12
13
Turn ignition ON, look and confirm that the OnStar Dash light is turned OFF.
If the light is still ON continue with step 3, if it is OFF continue and install DiabloSport tune.
Step 3
Turn ignition OFF!
Locate the fuse panel located on the driver’s side dashboard, carefully remove cover
and locate the following fuses:
SEO IGN
(Special Equipment Option Power)
RAP 2
(Retained Accessory Power Relay)
RDO 1
(Audio System)
Location may vary from illustration, consult your user manual.
Carefully remove each fuse with the ignition OFF.
Turn ignition ON, look and confirm that the OnStar Dash light is turned OFF.
Continue and install DiabloSport tune.
Vehicles equipped with the GM OnStar system - Step 2 - 3
Vehicles equipped with the GM OnStar system