Question about 2003 Chevrolet Express

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I need to remove the oil pan in my 2003 chevy express 1500 and i have removed all of the bolts and it is still not coming out, it is moving a little bit but will not come out, i have removed the crank shaft sensor and transmission cover and everything in the way.

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  • Chevrolet Master
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Smack it with a rubber hammer! that way you will not bend or damage the oil pan

Posted on Apr 27, 2010

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Posted on Jan 02, 2017

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1 Answer

How to remove oil pan in 2003 chevy silverado 2500 hd


You most certainly have to remove the motor mount bolts and jack up the engine to remove it. If exhaust passes under the pan you will need to remove it also.
Also unbolt the fan shroud as it has to move with the fan as you jack up the motor to clear the cross member.

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Where is the oil pan drain bolt on a 2003 6 cylinder Chevy Silverado, and what size is the bolt? Thank you.


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Sep 25, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Remove oil pan


Find your oil pan's drain plug -- it just looks like a bolt from the outside. Use this to drain the oil from your vehicle first (keeps you from getting covered in oil later). Once the oil has drained out (usually it will still be dripping, but that's OK) put the plug back in so you won't get dripped on. Then find all of the bolts around the pan that you just drained -- there should be several around the top of the oil pan connecting it to the engine. Once you have removed all of these bolts, the oil pan should come off relatively easily -- most times it gets a little stuck to the oil pan seal, so you might have to pull on it a little, or if it's really stuck, you might have to pry it off (be careful not to damage the oil pan when doing this). If you notice that the oil pan is REALLY stuck on there, make sure you got ALL of the bolts (if you miss one the pan will not move).
Once the oil pan is off the car, and you have done what you need to do, clean the surfaces where the oil pan will connect back to the car -- making certain that the old gasket has been totally removed (leaving debris from the old oil pan seal will keep the new seal from functioning correctly. When you go to put the pan back on the car, make sure you have the oil pan seal set perfectly where it is supposed to go, then hand tighten the bolts back where they should be. Don't tighten all of the bolts down quite yet.
Check to make sure that the oil pan seal has not moved out of place, then tighten one bolt, but not ALL the way tight yet. Once you have one bold mostly tightened with your wrench, start tightening the bolt on the opposite side of the pan from the first one you just tightened -- and make this one about as tight as the first one. Next, double check that the seal has not moved, and then tighten a bolt on a 90 degree angle from your first two. Next, do the bolt opposite the third. Work on one bolt at a time, making sure that you don't tighten two bolts next to each other in a row. This will help you make sure you do not move or distort your oil pan seal as you are replacing the oil pan. I don't know the exact number of bolts, but if you follow the pattern from the diagram below as much as you can, you should not have too many problems. Once all of the bolts have been wrench tightened in this order (or similar depending on how many bolts there are, and their placement) go around the pan one more time, making sure that all of the bolts are nice and snug and you should be just about done -- don't forget to put more oil in the car before you turn it on :-)
Bolt Tightening to keep pan seal from slipping out of place:
1 ----- 9 ----- 6 -----4 ' ' 7 8 ' ' 3 ----- 5 ---- 10 --- 2

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1 Answer

I need to remove the oil pan of my 2003 chevy express 1500 i have removed all of the bolts but it is not coming out


Make sure you have all bolts out. Then gently pry around the edges with as wide a bladed flat screwdriver as you can find. Is this a steel pan, or a cast aluminum pan?

In any case do not apply very much force in one area, or you risk warping/breaking something.

May 17, 2010 | Cars & Trucks

1 Answer

How to replace a oil pump


Probably a 3 out of 5 on my diy difficulty scale, here goes: 1 remove negative battery cable 2 raise and support the van on jack stands 3 remove the motor mount bolts from both sides( do not worry the engine will not fall on you) 4 remove the oil pan retaining bolts 5 unplug oil level sensor if equipped 6 bump oil pan with a RUBBER mallet to break the gasket seal 7 remove oil pan, you might have to raise the engine with a jack placed under the front pulley, use a block of wood to avoid marring the pulley, and raise the engine just enough to allow the oil pan to slip out. 8 remove the oil pump retaining bolt and allow the pump to come straight down. 9 you will have to re use the intermediate shaft, the collar that holds it on will most likely break when you try to remove it, you can get a new one, it will probably come with the new oil pump. You can reuse the oil pump pickup tube, but it is cheap insurance to replace it. reassemble in reverse order, pay attention to the oil pan gasket, be careful and get the corners in correctly, extra time spent here will prevent a leak later.

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3 Answers

How do i drop the oil pan in my 2003 chevy cavalier i have all the bolts removed!


make sure you drain the oil!
Take a flat screw driver and gently hammer it into the gasket area where the bolts were from the flat area all around the pan,then pull it down.

Aug 17, 2009 | 2003 Chevrolet Cavalier

1 Answer

Replac 2003 monte carlo oil pan gasket


To remove the oil pan on any vehicle, first remove anything obviously in your way...starter, exhaust pipe etc. Then disconnect the engine mounts and raise engine to gain sufficient clearance between frame and pan. You cannot support the engine from under the pan so either use a fixture above the engine or put blocks between mounts and engine to support it. After all rail bolts have been removed, remember that the oil pump pickup will interfere with removal somewhat but pan can be maneuvered around it. Anything preventing you from getting the pan out will then need to be removed or moved as they are identified. Be careful when raising the engine that you do not break anything above it as it comes up.

Jun 09, 2009 | 2003 Chevrolet Monte Carlo

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