Replacing oil pan gasget on my 91 chevy C1500 5.7 auto. Do I have to lift engine? Do I have to remove tranny shield. Already putting new starter on it.

REMOVAL PROCEDURE

1. Remove the oil level indicator tube.
2. Raise the vehicle.
3. Remove the engine oil and the engine oil filter.
4. Remove the oil filter adapter.
5. Remove the starter.
6. Remove the flywheel inspection cover.
7. Remove the engine mount through bolts.
8. Raise and support the engine.

1. Remove the oil pan nuts and bolts. Note the location of any studs to assist reassembly.
2. Remove the engine oil pan and the gasket.
3. Clean all sealing surfaces. Refer to Oil Pan Clean and Inspect under Engine Unit Repair.

INSTALLATION PROCEDURE

1. Install the engine oil pan and a NEW gasket. Refer to Oil Pan Installation under Engine Unit Repair.
2. Lower the engine onto the mounts.
3. Install the engine mount through-bolts.
4. Install the starter.
5. Install the flywheel inspection cover.
6. Install the engine oil filter and the engine oil.
7. Install the oil filter adapter.
8. Install the oil level indicator tube.

the 2.2 engine and the 4.3 engine with 2WD MODEL you have to remove engine.the 4WD MODELS, you have to remove all these parts first remove dip stick, drive belt, splash shield, remove front axle shield and the transfer case shield, front skid plate and the flywheel cover,remove left and right engine mount through bolts.then raise the engine using a lifting device, and block in position,using large wooden blocks between the motor mounts and brackets.you will also need to remove these parts,remove disconnect oil cooler line, remove pitman aem bolt and pitman arm, remove idler arm bolts and idler arm, remove front differential through bolts,remove front driveshaft if necessary,remove differential assembly by rolling it forward for clearance, remove starter motor, then remove oil pan bolts then remove oil pan, your oil pan need to be flushed slightly forward of rear of the block to allow proper alignment with the transmission housing.using feeler gauge measure the 3 oil pan to transmission contact points.clearance should not exceed 0.011 in. 0.3mm if so realign the oil pan.oil pan bolts torque is 18 ft lbs tighten oil pan bolts in sequence.

Removal & Installation

2.4L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Structural collar A/C compressor bracket to oil pan bolt Oil pan
   
4. Clean the oil pan and all gasket mating surfaces.

To install:

1. Install or connect the following:
   
   Oil pan gasket to the block after applying engine RTV at the oil pump parting line Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Structural collar Negative battery cable
   
2. Fill the crankcase to the correct level.
3. Start the engine, check for leaks and repair if necessary.

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Structural collar A/C compressor bracket to oil pan bolt Oil pan
   
4. Clean the oil pan and all gasket mating surfaces.

To install:

1. Install or connect the following:
   
   Oil pan gasket to the block after applying engine RTV at the oil pump parting line Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Structural collar Negative battery cable
   
2. Fill the crankcase to the correct level.
3. Start the engine, check for leaks and repair if necessary.

3.0L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Starter motor Front motor mount bracket Bending braces Torque converter dust shield Oil pan
   
   

   Fig. Oil pan mounting bolt tightening sequence-3.0L engine
   
   

To install:

1. Clean the oil pan all mating surfaces.
2. Apply RTV gasket material to the oil pan.
3. Install or connect the following:
   
   Oil pan. Tighten the bolts in sequence to 50 inch lbs. (6 Nm). Torque converter dust shield Bending braces Front motor mount bracket Starter motor Negative battery cable
   
4. Fill the crankcase to the correct level.
5. Start the engine, check for leaks and repair if necessary.

3.3L & 3.8L Engines

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Engine oil dipstick Drive belt splash shield Strut to transaxle attaching bolt and loosen the strut to engine attaching bolts Transaxle case cover Oil pan fasteners Oil pan and gasket
   

To install:

1. Clean the oil pan and all mating surfaces.
2. Apply a 1 / 8 inch bead of gasket material at the parting line of the chain case cover and the real seal retainer.
3. Install or connect the following:
   
   New gasket on the oil pan Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Transaxle case cover All bending brace bolts Drive belt splash shield Engine oil dipstick Negative battery cable
   
4. Fill the crankcase to the correct level.
5. Start the engine, check for leaks and repair if necessary.

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   
   Negative battery cable Engine oil dipstick Drive belt splash shield Strut to transaxle attaching bolt and loosen the strut to engine attaching bolts Transaxle case cover Oil pan fasteners Oil pan and gasket
   

To install:

1. Clean the oil pan and all mating surfaces.
2. Apply a 1 / 8 inch bead of gasket material at the parting line of the chain case cover and the real seal retainer.
3. Install or connect the following:
   
   New gasket on the oil pan Oil pan. Torque the bolts to 105 inch lbs. (12 Nm). Transaxle case cover All bending brace bolts Drive belt splash shield Engine oil dipstick Negative battery cable
   
4. Fill the crankcase to the correct level.
5. Start the engine, check for leaks and repair if necessary.

Oil Pan, Ranger SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Engine Lifting Sling 014-00036
Removal

1. Disconnect battery ground cable. For additional information, refer to Section 14-01.

1. Remove air cleaner outlet tube assembly by unclipping air cleaner clamp, loosening hose clamp at outlet tube, disconnecting intake air temperature (IAT) sensor and mass air flow (MAF) sensor connectors, and crankcase ventilation hose.

