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04-28-2019, 12:24 PM
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#1 |
 
Drives: 2018 Camaro ZL1 A10 HBM Join Date: Mar 2019
Location: Austin, TX
Posts: 16
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2018 ZL1 Rear Differential Fill Bolt
I’ve hit 3000 miles on my 2018 ZL1 and keep reading about how we should be changing the rear diff fluid at 1500. I didn’t want to pay the ridiculous price for having this done at the dealership so I bought everything I needed to do this myself: trolley jack, jack stands, oil pan, and diff fluid.
I got the car jacked up and couldn’t for the life of me get the top (fill) bolt to budge. Tried WD40 and different angles but it wasn’t moving. Has anyone else had this issue? Any suggestions for me? I’m just using a standard socket wrench with a short extension. I would like to avoid going to the dealership, especially since I’ve already forked over the money for all this equipment that I probably wouldn’t have purchased otherwise. |
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04-28-2019, 12:29 PM
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#2 |
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Flyin NOE
Drives: 2018 ZL1 (A10) Join Date: Apr 2017
Location: TX
Posts: 949
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Try bumping the end of ratchet with a rubber mallet. I remember having to do that on mine.
If my next statement offends you that's not my intention, however, being upside down under a car a LOT of folks mistake counterclockwise for clockwise (righty tightly, lefty loosie). |
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04-28-2019, 12:37 PM
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#3 |
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Drives: 2018 Camaro ZL1 A10 HBM Join Date: Mar 2019
Location: Austin, TX
Posts: 16
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No offense taken; was definitely turning the correct direction. Double checked that several times because I have never had this issue with a bolt before.
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04-28-2019, 12:47 PM
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#4 | |
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Flyin NOE
Drives: 2018 ZL1 (A10) Join Date: Apr 2017
Location: TX
Posts: 949
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Quote:
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04-28-2019, 01:32 PM
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#5 |
          
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,814
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Sharp blow with your heel of your hand should do it. A 1/2" ratchet with a 1/2" to 3/8" adapter makes life easier.
__________________
'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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04-28-2019, 02:50 PM
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#6 |
Drives: 2019 ZL-1, Shadow Gray, Sold Join Date: Jan 2019
Location: Fredericksburg, VA
Posts: 1,390
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1/2 torque wrench with an extension. If that doesn't break it loose, something is wrong!
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04-28-2019, 03:40 PM
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#7 |
 Drives: 2019 ZL1 A10 Join Date: Jan 2019
Location: Naples, FL
Posts: 100
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1\2" Breaker bar or put a metal pipe on the end of your ratchet. Never use a Torque wrench to remove anything unless you don't like it anymore.
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04-28-2019, 03:55 PM
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#8 | |
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Shadow Gray '19 ZLE M6
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Quote:
If you don't have a breaker bar, a piece of copper pipe or anything else you have that can be put on the end of the ratchet for leverage will work.
__________________
2019 ZL1 1LE | M6 | SGM | PDR | CF Dash | Nav | Wheel Locks
PPF | Paint Correction | ZL1 Addons Rock Guards | ZL1 Addons Lift Pads | ZL1 Addons Feather Lite Tow Hook | JWM Smoked Sidemarkers | Wildhammer Smoked Rear Reflectors | JWM License Plate LEDs | RotoFab CAI | ADM IC Reservoir v2 | BC Forged RZ05 | SPL Toe Arms | BW Brake Deflectors | CMS Roll Bar | Schroth Profi II ASM Harnesses . Sold: '99 Trans Am (bolt-ons & cam) | '00 WS6 (bolt-ons, heads, cam, 12 bolt) | '05 CTS-V (bolt-ons, short throw) | '10 SS/RS M6 (short throw, CAI, coilovers, LTs, catback, JRE tune) | '01 WS6 YouTube |
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04-29-2019, 08:27 AM
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#9 |
Drives: 2015commemorative vert 2SS Join Date: Oct 2013
Location: northern Indiana
Posts: 949
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The toughest part of this job is using the pump, to put the replacement fluid back in. My dealer wanted $140 to do this service!
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2018 ZL1 Bright Yellow, A10, PDR, sunroof, carbon hood, and dash- sold
2020 2SS A10 sunroof..shock and steel special-traded 2015 commemorative vert 2ss |
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