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Installation of B & M rear differential cover model 71502

2012 silverado 10bolt

Installation of B & M rear differential cover model 71502

Postby cso2014 [OP] » May 18 2017, 5:49am

Good morning fellow truck enthusiasts, :) Well I've finally started working on the upgrades on my 2012 silverado. The first thing I did was installed the airaid air intake and a throttle body spacer. I didn't take pictures of those parts because it's a pretty straight forward installation. Remove the factory air intake tube, remove 4 bolts, remove throttle body, install spacer with supplied bolts and put on new airaid intake tube.

Next I installed this B & M diff cover
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A couple of tips. Be prepared to do a modification to the parking brake cable bracket that mounts to the 12 pm location of the diff cover. I had to remove it then, using a bench grinder, trimmed down the sides so it would fit in between the fins of the diff cover at 12 pm. Second, the supplied cover bolts are not long enough to secure the cable mounted at 11 pm to the diff cover. I took one of the supplied bolts with me to the hardware store and purchased a slightly longer stainless steel bolt, which worked. The biggest problem I ran into was trimming the bracket for the parking brake cable that goes in front of the diff cover to fit between the fins. If you're working without a lift, it can be a little tricky aligning the diff cover. Just take your time and make sure the re-usable factory gasket is lined up properly. I will take some pics of the intake tube and diff cover installed to post.
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Re: Installation of B & M rear differential cover model 7150

Postby Waltheraustin » May 18 2017, 2:35pm

I like the rear diff. Throttle body spacers aren't too popular around here but air raid tube certainly is. Both the rear diff cover and air raid on are my list


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Re: Installation of B & M rear differential cover model 7150

Postby CritterGitter » May 18 2017, 2:54pm

your really gonna like having drain plug for quick fluid changes with the B&M cover...
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Re: Installation of B & M rear differential cover model 7150

Postby 19trax95 » May 18 2017, 3:14pm

Ditch the throttle body spacer. It won't do anything for these motors.

Biggest difference you can make as far as simple stuff is exhaust, intake and tune.
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Re: Installation of B & M rear differential cover model 7150

Postby cso2014 [OP] » May 19 2017, 7:28am

Hello again and thank you for your responses. I agree with you in that I haven'y noticed any significant difference in the performance of my truck with the throttle body spacer. The unit I purchased was around $50 so I'm going to just leave it on. I forgot to mention that I also drained and replaced the front differential and the transfer case fluids too. My truck has about 35,000 miles on it. According to the factory manual, transfer case fluid change intervals are 45,000 miles severe use and 97,500 miles normal use. Again both very straight forward jobs. The below link is for a video I used as a reference to do the fluid changes. https://www.youtube.com/watch?v=6GJSSzlgAmU

I purchased the borla touring exhaust and muffler system, which I'm going to have installed after I finish the rust proofing job. Not looking forward to dealing with the peeling factory wax undercoating. Any suggestions would be appreciated. Thanks
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Re: Installation of B & M rear differential cover model 7150

Postby Rambodog » May 19 2017, 9:28am

I like that cover. Along with the drain plug, is it extra capacity too? I new car under coated with a company called Ziebart. Included are annual resprays to keep things protected and a guaranty if things start to rust. They have used car programs too. Probably something near you that is similar. There is always the power wash and spraying cans yourself. If you have access to a lift, your golden. I choose my battles and paid for this service to be done and maintained. If it's not too late, return the TBS cause it's $50 you can use on something useful. With your Sequential injection motor, those TBS's don't do anything at all. Air and fuel aren't mixed anywhere near it to see a benefit. Thanks for the tips during install. Have a link to the one you have? Save the shopping around if you believe you found the best price already.
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Re: Installation of B & M rear differential cover model 7150

Postby cso2014 [OP] » May 19 2017, 11:59am

Morning. I ordered my diff cover on ebay, by telephone. Here is a link to the listings for the cover on ebay. I don't recall the retailer, but I do know it was not Summit Racing. http://www.ebay.com/sch/i.html?_from=R4 ... 02&_sop=15

When I ordered the diff cover, the sales representative gave me like $20.00 off the list price, with free shipping. According to B & M, this diff cover adds .4 quart extra capacity to the differential fluid. Everything I have read online indicates my 2012 5.3l, 6 speed trans, G80 rear differential holds 2 1/2 to 3 quarts max. With the B & M, it should increase that capacity by almost 1/2 quart. Make sure you identify if your diff is a limited slip, or G80 to ensure the proper additive is added. Most good synthetic gear oils have a limited slip additive,but you should follow your manual guidelines.
Here is a link to install the same diff cover on a F**d. Another tip. Follow the instructions for what B & M calls the "load bolts" exactly and don't over tighten them. https://www.youtube.com/watch?v=mOPfcwHJA20 FYI, there are other manufacturers out there who who make diff covers for my truck without the load bolt technology.
I'm happy with the look and overall performance of my new cover. Here's another link to a different type of diff cover for my truck. https://www.yourcovers.com/diffcover_gm85.php

Thanks for the tips for the undercoating too. Will look into it where I live.
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Re: Installation of B & M rear differential cover model 7150

Postby mikewmikew is online! » May 19 2017, 12:16pm

I just installed the PML cover myself. Took about 3 quarts to fill. Didn't measure what I drained out but appeared to be around 2 quarts.
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Re: Installation of B & M rear differential cover model 7150

Postby CritterGitter » May 19 2017, 1:10pm

Fellas, if you wouldn't mind putting pics up of your aftermarket diff covers.... That'd be great. *no lumberg intended*
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Re: Installation of B & M rear differential cover model 7150

Postby ricka182ricka182 is online! » May 19 2017, 1:21pm

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