Question about 2003 Chevrolet Silverado 1500

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How to remove the oil pan for access to the oil pump on a 2003 silverado 5.3 l engine, 4WD

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  • Don Ray
    Don Ray Jul 26, 2010

    I feel (hope) that the problem is a blockage at the screen before the oil pump. If I remove the oil filter and blast the opening with air pressure, would the air pressure get to and past the pump and possibly remove the blockage? I'm thinking that might have to puncture the oil filter with a hole to fit the air gun to allow the full air pressure to hit the oil pump. What do you think?

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Place a jack with a block of wood on it under the oil pan, and loosen the engine mounts, on either side of the motor. Once those are loose, jack the engine up a few inches (10 or so, if you can), and get out from under the truck.

Lay blankets on either fender, and lay a 2x4 or 4x4 across the engine bay. Wrap a chain or strap around it several times, and connect it to any 2 points on the engine on opposite sides, to support the engine so you can remove the jack.

Drain the oil from the vehicle, using the oil pan's drain bolt. Remove the bolts all the way around the pan, and tap the sides of it with a rubber mallet or piece of wood to release the gasket seal. It will fall.

Installation is the reverse with a new gasket. Be sure to put gasket sealer in any sharp corners and clean the pan thoroughly while it's out.

You should also take this time to check for damage or wear on the bottom end of the engine, including metal shavings or sparkles/flecks in the oil pan.

Posted on Jul 22, 2010

Testimonial: "Thanks so much. I'll try that tomorrow. "

  • Christ Pettitt Jul 26, 2010

    The air pressure won't leak past the pump because the pump creates a seal in more areas than it's open volume. If you blast air through the oil filter hole, you'll clear oil from the bearings - not a good idea.

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This Depends on a 2 Details, ENGINE Size 4by4 or NOT. Most are Fairly Simple Once the Oil Pan has been Removed and the OIL PAN is Normaly the HARDEST Part of it

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  1. Attach the pan gasket to the oil pan with Hi-tack or equivalent (2003-2005 vheicles).
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