2013 SRX Premium AWD 3.6 - replacement of transfer case, differential, and differential clutch fluids

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Fairchild670

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Sep 5, 2024
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Greetings,

I own a 2013 Cadillac SRX Premium AWD 3.6L and am conducting the majority of the GM-recommended scheduled maintenance independently, as the GM dealerships and most local mechanics in Israel lack the requisite experience and knowledge regarding this vehicle, having misdiagnosed issues on two occasions and caused more harm than benefit. Additionally, it is much more economical, which is an advantageous aspect.

Per the maintenance plan, I have attained the requisite miles (95K) for the transfer case fluid change. I would appreciate any answers to my various inquiries before to proceeding with the repair.

The owner's handbook specifies that the suggested transfer case fluid is GM Part No. 19256084 (19256085 in Canada). Regrettably, neither option is accessible in my vicinity or online. I have discovered ACDelco 100% Synthetic Gear Oil (75W90 API GL5) under an other component number. It seems to possess comparable specifications, however I cannot confirm whether they are same. Do you consider it OK to use it for the transfer case fluid replacement?
The vehicle service handbook specifies the disposal of the fill and drain plugs during the procedure. Is that practically essential? Is there a substance I may use to maintain the seal rather than substituting the plugs?
The initial vehicle maintenance schedule does not specify the replacement of differential oil and differential clutch oil. In my opinion, they seem to be fluids that need to be substituted according to a timetable similar to that of transfer case fluid replacement. Should I also replace them? What are the GM recommended fluids for the 2013 SRX? I cannot locate that information in the owner's handbook or the GM service/workshop manuals.
I have read that several fluid replacements I previously stated include a restricted slip ingredient, and I am uncertain if I should use it or not. Can you identify the automotive component or RPO necessary to ascertain the need for restricted slip additive and the appropriate fluid for its application?
 
Greetings,

Any GL5 75-90 lubricant is OK for the rear differential; I am using Valvoline. I further replaced the transfer case fluid. I do this task every 25,000 units since it is a simple job.
I replaced the bottom plugs in the rear differential and transfer case. Avoid placing any objects on the threads, as their ingress may result in a blockage... Catastrophe!
No additives are required in any of the fluids I used. It is already present in the fluid, if you purchase the appropriate specifications. for example, GL5

For the Haldex Clutch System, it is necessary to do more than only flushing the fluid. A filter inside need replacement, and all debris must be removed. Refer to this thread for further information.
 
Thank you,

Geoff1966​

, for the comprehensive explanation and the crucial pointer to the Haldex discussion! I will now possess more confidence in replacing the fluids. Regarding the Haldex internal cleaning and filter replacement, I must investigate more to comprehend the risks associated with doing this task alone.

By the way, are you aware whether the GL5 75-90 fluid is compatible with all three components: transmission, differential, and differential clutch? I am inquiring because I have located the relevant page in the service handbook that specifies them, and they all own distinct GM part numbers that are inaccessible to me.

Thank you once again!
 
These are distinct fluids. Despite both the rear differential and transfer case using 75-90, they have additives that make them application-specific.
The Haldex fluid is very specialized. I used the GM transfer case fluid included in the white container.

If you have access to Amazon, the links to the repair kit and Haldex fluid I used are provided in the preceding article.
Given your lack of access to GM fluids, the optimal recommendation is to locate a nearby supplier and cross-reference the GM component number.
I identified the Ravenol for the Haldex in this manner.

The Haldex service is uncomplicated; go to the conclusion of the article for a second individual who has executed the same service with further detail.

Best of luck!
 
Regrettably, GM dealerships in this area do not provide these maintenance services, nor do they provide guidance on the fluids or sell them. It is uncertain if this approach results in costly component replacements or reflects a deficiency in sound judgment, but it remains as it is. I have identified the fluids in the auto service manual that correlate to other forum threads: 88900401; 88863349; 19351882. Amazon does not send these internationally, but after much research on Google, I have found three merchants who would transport the fluids to my area. Each vendor ships just one of the fluids, resulting in my expenditure of over $300 for this meager 3 quarts. However, I will be reassured that I am use appropriate lubricants for the SRX.

Thank you once again for your insight and assistance.
 
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