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Can You Fix Your Car Yourself With Help From These Guys - Maybe

Can You Fix Your Car Yourself With Help From These Guys - Maybe

Under The Hood show Mar 22, 2026 50 min
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About this episode

A lively call-in session tackles DIY-ish fixes and why some repairs are worth attempting. Russ walks through a common door-jam wiring failure on a 2019 Chevy Equinox—how to access the harness, splice with heat-shrink butt connectors, and avoid creating new stress points. They also debate whether to hunt down a hard-to-find OEM harness versus repairing wires. Other segments cover Dakota Digital fuel-gauge troubleshooting (grounding and signal checks), a quirky 1974 Cutlass “lift your butt” start issue tied to seat-belt interlock logic, and supply-chain pricing shocks after a Ford aluminum plant fire. EV and weather impacts round it out.

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Technical Too Afraid to Ask
Concept

Electric car insurance

"[57.0s] Electric car insurance. [58.3s] And road ready wheels. [60.1s] Replica OEM wheels add huge savings."

Insurance for electric cars can cost differently than for gas cars. That’s usually because EV repairs—especially battery-related parts—can be more expensive.

Part

Replica OEM wheels

"[58.3s] And road ready wheels. [60.1s] Replica OEM wheels add huge savings. [62.9s] Use the offer code hoodie for even more."

Replica OEM wheels are aftermarket wheel designs made to match the look of original equipment manufacturer (OEM) wheels. They’re often cheaper than true OEM wheels, but quality can vary by brand—so it’s worth checking load rating, fitment, and finish.

Car

2019 Equinox Premier

"I'm going to need some help with the 2019 Equinox Premier 60,000 miles. Last week, Sunday, when I, it's my wife's car,"

This is a Chevrolet Equinox SUV from 2019, in the Premier trim. The caller’s problem is electrical—things like the radio and the power windows aren’t working reliably.

Company

GM

"the replacement harness is no [152.3s] longer available from GM. [154.4s] Sure."

GM is the company that made the car. They’re saying the exact replacement wiring part isn’t being sold anymore by GM, so you have to use other repair methods.

Concept

wires flexing from repeated door opening/closing

"the broken wires in a door jam is really common [161.1s] because it's like a coat hanger. [162.7s] You bend it so many times and it breaks."

Door-jamb wiring failures are often caused by repeated bending and flexing of the wire bundle at the hinge/door transition. Over time, the insulation and conductors fatigue, leading to broken wires and intermittent electrical issues.

Part

butt connector that's heat shrink

"And we usually replace the damaged section with a butt connector that's heat shrink for weatherproofing. And the reason we do that is because you're going to lose that."

A butt connector is a small piece that joins two wire ends together. The “heat shrink” part means you heat it and it tightens like a seal, helping keep water out and protecting the connection.

Term

weatherproofing

"And we usually replace the damaged section with a butt connector that's heat shrink for weatherproofing. And the reason we do that is because you're going to lose that."

Weatherproofing means keeping water away from the wire connection. If water gets in, the connection can corrode and start acting up.

Term

insulated very well

"It's not a real difficult job. You just want to make sure you get them all insulated very well. And pull on any of them that don't look broken."

Insulation is the protective coating on the wire. You want the repair covered well so the wires don’t short out and don’t get damaged by moisture.

Term

pins

"you could compare the two and look at the pins and all that stuff, but that's a lot of work."

Pins are the little metal contacts inside the connector that carry the electricity. Checking the pins helps make sure the wires will plug in correctly and work the right way.

Term

splice

"[453.8s] There's so many little inventions out there now for [455.5s] for splice and wires."

A splice is how you connect two pieces of wire together. In a car, it has to be sealed well so moisture doesn’t cause the connection to fail later.

Term

VIN number

"But if you knew by VIN number that it had the matching options, it's a little bit of a gamble."

VIN is like your car’s fingerprint. It helps you figure out exactly what your car was built with, so you can buy parts that actually fit.

Term

memory seat

"So you know it doesn't have the memory seat. That's sort of the hard harness to find because I spent probably three hours on Cardass Park trying to pick through."

A memory seat lets you save your preferred seat position. Then you can press a button and the seat moves back to that spot automatically.

Term

combination wrenches

"But you roll it out and you're going to find like combination wrenches in there. Some sockets in there as well with the ratchet,"

A combination wrench has two useful ends. One end grips the bolt loosely, and the other end grips it more tightly so you’re less likely to strip the bolt.

Term

sockets

"Some sockets in there as well with the ratchet, a flashlight, a cutter, all the things. The stuff that you're reaching for,"

Sockets are the “heads” that fit over nuts and bolts. They connect to a handle so you can turn fasteners more easily and with less slipping.

Term

ratchet

"Some sockets in there as well with the ratchet, a flashlight, a cutter, all the things. The stuff that you're reaching for,"

A ratchet is a tool handle that lets you tighten or loosen fasteners with a back-and-forth motion while only turning in one direction. It’s especially useful in tight engine-bay spaces where you can’t swing a full wrench.

