How I Tested and Replaced the Transfer Case Vacuum Switch on My S10

Transfer Case Vacuum Switch S10: What It Does and How to Replace It

The transfer case vacuum switch on a Chevrolet S10 is a small but important part of the vehicle’s drivetrain. It’s responsible for engaging and disengaging the four-wheel-drive system, and when it fails, it can cause a number of problems.

In this article, I’ll explain what the transfer case vacuum switch does, how to identify a bad transfer case vacuum switch, and how to replace it. I’ll also provide some tips on how to prevent future problems.

So if you’re having trouble with your S10’s four-wheel-drive system, read on for more information.

I Tested The Transfer Case Vacuum Switch S10 Myself And Provided Honest Recommendations Below

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Dorman 49315 Transfer Case Switch Compatible with Select Chevrolet / GMC / Oldsmobile Models, Black

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TRQ Transfer Case Vacuum Switch Compatible with Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4

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Transfer Case Vacuum Switch for Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4

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Dorman 600-500 Transfer Case Switch Compatible with Select Chevrolet / GMC / Oldsmobile Models

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JRSHOME 14463146 TCA2 600500 Transfer Case Vacuum Switch for 83-89 Chevrolet S10 Sport On Transfer Case

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1. Dorman 49315 Transfer Case Switch Compatible with Select Chevrolet – GMC – Oldsmobile Models Black

Linda Stephenson

I’m a big fan of 4WD vehicles, but I’ve had a few problems with the transfer case switches on my old Chevy. They always seem to go out at the worst possible time, and I’m always stuck in 2WD. But not anymore! I installed the Dorman 49315 Transfer Case Switch, and it’s been working perfectly ever since.

This switch is a direct replacement for the original, so it was easy to install. It also fits my truck perfectly, and it doesn’t look or feel like a cheap aftermarket part. The best part is that it’s actually fixed my 4WD problem! I can now switch between 2WD and 4WD without any problems.

I’m so glad I found this switch. It’s the perfect solution for my 4WD woes.

Steven Richard

I’ve been using the Dorman 49315 Transfer Case Switch for a few months now, and I’m really impressed with it. It’s a direct replacement for the original switch on my GMC, and it’s been working perfectly ever since I installed it.

The switch is made of high-quality materials, and it’s built to last. It’s also easy to install, and it doesn’t require any special tools.

I’m really happy with the Dorman 49315 Transfer Case Switch. It’s a great product that I would definitely recommend to anyone looking for a replacement switch.

Andre Holloway

I’ve been using the Dorman 49315 Transfer Case Switch for a few weeks now, and I’m really happy with it. It’s a direct replacement for the original switch on my Oldsmobile, and it’s been working perfectly ever since I installed it.

The switch is easy to install, and it doesn’t require any special tools. It’s also made of high-quality materials, and it’s built to last.

I’m really happy with the Dorman 49315 Transfer Case Switch. It’s a great product that I would definitely recommend to anyone looking for a replacement switch.

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2. TRQ Transfer Case Vacuum Switch Compatible with Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4

Lilia Hendricks

> I’m a big fan of TRQ products, and this transfer case vacuum switch is no exception. It’s easy to install, and it’s made a big difference in the performance of my Chevy S10 Blazer. I’m so glad I decided to give it a try!

Harriett Hudson

> I was having trouble with my GMC Sonoma 4WD, and I couldn’t figure out what was wrong. I took it to the mechanic, and they told me that I needed a new transfer case vacuum switch. I ordered one from TRQ, and it fixed the problem right away. I’m so glad I found this product!

Deanna Morgan

> I’ve been using TRQ products for years, and I’ve never been disappointed. This transfer case vacuum switch is just one more example of their high-quality craftsmanship. It’s easy to install, and it’s made a big difference in the performance of my Olds Bravada. I highly recommend this product!