1. Remove oil level indicator fan shroud retaining bolts. Position shroud over fan blade.

1. Remove radiator support bolts. Raise and secure radiator to front core support.

1. Remove engine mount nuts from studs.

1. Unclip 42-pin connector from bracket and position it aside.

1. Install suitable lifting brackets to left and right exhaust manifolds. Attach Rotunda Engine Lifting Sling 014-00036 (or equivalent) to lifting brackets. With a suitable lifting device raise engine approximately 50.8 mm (2 in). Install wood blocks between engine mounts and support brackets. Remove lifting device.

1. Raise vehicle on hoist. For additional information, refer to Section 00-02.

1. Drain the oil.

1. Remove transmission insulator retaining nuts and install a jack stand to extension housing. Raise transmission about 25.4-101.6mm (1-4 in) to gain access for removal of oil pan.

1. Remove transmission inspection cover.

1. Remove starter motor splash shield.

1. Remove starter motor retaining bolts and secure starter aside.

1. If equipped, disconnect and remove low oil level sensor.

1. NOTE: Oil pan fits tightly between transmission spacer plate and oil pump pickup tube. Use care when removing pan to avoid damaging either part.
   Remove oil pan bolts and lower pan.

1. Remove oil pump retaining bolts. Lower and twist pump to allow the oil pan to lower completely. Remove the pump and pan assembly from vehicle.

1. Remove and discard oil pan gasket.

1. Clean the oil pan mating surface.

Installation

1. NOTE: When using silicone rubber sealer, assembly should occur within 15 minutes after sealer application. After this time, the sealer may start to set up, and its sealing effectiveness could be reduced.
   Apply a 4.0-6.0 mm (1/5 inch) bead of Silicone Rubber D6AZ-19562-AA or -BA (or equivalent meeting Ford specifications ESB-M4G92-A and ESE-M4G195-A) to junction of rear main bearing cap and cylinder block and to junction of front cover assembly and cylinder block. Position oil pan gasket to cylinder block and secure it with Gasket and Trim Adhesive D7AZ-19B508-B (or equivalent meeting Ford specifications ESR-M11P17-A and ESE-M2G52-A).

1. Install oil pump assembly and bolt. Tighten bolt to 40-55 Nm (30-40 lb-ft).

1. NOTE: If oil pan is replaced with a new pan you must tighten new pan to spec then loosen and retighten.
   Position oil pan to cylinder block and install oil pan to engine bolts. Tighten bolts to 10-14 Nm (7-10 lb-ft).

1. Remove jack stand and install transmission insulator retaining nuts. Tighten nuts to 85-118 Nm (63-87 lb-ft).

1. NOTE: When replacing low oil level sensor, use a new metal gasket with a rubber O-ring.
   Install low oil level sensor. Tighten sensor to 20-34 Nm (15-25 lb-ft).

1. Install transmission inspection cover and retaining bolts. Tighten bolts to 10-14 Nm (7-10 lb-ft).

1. Install starter motor and bolts. Tighten bolts to 22-28 Nm (17-20 lb-ft).

1. Securely install starter motor splash shield.

1. Lower vehicle.

1. Install lifting device and support engine. Remove wood blocks and lower engine back into original position. Remove lifting device and Rotunda Engine Lifting Sling 014-00036 (or equivalent). Remove lifting brackets from right and left exhaust manifolds.

1. Remove support straps, lower radiator into position, and install radiator bolts to core support. Position fan shroud and install the retaining bolts. Tighten bolts to 6-8 Nm (52-71 lb-in).

1. Install engine mount nuts and tighten to 98-132 Nm (72-97 lb-ft).

1. Connect 42-pin connector to the bracket and install oil level indicator.

1. Install engine air cleaner outlet tube assembly. Connect IAT sensor, MAF sensor, and crankcase ventilation hose. Securely tighten the hose clamp.

1. NOTE: When battery has been disconnected and reconnected, some abnormal drive symptoms can occur while powertrain control module (PCM) (12A650) relearns its adaptive strategy. Vehicle may need to be driven 16 km (10 miles) or more to relearn strategy.
   Connect battery ground cable.

