Anton De Pasquale will keep his Race 18 podium following a post-race investigation into his pit stop.
De Pasquale followed home Chaz Mostert in the Merlin Darwin Triple Crown finale.
The Shell V-Power Racing Team driver made his compulsory pit stop on lap 19.
De Pasquale appeared to run over the rattle gun cable.
It was investigated after the race, but De Pasquale and his team were cleared of a breach.
De Pasquale and the team have avoided penalty, with no docking of points or fines handed out.
The stewards’ statement reads: "Following the Race the DRD conducted an investigation into a report from that the left rear wheel of Car 11, Anton de Pasquale, ran over a Rattle Gun whilst leaving the Pit Box following its Pit Stop.
"The DRD heard from the Authorised Representative of Racing Team (Aust) Pty Ltd who tendered footage from the Pit Boom camera and data from the MoTeC rear shock absorber of Car 11.
"The DRD also reviewed Broadcast footage of the alleged Incident.
"The Authorised Representative of Racing Team (Aust) Pty Ltd maintained that the Pit Boom camera footage, in conjunction with the Broadcast vision and the data from MoTeC, did not establish that the rear left wheel of Car 11 rolled or passed over the Rattle Gun.
"The DRD determined that the evidence could not substantiate that a breach of the Rules had been committed in this instance."
The outcome ensures the Shell V-Power Racing Team retains the teams' championship lead it claimed on Sunday.
It came after Shane van Gisbergen finished 21st following an incident with De Pasquale's teammate Will Davison.
Van Gisbergen clashed with Davison after a late restart, and earned a 15-second time penalty.
De Pasquale is a reduced 214 points behind van Gisbergen heading to Townsville.