Transmission Fluid Cold Check - Chevy and GMC Duramax Diesel Forum
11-16 LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 3 (permalink) Old 11-22-2019, 09:45 AM Thread Starter
Join Date: Nov 2019
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Transmission Fluid Cold Check

I changed the fluid and spin on filter on my 16. I replaced the fluid with what came out, about 7 qts. I did a cold check on the fluid and it was super low, about an inch under the cold marks. I've read about the cold check procedure but had a couple questions. Is it just for initial startup or is there a cold temp range like the 165-200 hot range? Its around 20 deg here so its difficult to get a hot check and the truck wants to go in high idle which may affect it also. Trying not to overfill and have a bigger headache. Thanks for any info.
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post #2 of 3 (permalink) Old 11-22-2019, 08:58 PM
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I don't think I've heard/read of a 'cold check' temperature range.

Just the 'cold check' steps from the Duramax supplement.

(probably why the cold check level is also a band)

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post #3 of 3 (permalink) Old 11-23-2019, 07:33 AM
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I did my 16 a month ago. Noted dipstick before the change. Drained and did the spin on then measured exactly what came out, put exactly that much back in plus about 8 oz for the filter. Came out perfect. It won't hurt to be just a tad low. Run it for a while and check it again.

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