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Duramax Third Generation: 2006-2007.5 (LBZ & LLY) Discuss the third generation (2006-2007.5 LBZ & LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion also belongs in this forum due to the similarities of the 2006 LBZ and the 2006 LLY. Engine related discussion ONLY.

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Old 09-27-2019, 12:02 PM   #1 (permalink)
ottomatic
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Location: E.Tn
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Question?

Belt tensioner crapped out and lost power steering & brakes @ 45mph on twisty mountain road.
In process of replacing Power Steering pump with updated pump.
Belt tensioner & belt all pulleys & adding cooler for PS & all lines.

Truck has 225,000 mi on it.

Should I replace the replace the water pump since it is original & everything except radiator is out of the way??. Plus anything else I might have missed.

Thanks. I have not posted in awhile as truck has been flawless.

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06 ,4X4, LBZ,EC. 230K
4 tires & rims, headlights & tail lights, diesel motor, automatic transmission (Allison) w/ leaky lines , heat & ac (forced air), electrically operated adjustable seats, sun roof (leaks), steering wheel (clunks) .
Check Engine light on for 2 1/2 years . Code P003A
Got tired of clearing. Truck runs fine 17mpg around town, 22.3 highway.
Lighted steering wheel controls: Bulbs blew after 1.5 years of ownership.
GM should swap bulbs with check engine light.
BTW Fuel additive EVERY tank since new.


2015 GSW SE TDI manual Reflex silver 55 mpg (best 260 mi trip)
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Old 09-27-2019, 03:19 PM   #2 (permalink)
davester
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If it's original, then I would say yes. You might also consider changing the PS lines as they are likely leaking if they haven't been replaced, same with oil and transmission cooler lines.

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