Download link for the GMC 3500: http://www.lcpdfr.com/files/file/3037-gmc-3500-caltrans/

Credits
Rapid Towing Mechanic Paintjob by Carrythxd
Screenshots by Carrythxd
GMC 3500 by Chippy

Vehicle Credits
- Model is by unknown, converted by Policefanatic
- Wheels by Lt.Caine
- Whelen Edge By Bxbugs123, edited to Mini Edge by Chippy.
- Template by Chippy.
- Skin by Chippy
- Any remaining credit goes to the respective owners.

HANDLING
3500.0 9.0 85 0.0 0.0 -0.18 0.0 5 0.18 1.0 125.0 0.20 0.65 0.5 35.0 1.10 0.85 16.0 0.15 0.48 1.5 0.7 0.7 0.15 -0.20 0.0 0.45 1.0 1.0 0.8 1.5 0.0 25000 440080 0 0
(Handling from GTA IV's Bobcat, edited by Carrythxd)