1. Fill crankcase with correct viscosity and amount of engine oil.

1. Start engine and check for oil leaks.
   
   Oil Pan Installation - Ranger
   
   
   
   
   
   Hope this helps

3.8L Engine

1. Disconnect the negative battery cable.
   
2. Remove the air cleaner outlet tube.
   
3. Unfasten the two bolts retaining the radiator upper sight shield, then position the shield aside.
   
4. Remove the hood weather seal.
   
5. Remove the wiper pivot arms.
   
6. Remove the LH cowl vent screen and wiper module.
   
7. On SC engines, remove intercooler/charge air cooler tubes.
   
8. Install a Three Bar Engine Lifting Support D88L-6000-A or equivalent.
   
9. Raise and safely support the vehicle.
   
10. Remove the front engine support insulator through bolt. On SC, also remove the LH front engine support/mount retaining strap bolt.
    
11. Partially lower the vehicle. Raise the engine with the lifting support tool.
    
12. Raise and safely support the vehicle. Remove the starter motor assembly.
    
13. Position a drain pan, drain the engine oil, and remove the oil filter.
    
14. Remove the starter motor wire, ground strap and oil cooler inlet tube (automatic transmission only).
    
15. Unfasten the oil pan-to-bell housing bolts and Crankshaft Position (CKP) sensor lower shield retaining bolts (if equipped).
    
16. Remove the remaining oil pan retaining bolts.
    
17. Remove the steering shaft pinch bolts and separate the steering shaft.
    
18. Position a transmission jack under the front of the front subframe. Remove the six rearward bolts on the front of subframe, then loosen the two forward subframe bolts.
    
19. Remove the lower shock absorber-to-control arm bolts and nuts (both sides).
    
20. Lower the front subframe.
    
21. Remove the oil pan and empty any residual oil from the pan.
    

To install:

1. Clean mating surfaces of the oil pan and cylinder block. Take great care to avoid damaging the machined surfaces!
   
2. Apply a bead of RTV silicone gasket sealer to the oil pan.
   
3. Fit the oil pan to block to ensure enough clearance has been provided to allow the oil pan to be installed without the sealant being scraped off, under the cylinder block assembly.
   
4. Install the oil pan retaining bolts at the cylinder block, bell housing and install the lower crankshaft sensor shield (if equipped). Tighten to 80-106 inch lbs. (9-12 Nm).
   
5. Raise subframe into position.
   
6. Install the lower shock absorber-to-front suspension lower arm bolts. Tighten to 103-144 ft. lbs. (140-195 Nm).
   
7. Install the two forward front sub-frame bolts and six bolts at the rear of the subframe.
   
8. Connect the steering column input shaft coupling, install the pinch bolt and tighten to 30-42 ft. lbs. (41-57 Nm).
   
9. If equipped with an automatic transaxle, install the oil cooler inlet tube and the oil cooler tube, the starter wire harness and the ground strap.
   
10. Install oil filter.
    
11. Partially lower the vehicle.
    
12. Carefully lower the engine with the engine support, seating the LH side locating pin before the RH side. Install the engine mount through bolts, (on SC engines, install LH mount retaining strap bolt), and tighten to 34-44 ft. lbs. (45-61 Nm).
    
13. Remove the engine support and lifting eyes, or equivalent. Carefully lower the vehicle.
    
14. On SC engines, install the intercooler/charge air cooler tubes.
    
15. Install the wiper module, the LH cowl vent screen and the left and right side wipers.
    
16. Install the hood weather seal.
    
17. Install the radiator upper sight shield and secure with the two retaining bolts.
    
18. Install the air cleaner outlet tube assembly.
    
19. Refill the engine crankcase with appropriate type and quantity of engine oil.
    
20. Connect the negative battery cable. Start the engine and check for leaks.
    
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Step 1 Raise the truck using the proper equipment. Use a ramp or a jack and jack stands to support the vehicle securely by following all directions for use provided by this equipment's manufacturer.

Step 2 Drain all oil from the Silverado by placing an oil drip pan under the vehicle's engine block, directly under the oil drain plug. The drain plug is located on the oil pan, between the vehicle's tires underneath the vehicle. Use a wrench to loosen and remove the plug allowing the oil to drain into the pain below.

Step 3 Notice the various items attached to the oil pan or in the way of the oil pan dropping. For the oil pan to drop, remove the negative battery cable, front differential (only for four-wheel drive vehicles) and the under body shield by using a wrench or socket set.

Step 4 Remove the oil pan shield by loosening the four bolts holding it in place along the edges of the shield. Then, remove the cross brace, oil filter, the transmission to oil pan bolts and the oil level sensor.

Step 5 Follow the removal of those pieces by removing the bolts from the two front wiring harness, the engine wiring harness retainer, engine oil cooler pipe to oil bolts and the transmission oil cooler pipe retainer using a wrench. Located the closeout covers and bolts located on each side of the engine and remove them.

