Anti-freeze flush

[ujtruck]

And Also check PH Level

 

 

[Gurrzt]

Even if you pay to have the work done by a shop, a 40-50K interval for a cooling system service is a good idea. It's not that expensive compared to what you may have to pay to have done if you use the GM schedule in the owner's manual (My 2008 book shows 150K). But the manual also says that depending on the use a rig gets can change the frequency of service.

And do not forget the "water wetter", I have been using Royal Purple "Purple Ice", add it to the antifreeze, and use distilled water.

[CapitalTruck]

I do mine every 2-3 years or 75k miles, whichever comes first.

[Bob D]

I'm diligent with maintenance, but also try to keep things simple (lazy?).

I never flush, rather, I buy several gal.s of distilled water ($0.99 ea.).

Drain, fill with same. Repeat. Repeat if necessary. Drain & add AF.

[David_L6]

I'm diligent with maintenance, but also try to keep things simple (lazy?).

I never flush, rather, I buy several gal.s of distilled water ($0.99 ea.).

Drain, fill with same. Repeat. Repeat if necessary. Drain & add AF.

That's the way I do it also. Just did exactly that to my daughter's truck this past Monday.