. 30
Part 6: Adding Oil to the System............................................... 31
Part 7: Finishing the Installation................................................ 32
7.1 Connecting to Switched Power 2012 - 2013...................... 32
7.2 Connecting Switched Power 2014 - 2015.......................... 33
7.3 Securing the Wiring............................................................ 39
Part 8 Completing and Testing the Installation........................ 40
Safety Test ............................................................................... 40
Part 9: Finishing the Installation................................................ 41
9.1 Before Starting the Engine Checklist.................................. 41
9.2 After Starting the Engine Checklist .................................... 41
9.3 Final Testing....................................................................... 42
Part 10: Setup, Performance Testing and Adjustments......... 43
Part 11: Optional Accessory Installation ................................. 44
Part 12: Auxiliary Air Receiver ................................................... 45
Part 13: Accessory Products...................................................... 46