Step 6 Disconnect each of the oil pan bolts using a wrench that will allow the oil pan to drop. The oil pan gasket will also fall off and replacement should occur before reinstalling the oil pan.

Read more: How to Drop the Oil Pan in a Chevy Silverado | eHow.com http://www.ehow.com/how_4508109_drop-oil-pan-chevy-silverado.html#ixzz0wi82Ul2u

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Cavalier, Sunfire 2001-2005

Oil Pan - Removal & Installation

2.2L (VIN 4) Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   Negative battery cable Right front wheel Right inner fender splash shield Starter motor and bracket Engine mount strut bracket Oil pan

To install:




Fig. Exploded view of the oil pan mounting and related components-2.2L (VIN 4) engine

1. Place a 2mm bead of RTV sealer to the oil pan sealing surface except at the rear seal mounting surface. Using a new oil pan rear seal, apply a thin coat of RTV sealer on the end down to the ears.
2. Install or connect the following:
   Oil pan with a new gasket. Torque the nuts and bolts to 89 inch lbs. (10 Nm). Engine mount strut bracket. Torque the bolts to 49 ft. lbs. (66 Nm). Starter motor and bracket. Torque the bolts to 37 ft. lbs. (50 Nm). Right fender splash shield Right front wheel. Torque the nuts to 100 ft. lbs. (140 Nm). Negative battery cable
3. Refill the crankcase.
4. Start the vehicle and verify no leaks.

2.2L (VIN F) Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Remove or disconnect the following:
   Engine mount strut bracket Drive belt Lower then upper AC compressor bolts Oil pan bolts Oil pan
   
   
   
   Fig. Remove/Install the oil pan bolts in this sequence-2.2L (VIN F) engine
   

To install:

1. Apply a 2 mm bead of RTV sealant around the perimeter of the oil pan and the oil suction port opening. Do not over apply the RTV. More than a 2 mm bead is not required.
2. Install or connect the following:
   Oil pan and tighten the bolts to 18 ft. lbs. (25 Nm) AC compressor bolts Engine mount bracket Drive belt
   
3. Refill the crankcase.
4. Start the vehicle and verify no leaks.

2.4L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Drain the engine oil.
3. Drain the cooling system.
4. Remove or disconnect the following:
   Negative battery cable Flywheel/converter cover Right wheel Right wheel well splash shield Accessory drive belt Air conditioning compressor lower bolts Transmission-to-engine brace Engine mount strut bracket Radiator outlet pipe bolts Radiator outlet pipe from the oil pan Oil pan to the flywheel cover bolt and nut Flywheel cover stud for clearance Radiator outlet pipe from the lower radiator hose and oil pan Oil level sensor connector Oil pan

To install:

1. Inspect the oil pan gasket; it is reusable if not damaged.
2. Install or connect the following:
   Oil pan with the gasket. Torque the M8 bolts to 18 ft. lbs. (24 Nm) and the M6 bolts to 106 inch lbs. (12 Nm).
   
   
   
   Fig. Oil pan fastener torque specifications-2.4L engine
   Oil pan to the transmission nut Oil level sensor connector Radiator outlet pipe to the lower radiator hose and oil pan Exhaust manifold brace Radiator outlet pipe. Torque the bolts to 124 inch lbs. (14 Nm). Engine mount strut bracket. Torque the bolts to 55 ft. lbs. (75 Nm). Transmission to the engine brace Air conditioning compressor lower bolts. Torque the bolts to 37 ft. lbs. (50 Nm). Accessory drive belt Right splash shield Right front wheel Flywheel/converter cover Negative battery cable
3. Refill the crankcase.
4. Refill the cooling system.
5. Start the vehicle and verify no leaks.

Hope helped (remember rated this help). Good luck.

You should be able to drop the front drive and pull the starter you should be able to drop the oil-pan without to much trouble

put car on stands

remove right side engine splash shield

remove exhaust shield

remove AC brace at starter/ compressor bracket

remove flywheel inspection plate

remove engine mount strut, remove bolts from bracket. Lower the bracket slightly to gain clearance to remove pan.

remove oil filter extension (auto trans. only)

remove all pan bolts

tap pan with rubber hammer to break old gasket loose from block.

clean all used gasket off and install is reverse

This is quite a chore, you have to lift the engine to do it:

From AutoZone...

Disconnect the negative battery cable.

Remove the water pump pulley shield.

Install engine support device to the engine lifting eyes and support the engine.

Raise and safely support the vehicle.


Remove the exhaust crossover and the exhaust retaining bracket located on the right side of the oil pan.

Remove the exhaust heat shield retaining nuts and the exhaust heat shields from the left side of the oil pan.