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Holden Colorado/Rodeo 2007-2012 factory workshop and repair manual download

- Safety first
- Wear safety glasses, nitrile gloves, and long sleeves to protect from hot fluid and solvent.
- Do not work under a car supported only by a jack — always use rated jack stands on a flat surface and chock wheels.
- Let the vehicle reach operating temperature then allow transmission fluid to cool to warm (not boiling) before draining.
- Dispose of used transmission fluid at a recycling center — do not pour it down drains.

- Parts you will likely need and why
- Transmission pan gasket (paper/rubber or solid molded gasket) — required because the old gasket is compressed/damaged and will leak if reused.
- Transmission filter (if the model has an internal filter) — recommended replacement whenever the pan is dropped because the filter catches debris and is inexpensive.
- Transmission fluid (correct spec for your Holden Colorado/Rodeo) — needed because draining the pan removes fluid; use the manufacturer-specified type and the amount listed in the manual.
- Crush washer or seal for any drain/fill plug (if applicable) — replace if the vehicle uses a one-time washer to prevent leaks.
- Optional: new pan bolts or washers if original bolts are corroded or threads damaged.

- Tools required (each tool described with how to use it)
- Hydraulic jack (floor jack)
- Purpose: lifts the vehicle.
- How to use: place on a flat surface, position the jack under the manufacturer jacking point, pump handle to lift vehicle high enough to fit jack stands. Do not crawl under vehicle with only the jack.
- Jack stands (two, rated for vehicle weight)
- Purpose: safely support the vehicle while you work under it.
- How to use: place under proper support points, lower the vehicle onto stands slowly, ensure stands are locked and vehicle stable before crawling underneath.
- Wheel chocks
- Purpose: prevent vehicle from rolling.
- How to use: place behind and/or in front of at least one wheel on the ground while lifting the other end.
- Socket set (metric) and ratchet
- Purpose: remove pan bolts and filter bolts.
- How to use: select the socket that fits snugly on the bolt head, use the ratchet to break loose and remove bolts; keep bolts organized.
- Extension bars and universal joint (swivel)
- Purpose: reach bolts recessed or at an angle.
- How to use: attach extension to ratchet and socket to reach confined bolts; the universal joint lets you access awkward angles.
- Torque wrench (click-type)
- Purpose: tighten bolts to correct torque to avoid leaks or damaged threads.
- How to use: set the wrench to the specified torque (see service manual), tighten bolts in an even pattern until the wrench clicks.
- Drain pan / fluid catch container (large, shallow)
- Purpose: catch drained transmission fluid.
- How to use: slide under pan before loosening bolts; empty fluid into sealed containers for recycling.
- Gasket scraper or plastic scraper / brass putty knife
- Purpose: remove old gasket material without damaging mating surfaces.
- How to use: gently scrape away old gasket material until surface is clean and flat; avoid steel scrapers on aluminum surfaces to prevent gouging.
- Clean rags and lint-free cloths
- Purpose: wipe surfaces dry and clean.
- How to use: use solvent as needed, then wipe until dry and oil-free.
- Brake cleaner or solvent-safe degreaser
- Purpose: clean mating surfaces of grease and old gasket residue.
- How to use: spray on surface, wipe with clean rag; allow to evaporate fully.
- Rubber/plastic mallet (optional)
- Purpose: break a stuck pan seal without deforming metal.
- How to use: tap pan gently along edges to loosen; do not hit hard.
- Gasket sealant/RTV (only if specified by gasket manufacturer or service manual)
- Purpose: used only if the manual calls for a dab at corners or a specific RTV gasket.
- How to use: apply sparingly only where instructed; many gasket kits are direct-fit and require no sealant.
- Magnet or screwdrivers for inspection
- Purpose: check and collect metal filings inside pan.
- How to use: run magnet over pan interior or wipe with cloth to see amount of metal debris; large chunks indicate serious wear.
- Funnel and long-pour spout or fluid pump
- Purpose: refill transmission with correct fluid cleanly.
- How to use: use funnel into dipstick tube or fill plug; use a hand pump if the fill point is high.

- Extra tools that might be required and why
- Penetrating oil (PB Blaster, WD-40 Specialist) — if bolts are rusty/seized.
- Impact wrench (optional) — speeds bolt removal but be careful not to strip bolts; use by experienced users.
- Pan gasket remover kit or gasket solvent — for stubborn old gasket residue.
- A small mirror and flashlight — to inspect filter seating area and bolt threads.
- Digital camera or phone — take photos during disassembly to help reassembly.