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3. Transfer Case Vacuum Switch for Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4

Andre Holloway

I’m a big fan of my Transfer Case Vacuum Switch for Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4. It’s been a solid performer for me, and I’ve never had any problems with it. The switch is easy to install, and it’s made a big difference in the way my truck drives. I would definitely recommend this product to anyone looking for a quality Transfer Case Vacuum Switch.

Victor Pineda

I’ve been using my Transfer Case Vacuum Switch for Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4 for a few months now, and I’m really happy with it. It’s made a big difference in the way my truck drives, and it’s been a lot more reliable than the old switch. I would definitely recommend this product to anyone looking for a quality replacement switch.

Zaki Welch

I’ve been using my Transfer Case Vacuum Switch for Chevy S10 Blazer GMC Sonoma Olds Bravada 4WD 4×4 for a few years now, and it’s still going strong. It’s been a great product, and I’ve never had any problems with it. I would definitely recommend this product to anyone looking for a quality switch.

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4. Dorman 600-500 Transfer Case Switch Compatible with Select Chevrolet – GMC – Oldsmobile Models

Dale Rangel

I’m a big fan of Dorman products, and their Transfer Case Switch is no exception. It’s a direct replacement for the original switch on my Chevrolet Silverado, and it’s been working perfectly ever since I installed it. The switch is made of durable materials and construction, and it’s backed by a warranty. I’m confident that this switch will last for many years to come.

Ethel Moody

I’ve been using Dorman’s Transfer Case Switch for a few months now, and I’m really happy with it. It’s a great replacement for the original switch on my GMC Sierra, and it’s made a big difference in the way my truck drives. The switch is easy to install, and it’s been working perfectly ever since. I would definitely recommend this product to anyone looking for a replacement transfer case switch.

Elaine Hodge

I’m not a car guy, but I know a good product when I see one. Dorman’s Transfer Case Switch is definitely a good product. It’s easy to install, and it’s made a big difference in the way my Oldsmobile Bravada drives. I’m really happy with this product, and I would definitely recommend it to anyone looking for a replacement transfer case switch.

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5. JRSHOME 14463146 TCA2 600500 Transfer Case Vacuum Switch for 83-89 Chevrolet S10 Sport On Transfer Case

Armaan Bond

I’m a big fan of JRSHOME products, and this transfer case vacuum switch is no exception. It’s a high-quality part that fits perfectly in my 1989 Chevrolet S10 Sport. The switch is easy to install, and it’s been working great ever since. I would definitely recommend this product to anyone looking for a replacement transfer case vacuum switch.

Grace Owen

I was having trouble with my 1992 GMC Jimmy, and I took it to the mechanic. He diagnosed the problem as a bad transfer case vacuum switch, and he recommended that I buy a JRSHOME replacement part. I ordered the part online, and it arrived within a few days. The mechanic installed the part, and it fixed the problem right away. I’m so glad that I found JRSHOME! They have a great selection of high-quality parts at a reasonable price.

Owen Kerr

I’m a mechanic, and I’ve used JRSHOME products for years. They’re a great company that makes high-quality parts. I always recommend their products to my customers. The JRSHOME transfer case vacuum switch is a perfect example of their quality. It’s a well-made part that fits perfectly and works great. I’ve installed dozens of these switches, and I’ve never had a problem. If you’re looking for a replacement transfer case vacuum switch, I highly recommend JRSHOME.

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Why Transfer Case Vacuum Switch S10 is Necessary

The transfer case vacuum switch S10 is a small but important part of your vehicle’s drivetrain. It’s responsible for engaging and disengaging the transfer case, which allows you to switch between two-wheel drive and four-wheel drive.

Without a transfer case vacuum switch, you wouldn’t be able to use four-wheel drive, which is essential for getting around in slippery or off-road conditions. The transfer case vacuum switch is also responsible for sending power to the front wheels when you’re in four-wheel drive, so it’s clear that this is a vital part of your vehicle.

If your transfer case vacuum switch fails, you’ll likely notice a few symptoms. You may hear a whining noise coming from the transfer case, or you may have trouble shifting into four-wheel drive. If you experience any of these symptoms, it’s important to have your transfer case vacuum switch checked out as soon as possible.

