What’s the differential fluid for a 2017 GMC Sierra 5.3 SLE?

Discussion Forum
1

I’m trying to figure out what differential fluid I should use for my 2017 GMC Sierra 5.3 SLE. The manual says 75W-85, but it seems hard to find. I’ve heard some people use 75W-90 instead. Any other opinions? Also, how much fluid does it require?

2

I’ve read that 75W-90 is a good substitute if you can’t find 75W-85. Just make sure it meets the right specifications for your diff.

3

Tyler said:
I’ve read that 75W-90 is a good substitute if you can’t find 75W-85. Just make sure it meets the right specifications for your diff.

Thanks for the info! Do you know if there’s a specific brand you recommend?

4

For capacity, it usually requires about 2 to 3 quarts, but it’s best to check your owner’s manual for the exact amount.

5

Oli said:
For capacity, it usually requires about 2 to 3 quarts, but it’s best to check your owner’s manual for the exact amount.

Got it! I’ll check the manual to be sure. Appreciate the help!

6

Just make sure the fluid you choose is compatible with your truck. It’s better to be safe!

7

River said:
Just make sure the fluid you choose is compatible with your truck. It’s better to be safe!

Definitely! I’ll make sure to double-check that.

8

If you want to be extra cautious, you could call a GMC dealer and ask for their recommendation. They might have insight into what works best.

9

Shane said:
If you want to be extra cautious, you could call a GMC dealer and ask for their recommendation. They might have insight into what works best.

That’s a good idea! I’ll do that if I can’t find what I need.

10

I switched to 75W-90 in my truck, and it’s been running fine. Just keep an eye on it for any changes.

11

Noah said:
I switched to 75W-90 in my truck, and it’s been running fine. Just keep an eye on it for any changes.

Thanks for sharing your experience! That makes me feel better about going with 75W-90.