the crow and i Posted February 1, 2019 Report Share Posted February 1, 2019 Hi All I need to have a GVM upgrade on a Silverado 2500 HD any ideas on where I can have this happen? Bryan Quote Link to comment Share on other sites More sharing options...
Merv and Di Posted February 2, 2019 Report Share Posted February 2, 2019 Why not simply put a set of duallies under the rear and take to an auto engineer to have increased. There is nothing else done between the 2500 and the 3500 maybe slightly heavier rear springs. Your 2500 can tow 4.5 t on the ball and 7.5t 5th wheeler. Don't forget a light truck endorsement will be required for vehicles over 4.5t. From memory the 2500 comes in at 4536kgs unless you have had it derated Cheers Merv Quote Link to comment Share on other sites More sharing options...
the crow and i Posted February 2, 2019 Author Report Share Posted February 2, 2019 G'day Merv The endorsement shouldn't be a problem locating an engineer may be. Thanks Bryan Quote Link to comment Share on other sites More sharing options...
Laurie and Helen Posted February 9, 2019 Report Share Posted February 9, 2019 Bryan, To upgrade to 4495kg GVM on a 2500, you need to bring the rear springs to 3500 specifications. This requires the addition of 3 extra leaves per set. The LS11 certification, can than be carried out by a qualified mechanical engineer in Queensland. I did all the work myself, and had the springs upgraded at a local spring works, than refitted them. (they are heavy) I already had airbags fitted. When the upgraded springs were fitted I also needed to install a 25mm spacer for the air bags. The certification for mine was carried out before the latest government saga's but should still be able to be carried out, you also need to ensure your brakes are up to standard as the vehicle is put through a rigorous series of brake tests as part of the upgrade process. Some information attached, I used for the engineer to confirm my research. You need the specifications of the 3500 spring pack (attached), when you get the 3 new leaves installed they need to reset the springs to the 3500 specifications. Hope this helps. cheers Replacement Leaf Springs for the 2006 Chevrolet Silverado 3500.webarchive Quote Link to comment Share on other sites More sharing options...
the crow and i Posted March 14, 2019 Author Report Share Posted March 14, 2019 Hi Laurie I can't open the attached Replacement Leaf Springs for the 2006 Chevrolet Silverado 3500.webarchive Bryan Quote Link to comment Share on other sites More sharing options...
jturner Posted February 1, 2022 Report Share Posted February 1, 2022 does anyone know where you can get a GVM upgrade done for a 2021 1500 Silverado in Melbourne?? Quote Link to comment Share on other sites More sharing options...
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