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The number 1 complaint (although it is a very tight race with the AFM and condenser issues) I have with my truck is the worthless undercoating that General Motors puts on their Chevy and GMC trucks. It is a wax based undercoating that quickly hardens and flakes off of the frame. You can look under brand new Silverados and Sierras sitting on dealer lots and already see rust starting to form where the wax did not adhere well. This is particularly frustrating for vehicles, such as mine, that call the rust belt home. It has received enough notice and generated a similar quantity of complaints, that GM has, in some cases, re-coated the frames of particularly badly rusting trucks. Unfortunately, they simply use the exact same wax material and rarely prepare the service correctly by removing the rust and old wax. Since the wax does a poor job of bonding and air-locking the already formed rust, this only masks the problem for it to return worse a few months later. In this video, we show you how to fix this problem correctly so that you will have a rust free frame for many years to come.- 14 replies
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- silverado frame rust
- sierra frame rust
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