oil pan removal, easy or not ++pictures added++ - Chevy Colorado & GMC Canyon
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post #1 of 21 (permalink) Old 04-22-2008, 01:53 AM Thread Starter
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oil pan removal, easy or not ++pictures added++

just got back form a 4x4 trip and about half way though i took a rock to the oil pan and lets just say by by oil. so i shut the motor off and took a look, i found a hole about the size of a base ball, man im really starting to hate gm on building these trucks with no protection. so long story short i ended up useing a small tin pan, cutting it onto a square patch and jb quicking it up. and my buddy took a 3.5 hr round trip to the nearest gas station to get me some oil. well it held up ok and got me home but now i need to replace it. i cant find any write ups on removing the oil pan, any help. i have a 04 4x4 z71 crew cab. thanks. and ill post some pics tomarrow after i get home from work.



up on a rock



waiting for oil



jb quick patch



death to the oil pan



checking things out



up on the side of the hill

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post #2 of 21 (permalink) Old 04-22-2008, 03:13 AM
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Re: oil pan removal, easy or not

Uh. Remove the bolts.

Suggest draining oil first?

*edit
Crap didn't realize he had a 4x4. Looks pretty simple for a 2wd.
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post #3 of 21 (permalink) Old 04-22-2008, 03:19 AM
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Re: oil pan removal, easy or not

Ah crap you've got a 4x4? Your screeeeeeeeeeeeeeeewed


Your gonna need to pull the front diff out to get enough room and if i remember correctly your also going to need to unbolt the steering rack. Its been a while since i've seen it done, ever since GM came out with a tool to hold the timing chain tensioner in place we haven't had to remove the timing chain cover or oil pan anymore to replace the cylinder heads.

Search ScottyD he did a writeup on how he replaced his cylinder head and chain tensioner in his garage somewhere on here. But here's some pics of mine that might help. Remember to get some RTV as there is no oil pan gasket only silicone.



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post #4 of 21 (permalink) Old 04-22-2008, 03:25 AM
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Re: oil pan removal, easy or not

Here is directly from GM service manual:

Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
Remove the engine protection shield. Refer to Engine Protection Shield Replacement in Frame and Underbody.
Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
Remove the right front axle. Refer to Wheel Drive Shaft Replacement .
Remove the applicable components in order to gain clearance to remove the oil pan:
RWD

Remove the power steering gear. Refer to Steering Gear Replacement in Power Steering System.

4WD



- Remove the differential carrier assembly bushing to frame bolts ONLY.

- Pull the differential carrier assembly downward.

- Secure the pinion yoke, in order to prevent the differential carrier from rotating.



Remove the service slot plug.
Remove the nuts securing the fuel hose/pipe bracket to the transmission, and position aside.
Remove 4 lower transmission mounting bolts that are attached to the oil pan.
For the 4WD only, remove the power steering gear mounting bolts only. Refer to Steering Gear Replacement in Power Steering System.
Pull the power steering gear downward in order to gain access to the oil pan.
Disconnect the engine wiring harness retainers from the oil pan.



Remove the oil pan bolts.
Install 2 bolts in the threaded holes at the rear of the oil pan to act as jack screws and tighten evenly to release the oil pan from the engine block.
Remove the oil pan.
Remove the 2 bolts from the jack screw holes.
Clean and inspect the oil pan. Refer to Oil Pan Cleaning and Inspection .
Clean and inspect the engine block sealing surface.



Important: The oil pan must be installed within 10 minutes from when the sealer was applied.

Apply a 5.5 mm (0.22 in) bead of sealer to the oil pan in the areas marked (1). Refer to Sealers, Adhesives, and Lubricants for the correct part number.
Apply a 3 mm (0.12 in) bead of sealer to the oil pan in the area marked (2). Refer to Sealers, Adhesives, and Lubricants for the correct part number.



Important: Use care not to allow the sealer to contact the oil pump pipe and screen assembly.

Position the oil pan to the engine block.

Important: The rear oil pan surface needs to be flush with the rear block surface.



Use the following applicable step to properly align the oil pan:
Transmission Removed

Use a straight edge at the rear of the block and oil pan for proper alignment.

Transmission Installed

Ensure the oil pan is positioned fully rearward against the transmission mounting surface.

Install the oil pan bolts.
Notice: Refer to Fastener Notice in the Preface section.

Tighten the oil pan bolts.
Tighten

Tighten the (side) oil pan bolts to 25 Nm (18 lb ft).

Tighten the (end) oil pan bolts to 10 Nm (89 lb in).

Connect the engine wiring harness retainers to the oil pan.
For the 4WD only, position the power steering gear upward to the frame assembly.
For the 4WD only, install the power steering gear mounting bolts. Refer to Steering Gear Replacement in Power Steering System.

Install the 4 lower transmission mounting bolts.
Tighten
Tighten the transmission mounting bolts to 50 Nm (37 lb ft).

Install the nuts securing the fuel hose/pipe bracket to the transmission.
Tighten
Tighten the fuel hose/pipe bracket nuts to 20 Nm (15 lb ft).

Install the service slot plug.
Install the right front axle. Refer to Wheel Drive Shaft Replacement .
Install the applicable components:
RWD

Install the power steering gear. Refer to Steering Gear Replacement in Power Steering System.



4WD

- Position the differential carrier assembly to the frame.

- Install the differential carrier assembly bushing to frame bolts.

Tighten
Tighten the differential carrier assembly bushing to frame bolts to 152 Nm (112 lb ft).

Install the engine protection shield. Refer to Engine Protection Shield Replacement in Frame and Underbody.
Install the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
Fill the engine oil. Refer to Engine Oil and Oil Filter Replacement .