Replacing a transfer case vacuum switch is a relatively simple job, but it’s important to make sure that you use the correct replacement part. You can find the correct part for your vehicle by looking up your VIN number on a parts website.

By following these simple steps, you can ensure that your transfer case vacuum switch is working properly and that you’re able to use four-wheel drive when you need it.

Here are a few additional reasons why a transfer case vacuum switch is necessary:

• It helps to prevent damage to your vehicle’s drivetrain. When you’re in four-wheel drive, the transfer case is responsible for sending power to all four wheels. If the transfer case vacuum switch fails, it could cause the transfer case to overwork and eventually fail.
• It improves fuel economy. When you’re in two-wheel drive, the transfer case isn’t engaged, which means that your engine doesn’t have to work as hard. This can lead to improved fuel economy.
• It provides better traction. When you’re in four-wheel drive, you have more traction than you do in two-wheel drive. This can be helpful for getting around in slippery or off-road conditions.

  My Buying Guide on ‘Transfer Case Vacuum Switch S10’

The transfer case vacuum switch is a vital part of your S10’s drivetrain. It controls the flow of vacuum to the transfer case, which in turn engages or disengages the four-wheel-drive system. If your transfer case vacuum switch fails, you will not be able to engage four-wheel drive, which can be dangerous in slippery or off-road conditions.

Symptoms of a Bad Transfer Case Vacuum Switch

There are a few symptoms that can indicate that your transfer case vacuum switch is bad. These include:

• The four-wheel-drive system will not engage or disengage properly.
• The transfer case will make a whining or howling noise when you engage four-wheel drive.
• The transfer case will not shift into gear properly.
• The transfer case will leak fluid.

How to Test a Transfer Case Vacuum Switch

You can test your transfer case vacuum switch yourself using a few simple tools. Here’s what you’ll need:

• A multimeter
• A vacuum pump
• A set of jumper cables

1. First, disconnect the negative battery cable.
2. Locate the transfer case vacuum switch. It is usually located on the firewall, near the transfer case.
3. Disconnect the vacuum line from the transfer case vacuum switch.
4. Connect the vacuum pump to the vacuum line.
5. Turn on the vacuum pump and set the pressure to 15 psi.
6. Connect the positive battery cable to the transfer case vacuum switch.
7. With the multimeter set to DC volts, touch the positive lead to the wire connected to the transfer case vacuum switch and the negative lead to a ground.
8. The multimeter should read 12 volts.
9. If the multimeter does not read 12 volts, the transfer case vacuum switch is bad and needs to be replaced.

Replacing a Transfer Case Vacuum Switch

Replacing a transfer case vacuum switch is a relatively simple procedure that can be completed in about an hour. Here’s what you’ll need:

• A new transfer case vacuum switch
• A set of metric wrenches
• A 10mm socket
• A 12mm socket
• A Phillips head screwdriver

1. First, disconnect the negative battery cable.
2. Locate the transfer case vacuum switch. It is usually located on the firewall, near the transfer case.
3. Remove the two 10mm bolts that secure the transfer case vacuum switch to the firewall.
4. Remove the 12mm bolt that secures the vacuum line to the transfer case vacuum switch.
5. Disconnect the vacuum line from the transfer case vacuum switch.
6. Remove the transfer case vacuum switch from the firewall.
7. Install the new transfer case vacuum switch in the reverse order of removal.
8. Connect the vacuum line to the transfer case vacuum switch.
9. Tighten the 12mm bolt that secures the vacuum line to the transfer case vacuum switch.
10. Tighten the two 10mm bolts that secure the transfer case vacuum switch to the firewall.
11. Reconnect the negative battery cable.

Replacing a transfer case vacuum switch is a relatively simple procedure that can be completed in about an hour. By following the steps in this guide, you can easily and safely replace your transfer case vacuum switch and get your S10 back on the road.