Heavy Duty Brakes?
I am prepping a "new to me" TV and looking for some pre-season advice. My tow vehicles have always been trucks I bought new, so was very aware of prior maintenance etc. My new TV is a 3500 Silverado...
Forum Discussion
73guna wrote:
Flush and fill your power steering fluid also.
This made a world of difference for my truck.
This would be on my "To Do List" for OP's truck or any other new to me truck that uses a hydro-boost brake system. Proper function of the power steering system insures brakes will work when the pedal is pushed. A poorly maintained ps system on these trucks can exhibit brake malfunction if hydro-boost looses line pressure under load. Two main symptoms -loss of steering assist and or loss of brake assist.
Brake fluid flush with ABS cycling would be on my "To Do List", too. I use DOT 4 fluid not 5.1 mainly for moisture resistance.
Allison fluid change and filters would be a good idea, too. Unless service has been documented as being done at the proper intervals for fluid used in transmission. This year truck, depending on S/N could have had Dex III (Allison TES-389) or Dex IV (GM spec)fluid installed. Dex IV has caused seal hardening issues for some. The easy way to avoid the issue is to use certified Allison TES-389 (normal service intervals) or Allison TES-295 specification (extended service interval)fluids for service.
