The 40-year-old was buried on Monday, following a full fire brigade funeral at Teesside Crematorium.
The dad-of-three, who died on July 9, was carried to the service aboard a hydraulic platform vehicle, flanked by colleagues in full ceremonial dress - white gloves and belts.
Friends and family tributes referred to the "man about town" and the "firefighter with the heart of gold who learned French in six weeks."
Gary was said to be a fitness enthusiast who worked out at the gym daily.
He leaves dad Norman, 63, and three children, including six-month-old daughter Ava to his partner Nicola, and sons Dayle, 19, and Jordan, 18, and brothers Glenn, 38 and Stephen, 28.
After the funeral service tributes were posted on gazettelive.co.uk including: Lawradarling who wrote: "Gary, the world has lost a great lad, you will never be forgotten and you will be sadly missed. You will live on through Dayle, Jordan & Ava. RIP xx" Lazybones said: "Such a tragedy, loss of life at such a young age. Rest In Peace."
Rickystoe wrote: "Goodnight God bless mate, especially the pearlies, great to see so many friends."
Borodaft wrote: "You will be sadly missed. Rest in peace pal. Kev M."
Mags1 wrote: "RIP Gary, you will never be forgotten. All i can say is God must have needed you more xx."
JHN wrote: "I didn't know you Gary but you are sat with God and surrounded with angels. RIP."
TRIBUTES: Flowers at the funeral of Gary Auckland, above