Check your rear end fluid
#1
Safety Car
Thread Starter
Check your rear end fluid
Probably not the first but I just added 1 Qt. of dexron LS gear oil (GM P/N 88862624) to my 2016 Z51. Since the total capacity is less than 3 Qts. down one can't be good
Last edited by C8-Vette; 06-06-2016 at 11:57 AM.
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Rebel Yell (06-06-2016)
#2
Le Mans Master
Do you know if this a problem from the factory, under-filling the fluid?
#5
Safety Car
Thread Starter
Jack up the rear or on ramps if you have them. Remove the top plug of the rear. If after removing the plug (a 3/8" rachet end with a small extension works just fine) if no fluid leaks out stick your finger in the opening and try to feel where it is.( If it does not leak when you remove the plug you need fluid)
Caution.. the plug is right near the hot exhaust , be careful not to burn yourself. Removing the plug can be a pain ,be patient.
Capacity is 2.9 Qts. If its low, you probably need a quart or less. Your local GM dealer has Dexron LS fluid Gm part # 88862624. About $10 a qt. No need for special clutch plate additive. The GM fluid already has it in it.
Caution.. the plug is right near the hot exhaust , be careful not to burn yourself. Removing the plug can be a pain ,be patient.
Capacity is 2.9 Qts. If its low, you probably need a quart or less. Your local GM dealer has Dexron LS fluid Gm part # 88862624. About $10 a qt. No need for special clutch plate additive. The GM fluid already has it in it.
#6
Drifting
#7
Safety Car
Thread Starter
[QUOTE=Maxie2U;1592364888]Do you know if this a problem from the factory, under-filling the fluid?[/QUOT
Have seen some threads on this in recent months, that's what had me check it.
Have seen some threads on this in recent months, that's what had me check it.
#8
Safety Car
Thread Starter
#9
Le Mans Master
Thanks. I will have my dealer check the rear end fluid when I bring it in for my first oil change.
Last edited by Maxie2U; 06-06-2016 at 01:19 PM.
#10
Melting Slicks
So you jacked up only the rear end, canting the car forward. Then opened the fill screw on the back side of the diff and added a quart. You've overfilled your diff.
You can access the fill port with the car on the ground. Just shimmy under. 'Full' is even with the fill hole to 13mm below it. Tilting the car forward by only jacking the rear up will not allow you to assess the situation well. And filling in that position until it overflows will again just overfill it.
You can access the fill port with the car on the ground. Just shimmy under. 'Full' is even with the fill hole to 13mm below it. Tilting the car forward by only jacking the rear up will not allow you to assess the situation well. And filling in that position until it overflows will again just overfill it.
Last edited by spearfish25; 06-06-2016 at 01:33 PM.
#11
Jack up the rear or on ramps if you have them. Remove the top plug of the rear. If after removing the plug (a 3/8" rachet end with a small extension works just fine) if no fluid leaks out stick your finger in the opening and try to feel where it is.( If it does not leak when you remove the plug you need fluid)
Caution.. the plug is right near the hot exhaust , be careful not to burn yourself. Removing the plug can be a pain ,be patient.
Capacity is 2.9 Qts. If its low, you probably need a quart or less. Your local GM dealer has Dexron LS fluid Gm part # 88862624. About $10 a qt. No need for special clutch plate additive. The GM fluid already has it in it.
Caution.. the plug is right near the hot exhaust , be careful not to burn yourself. Removing the plug can be a pain ,be patient.
Capacity is 2.9 Qts. If its low, you probably need a quart or less. Your local GM dealer has Dexron LS fluid Gm part # 88862624. About $10 a qt. No need for special clutch plate additive. The GM fluid already has it in it.
Last edited by only9balls; 06-06-2016 at 02:14 PM.
#12
Le Mans Master
My 2014 was also about 1\2 -inch below the hole from the factory, but according to GM that is within the acceptable level. I went ahead and filled it up to the bottom of the hole anyway.
Last edited by TEXHAWK0; 06-06-2016 at 01:51 PM.
