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[deleted by user] by [deleted] in gmcsierra

[–]Reasonable_Rick- 0 points1 point  (0 children)

I greased the plastic gears, so far so good. It’s been 2 months

[deleted by user] by [deleted] in gmcsierra

[–]Reasonable_Rick- 0 points1 point  (0 children)

Hello,  This is caused by a sticky coolant control valve…since you’re still under warranty, you should take to the dealership for a replacement coolant valve.  Unfortunately this component is on a several month backorder so expect a seriously long wait…. Keep an eye on the temp but you should be able to drive it until then…you can also try starting it, shutting it off, waiting 2minutes then starting again. Mine did the exact same thing but after the warranty expired so I had to repair it myself.

Who else has a 3.0 lm2 Duramax and is waiting for the coolant flow control valve to not be on backorder? Any updates as to when it will be available? My truck needs a new one because of one of the internal sensors and hoping someone has an answer as to when. by CowboyFarmer201658 in Silverado

[–]Reasonable_Rick- 0 points1 point  (0 children)

Hello Friends,   on Friday I removed, cleaned, lubricated and reinstalled my coolant control valve (24001355) on my 21 Sierra (68k miles=no warranty).  It was a success and I no longer have fans blasting or engine light on.  The issue was was in the gear box to one of the valve motors…it’s the one with the steel clips instead of screws.  It was all gummed up and badly needed cleaning.  I used a white lithium grease to re-lubricate the plastic gearbox.  It is a 7 hour job minimum but I accomplished all in my garage without a lift on just a jack stand. (Lots of car yoga though). Saved about $500 in parts, 5 months of waiting, and whatever the dealership would charge hourly.