🔧 Grand Cherokee - Transmission Fluid & Filter Service

This service replaces the fluid in the transmission pan and the internal filter. It helps restore shift quality and protects the transmission by removing worn-out fluid and trapped debris.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• ⚠️ Work on a level surface and support the SUV with jack stands before going underneath.
• ⚠️ Transmission fluid can be hot; let it cool or wear gloves and long sleeves.
• ⚠️ Keep the vehicle level during refill/check or your fluid level will be wrong.
• ⚠️ Use only ATF+4 fluid; using other ATF can cause shifting problems.
• ⚠️ No battery disconnect is required for this service.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• Drain pan (10-quart minimum)
• 1/4-inch drive ratchet
• 3/8-inch drive ratchet
• Metric socket set (8mm-13mm)
• Torque wrench (inch-pound or low-range Nm)
• Torx bit set (T25-T30)
• Plastic trim scraper
• Brake cleaner spray
• Shop towels
• Long-neck funnel

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Automatic transmission filter - Qty: 1
• Transmission pan gasket - Qty: 1
• Automatic transmission fluid (ATF+4) - Qty: 6 quarts

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📋 Before You Begin

• Park on level ground, set the parking brake, and place wheel chocks behind the rear tires.
• Warm the transmission slightly with a 5-10 minute drive, then shut it off. Warm drains faster than cold.
• Raise the front and support with jack stands. Keep the SUV as level as possible (front and rear at similar height).
• Clean around the pan area with shop towels so dirt doesn’t fall inside.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Verify which fill method you have

• Open the hood and look for a transmission dipstick tube (a tube with a cap, usually labeled for transmission).
• If you have a dipstick tube: you’ll refill through it using a long-neck funnel.
• If you do NOT have a dipstick tube: stop here and tell me “no dipstick” (that version requires a different fill/check procedure).

Step 2: Position the drain pan and loosen the transmission pan

• Place a drain pan (10-quart minimum) under the transmission pan.
• Use a 1/4-inch drive ratchet with the correctly-fitting socket from your metric socket set (8mm-13mm) to loosen the pan bolts.
• Loosen bolts around the pan evenly, leaving a couple bolts threaded on one end so the pan can tilt and drain.

Step 3: Drain the fluid and remove the pan

• Carefully tilt the pan down on one side and let the fluid pour into the drain pan.
• Once the flow slows, support the pan with one hand and remove the remaining bolts using the ratchet and socket.
• Lower the pan slowly; more fluid will spill when it comes down.

Step 4: Remove and replace the transmission filter

• Locate the filter on the valve body (it’s the plastic/metal pickup in the bottom of the transmission).
• Remove the filter fasteners using a Torx bit (T25-T30) and 3/8-inch drive ratchet.
• Pull the old filter straight down. Make sure the old filter seal/O-ring comes out with it (don’t leave it stuck up in the transmission).
• Install the new filter and tighten the fasteners using a torque wrench: Torque to 4 Nm (35 in-lb).

Step 5: Clean the pan, magnet, and gasket surfaces

• Dump remaining fluid from the pan into the drain pan.
• Remove the magnet(s) from the pan, wipe off sludge with shop towels, then reinstall the magnet(s) in the same spot.
• Clean the pan and gasket surface using brake cleaner spray and a plastic trim scraper.
• Install the new pan gasket onto the pan.

Step 6: Reinstall the pan

• Lift the pan into place and start all bolts by hand.
• Snug bolts evenly in a crisscross pattern using a ratchet and socket.
• Final-tighten with a torque wrench: Torque to 13 Nm (115 in-lb).
• Overtightening can warp the pan and cause leaks.

Step 7: Refill with ATF+4

• Lower the SUV from the jack stands using the floor jack.
• Insert a long-neck funnel into the transmission dipstick tube.
• Add ATF+4 in small amounts (start with about 4 quarts).

Step 8: Set the fluid level (critical)

• Start the engine and keep your foot on the brake.
• Shift slowly through P-R-N-D and back to P, pausing 2-3 seconds in each gear to fill passages and the filter.
• With the engine idling on level ground, check the dipstick and add ATF+4 as needed.
• Recheck until the level is correct on the dipstick’s operating range. Add fluid gradually (a little goes a long way).

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✅ After Repair

• Inspect for leaks around the pan with the engine running.
• Take a short test drive, then park on level ground and recheck the dipstick level.
• Dispose of used ATF at a recycling center or parts store that accepts used fluids.

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💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $60-$140 (parts only)

You Save: $190-$310 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.

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🎯 Ready to get started?

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