#13
Team Owner
Member Since: Jan 2007
Location: cookeville tennessee
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I checked mine it was low so I just chg it and the auto trans out. But the trans was good on level, but the rear end was low I never did add only chg it out.
But from the amount I got out to what I had to put into it to fill was a good amount. Mine also a 2014. Robert
But from the amount I got out to what I had to put into it to fill was a good amount. Mine also a 2014. Robert
#14
Make sure the car is level when doing this.
#15
Safety Car
Thread Starter
So you jacked up only the rear end, canting the car forward. Then opened the fill screw on the back side of the diff and added a quart. You've overfilled your diff.
You can access the fill port with the car on the ground. Just shimmy under. 'Full' is even with the fill hole to 13mm below it. Tilting the car forward by only jacking the rear up will not allow you to assess the situation well. And filling in that position until it overflows will again just overfill it.
You can access the fill port with the car on the ground. Just shimmy under. 'Full' is even with the fill hole to 13mm below it. Tilting the car forward by only jacking the rear up will not allow you to assess the situation well. And filling in that position until it overflows will again just overfill it.
Last edited by C8-Vette; 06-06-2016 at 04:34 PM.
#16
Pro
Rear oil diff check problem.
I went to check rear diff oil on my nonZ. Dumb a$$ me pulled the drain plug my mistake and lost about a OT or so of lube before I could get the plug back in. Looks like the rear takes about 2.9 qt of dexron LS. Is the bleed method only for the Z51? Or can I go to the dealer and buy the oil and just top it back off? I will also get a OT pump to make it easy.
I went to check rear diff oil on my nonZ. Dumb a$$ me pulled the drain plug my mistake and lost about a OT or so of lube before I could get the plug back in. Looks like the rear takes about 2.9 qt of dexron LS. Is the bleed method only for the Z51? Or can I go to the dealer and buy the oil and just top it back off? I will also get a OT pump to make it easy.
#17
Le Mans Master
Rear oil diff check problem.
I went to check rear diff oil on my nonZ. Dumb a$$ me pulled the drain plug my mistake and lost about a OT or so of lube before I could get the plug back in. Looks like the rear takes about 2.9 qt of dexron LS. Is the bleed method only for the Z51? Or can I go to the dealer and buy the oil and just top it back off? I will also get a OT pump to make it easy.
I went to check rear diff oil on my nonZ. Dumb a$$ me pulled the drain plug my mistake and lost about a OT or so of lube before I could get the plug back in. Looks like the rear takes about 2.9 qt of dexron LS. Is the bleed method only for the Z51? Or can I go to the dealer and buy the oil and just top it back off? I will also get a OT pump to make it easy.
Not a bad idea to go ahead and drain and refill since mine had significant deposits on the plug at 8,000 miles.
NO, it's the OTHER plug!
Last edited by TEXHAWK0; 06-06-2016 at 04:59 PM.
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64Corvette (06-06-2016),
Bill B 1 (06-06-2016)
#18
Drifting
By the way, I tried one of the cheap bottle pumps and it broke before I even got the tube filled, so I drilled a couple of holes in the cap, and used my air compressor and trigger handle to push the fluid out of the bottle and into the differential... No mess and you can control the level easily. Note, air pressure goes on TOP of the fluid, and forces the fluid down and out the fill tube, so the fill tube must go to the bottom of the bottle. Since there is only air on the top of the bottle, any leaks are only air.
Not a bad idea to go ahead and drain and refill since mine had significant deposits on the plug at 8,000 miles.
NO, it's the OTHER plug!
Not a bad idea to go ahead and drain and refill since mine had significant deposits on the plug at 8,000 miles.
NO, it's the OTHER plug!
#19
Burning Brakes
I love working on my car. However, sometimes I read a thread and wonder what the dealership charges.
I'll definitely ask them to check next time I'm there. I bet checking is free (versus a massive PITA for me)
I'll definitely ask them to check next time I'm there. I bet checking is free (versus a massive PITA for me)
#20
Not worth my time to go find tools for that.