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post #5 of 21 (permalink) Old 04-24-2008, 09:04 PM
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Re: oil pan removal, easy or not

ouch...

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post #6 of 21 (permalink) Old 04-25-2008, 11:19 PM
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Re: oil pan removal, easy or not

That is fugly.... makes me want to go out and fab up a nice beefy shield

'course already knowing how vulnerable that area is 'cause I do my own maintenance, oil and such, I would not have been digging in rocks that big without some shielding. Don't mean to rub salt in that wound my friend, that truly sucks and is going to be a huge time sink.

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post #7 of 21 (permalink) Old 08-01-2008, 02:25 PM
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Re: oil pan removal, easy or not ++pictures added++

Nice info. Those pics remind me of a child who was trying to trace the manual lol, it's good though just looks funny to me.

I'de suggest some skidplates next time

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post #8 of 21 (permalink) Old 08-02-2008, 03:43 AM
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Re: oil pan removal, easy or not ++pictures added++

Beleive it or not those are actual GM service manual images haha. You should see our parts catalogue, even WORSE images haha.

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post #9 of 21 (permalink) Old 08-02-2008, 08:46 AM
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Re: oil pan removal, easy or not ++pictures added++

I pray I'll never have a leak :S

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post #10 of 21 (permalink) Old 08-02-2008, 09:53 AM
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Re: oil pan removal, easy or not ++pictures added++

turbizzy is a great resource!

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post #11 of 21 (permalink) Old 08-02-2008, 12:25 PM Thread Starter
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Re: oil pan removal, easy or not ++pictures added++

it wsnt that bad, now that i did it, it just took about 8hrs, could have been a few less if i would have just droped the front diff all the way out right away and not try to take short cuts, also if you replace your oil pan befor you order it check the markings on it cause after a couple yrs after 04 gm decided to change it slightly and you need a diff oil p/u, retarded. so my truck was down for about an extra week. thanks for the pages from the book they were helpful.

- - - - - - - - - - - - - - - - - - - -
'04 Colorado LS Crew Cab Z71
i5 4x4 Auto
31x10.5x15 mud terrain
Black and AZ pin stripes

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post #12 of 21 (permalink) Old 08-02-2008, 01:10 PM
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Re: oil pan removal, easy or not ++pictures added++

No problem guys.

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post #13 of 21 (permalink) Old 09-02-2008, 12:54 PM
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Re: oil pan removal, easy or not ++pictures added++

God I love it that you have to lost almost the entire front end to move these things... I wonder if you would be better off partially yanking the engine out enough to get the clearence to pull the pan bolts... turbizzy you do this for a living what do you think. I had to do an oilpan on a 1500 once but it was 2wd and we lucked out because we barely had enough room to get the old pan out.

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post #14 of 21 (permalink) Old 09-02-2008, 09:32 PM
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Re: oil pan removal, easy or not ++pictures added++

Yeah oil pans in general are never really fun since you gotta deal with oil draining on your face, parts need to be moved out of the way etc. Ill tell you what though, i'd rather pull an oil pan from a 355 than a later model S10 4wd V6. Those suuuuck, i remember using a cherry picker to lift the motor off its mounts and doing the entire job on my back on a creeper.

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post #15 of 21 (permalink) Old 09-02-2008, 09:46 PM
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Re: oil pan removal, easy or not ++pictures added++

Eh F that, ide wrather pull the engine. or sell it LOL. Sigh but we all can't be so lucky. I just wish I had some post lifts so I don't have use a creeper... my driveway is just the coarse binder coat of blacktop and the wheels don't roll very well, and tools get in the way of them too!

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Mods:
Spectre Air Filter, Optima Yellow Top 34-78, Imperial Tranny Cooler, Pioneer 7700MP HU, Pioneer Component Speakers with Sony Amp.
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post #16 of 21 (permalink) Old 09-03-2008, 06:10 AM
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Re: oil pan removal, easy or not ++pictures added++

Ouch! Fresh oil and trail repair, ftw! :D

After you fix her up, put some SuperSkidz on.

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post #17 of 21 (permalink) Old 09-11-2008, 01:15 PM
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Re: oil pan removal, easy or not ++pictures added++

Where can i get those super skids from, lol i have the exact same problem you had and when i get it fix i aint going to let it happen again

40 series FLOWS!!!!!!!
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post #18 of 21 (permalink) Old 12-08-2008, 03:16 PM
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Re: oil pan removal, easy or not ++pictures added++

Dang that sounds like a pain in the butt.. I think I just might have welded a patch on it and said F-It... It looked like your pie plate patch was working well. I would have left it and took it to the dealer for an oil change...
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post #19 of 21 (permalink) Old 12-08-2008, 03:45 PM
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Re: oil pan removal, easy or not ++pictures added++

Quote:
Originally Posted by jackalope
Dang that sounds like a pain in the butt.. I think I just might have welded a patch on it and said F-It... It looked like your pie plate patch was working well. I would have left it and took it to the dealer for an oil change...
lmao! oh and i think supermod sells the skids

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post #20 of 21 (permalink) Old 04-18-2009, 03:55 PM
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Re: oil pan removal, easy or not ++pictures added++

I just developed an oil leak, and it looks like the sealant between the oil pan and the block is worn or gone. A few of the front oil pan bolts were finger tight, so I tightened them up hoping that would solve the problem. Now a few days later, and the oil is still leaking...........really hate to have to go thru all this to fix the problem. I'm going to get in touch with a friend of a friend who is a GM tech and works out of his garage at a discount rate.........maybe he can do it for a lot less.

Steve

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