- Step-by-step procedure (for beginners; follow every safety note)
- Prepare vehicle
- Park on level ground, engage parking brake, chock wheels.
- Warm engine briefly to make fluid warm (not hot), then shut off engine.
- Lift vehicle with jack at manufacturer jacking point and secure on jack stands; ensure stable.
- Position drain pan and loosen bolts
- Slide drain pan under transmission pan.
- Loosen pan bolts around the perimeter a few turns but do not remove them all at once to control fluid flow.
- If there is a separate drain plug, remove it first to drain fluid more slowly into the pan.
- Drain fluid and remove pan
- Carefully remove bolts on one side to tip the pan down and let fluid drain into catch.
- Remove remaining bolts and lower pan; be ready to support the pan — it will contain fluid and possibly a magnet with debris.
- Inspect and clean pan
- Inspect pan interior for metal particles and sludge. Small fine particles are normal; large chunks or heavy scoring is a red flag — consider professional diagnosis.
- Remove magnet if present and wipe clean; note the amount of material on the magnet.
- Clean pan with solvent and a rag; remove old gasket or sealant with a plastic/brass scraper.
- Remove and inspect filter
- Remove the transmission filter (if applicable) — it may be held by bolts or simply push-fit.
- Inspect filter for large debris or metal fragments. Replace filter if it is clogged, dirty, or whenever you are servicing the pan.
- Clean mating surfaces
- Clean the transmission case flange with brake cleaner and a clean rag; ensure no old gasket remains and surface is flat and dry.
- Fit new gasket and/or filter
- Place the new filter in position and secure per instructions.
- Install the new gasket to the pan (some gaskets have an orientation). If the gasket requires RTV per instructions, apply a small dab only where specified.
- Reinstall pan and bolts
- Position the pan with new gasket onto the transmission.
- Hand-thread bolts to avoid cross-threading.
- Tighten bolts gradually and evenly in a crisscross pattern to seat the gasket.
- Finish by tightening to the manufacturer torque spec using a torque wrench. Do not overtighten — this distorts the pan and causes leaks.
- Refill fluid and check level
- Lower vehicle off stands to ground.
- Refill transmission with the specified type and approximate amount through dipstick tube or fill plug. Many vehicles require checking level with engine idling at operating temperature and selector cycled through gears — follow owner’s manual procedure.
- Start engine, let it warm, cycle through gears, and recheck level once warm and on level ground. Add small amounts as needed; overfilling can be harmful.
- Check for leaks and test drive
- With engine running and vehicle still on stands or safely on ground as required, inspect for leaks around the pan.
- After confirming no leaks, take a short test drive, then recheck fluid level and inspect for leaks again.

- How to use the most critical tools, simply
- Ratchet and sockets: fit socket fully onto bolt; pull handle toward you to break free bolt (not jerk), then spin ratchet to remove. Keep bolts organized by hole location.
- Torque wrench: set required torque, tighten bolt slowly until wrench clicks; repeat pattern for all bolts.
- Jack and jack stands: lift only at jacking point; ensure stands are under recommended frame points; gently lower onto stands and give car a tug to confirm stability.
- Gasket scraper: hold at a shallow angle, push along surface to lift flakes of gasket; stop when metal is shiny and smooth.

- When replacement parts are required and what they indicate
- Always replace the pan gasket — it is inexpensive and reused gaskets commonly leak.
- Replace the transmission filter whenever you drop the pan — it traps debris and prolongs transmission life.
- Replace drain plug crush washer if present — reused washers can leak.
- Replace pan bolts only if they are corroded, heads rounded, or threads damaged.
- If you find excessive metal chunks, scoring, or a grinding smell, do not proceed — this may indicate internal transmission damage requiring professional inspection/repair.

- Final checks and maintenance notes
- Recheck torque after the first 50–100 km of driving.
- Keep fluid type and change interval per owner manual — a pan service typically includes fluid change and filter replacement.
- If you are unsure at any point or find heavy metal debris, consult a professional mechanic — transmission repair can be complex and costly if internal damage exists.

- Disposal and environmental
- Store used fluid in sealed containers and take to an approved recycling facility or auto-parts store that accepts used oil/ATF.

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