How much is it to replace the rear main seal on a 2007 Hummer H3

How much is it to replace the rear main seal

My car has 140000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hello. It is common for the rear main seal to leak on this engine. Over time the seal fails and this occurs. You will need to take this to a shop that can remove the transmission to change the seal out.

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Some estimates put the cost at around $350-$450 for labor alone. However, this cost can vary depending on the make and model of your vehicle, as well as your location and the specific shop you take it to.
A rear main seal leak can be a major problem for your vehicle. It can result in serious damage to your car`s engine, which is why it`s important to have it repaired as soon as possible. If you think the oil level is too low, you should stop driving the vehicle.
It`s a very important seal since it is so low on the engine a significant amount of oil can quickly leak from it, allowing your engine oil levels to get dangerously low before you have time to add more oil. That`s why, if yours is faulty, a rear main seal leak fix should be at the top of your to-do list.
If the seal is badly worn, it can cause a fast oil leak, quickly draining the reservoir. This can lead to severe internal engine failures and expensive repairs. More commonly, the rear main seal tends to deteriorate over time and will usually start as just a small oil leak that gets gradually larger.
The complexity of the job

Since many vehicle manufacturers have different ways of installing the rear main seal as well as the transmission, independent shops have to charge a little more for the job as each rear main seal will be a little different.

The main symptom of a rear seal leak is when your car starts leaking engine oil at a faster rate. If your vehicle has started leaving black puddles on your driveway or parking lot, something is definitely wrong with the situation underneath the vehicle.
To prevent future leaks and for outstanding preventive maintenance, install Rear Main Seal Repair every 5,000 miles or with every oil change.
Since rear main seal leaks are uncommon on most vehicles it`s very possible that you`ve got another leak higher up on the motor that is dripping down and just looks like a rear main seal leak.
Its` Hard. Replacing a rear main seal is time consuming, requires special knowledge of your vehicle and the use of special tools if you are going to do it correctly and without placing you or your vehicle in danger.
Since it is such a difficult repair, it`s usually not something you can do yourself and your mechanic has to charge a lot for. Replacing a rear main seal can be so expensive the cost to replace it may be more than you have to spend, or even more than your vehicle is worth.
To remove the rear main seal, you must remove the transmission from the engine, remove the flywheel from the crank shaft, removed the oil pan and in most motors removed the pistons and crank shaft as well.

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ANSWER : Hello. It is common for the rear main seal to leak on this engine. Over time the seal fails and this occurs. You will need to take this to a shop that can remove the transmission to change the seal out.

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