Term

vice grip type pliers

"The stuff that you're reaching for, the vice grip type pliers, you're reaching for those babies when you have some kind of breakdown on the side of the road."

“Vice-grip” style pliers are locking pliers that clamp onto a part and hold it in place without constant squeezing. They’re handy for roadside fixes like holding a hose, securing a cable, or gripping a stubborn fastener.

Company

advanced auto parts

"Yeah, we do stuff. So you can find out who's got the best stuff, like advanced auto parts. And if you're not Joseph and you didn't win it,"

Advanced Auto Parts is a major U.S. retailer of automotive parts, tools, and accessories. The hosts are directing listeners to buy the toolkit there, which is relevant for DIYers who want to assemble or replace basic roadside gear.

Term

fender

"And the price of that fender used is they wanted close to $1,500 for the fender. That normally would cost $300 to $500 give or take."

A fender is the metal/plastic panel above the wheel. If it gets damaged, shops may replace it with a used or new one, and the price can jump if the part is hard to find.

Term

seat belt buckled

"[1210.1s] You couldn't start the car unless the belt was clicked. [1213.9s] You had to have the seat belt buckled in order for it to crank."

This refers to a seat-belt interlock that can block the starter/ignition circuit. In the transcript, the car “won’t crank” unless the seat belt is buckled, which forces the driver to be restrained before starting. It’s an older approach to improving compliance with seat-belt use.

Company

car-part.com

"And by car-part.com with over 200 million parts, find them online at car-part.com."

They’re pointing you to car-part.com to find car parts online. It’s meant to be a big marketplace, especially useful when you can’t find something locally.

Term

OEM replica wheels

"And by Road Ready Wheels, OEM replica wheels at a huge savings, roadreadywheels.com."

OEM replica wheels are aftermarket wheels made to look like the factory wheels. They’re a way to get the same style without paying OEM prices.

Company

Berkeley One Classics

"When we needed protection for our own personal collectibles and performance vehicles, we turned to Berkeley One Classics and here's why."

Berkeley One Classics is an insurance company they trust for special cars. The point is that they help set up coverage that fits your vehicle.

Concept

recycled parts

"Whichever you choose, buying recycled is good for the environment and good for your wallet."

Buying recycled (used) parts typically costs less than new parts and can reduce environmental impact by keeping components out of landfills. For DIY repairs, it can also be a way to source discontinued or hard-to-find parts.

Company

Road Ready Wheels

"We want to tell you about our partner at Road Ready Wheels. [1435.9s] Road Ready Wheels has the very best aftermarket OEM replica wheels available, [1441.0s] with a direct fit of the factory center caps and TPMS sensors,"

Road Ready Wheels sells replacement wheels for cars. They’re advertising wheels that are designed to work with your car’s existing center caps and tire-pressure sensors.

Concept

TPMS sensors

"Road Ready Wheels has the very best aftermarket OEM replica wheels available, [1441.0s] with a direct fit of the factory center caps and TPMS sensors, [1444.9s] so you don't need special caps and sensors."

TPMS (Tire Pressure Monitoring System) sensors are devices mounted in or near the wheel that measure tire pressure and alert the driver when pressure is low. When changing wheels, you often need to ensure the new setup can work with your existing TPMS sensors (or replace them).

Part

Aftermarket wheels

"Aftermarket wheels can be very expensive, and it's so hard to choose what you want. With Road Ready Wheels, you get an OEM looking wheel that fits like it should, but costs much less."

Aftermarket wheels are wheels you buy that aren’t the original factory ones. They can change how your car looks and sometimes how it drives, but they have to be the right size and fit correctly.

Term

fuel gauge

"So for Ford, on that one, if the wire is not connected, the fuel gauge reads empty. If the wire is not connected on a GM, the gauge goes all the way to full, it's broken on full."

Your fuel gauge is the dashboard light that shows how much gas you have. It depends on a sensor in the gas tank, so if the wiring or ground is wrong, the gauge can lie.

Term

grounded

"it at least needs to be grounded, for the sending unit needs to be grounded to the body of the vehicle, and the body of the vehicle needs to be grounded to the frame, and then your battery needs to be grounded to the frame, the body needs to be grounded,"

In a car, “ground” is the electrical path back to the battery. If the ground connection is loose or corroded, sensors and gauges can act weird or stop working.

Term

vinyl top

"It's red with a black vinyl top. Look at me, how about that?"

A vinyl top is a fake “roof” covering made of vinyl material. On older cars, it was a popular style choice, and replacing it correctly can be part of restoring the car’s original look.

Term

brakes

"...I've put tires on these cars and as one of them put some brakes on their car..."

Brakes are discussed as another maintenance item, with the speaker noting that at least one friend needed brakes. EVs often use regenerative braking to reduce pad wear, but friction brakes can still be needed for harder stops and long-term maintenance.

Term

iron phosphate

"[2718.5s] Yeah. And it's a different technology. It's iron phosphate being used instead of some of [2723.5s] the other materials, uh, rare earths that were being used."

Iron phosphate is one of the materials inside an LFP battery. It’s part of what makes this battery chemistry cheaper, but it also affects how the battery can be recycled later.

Term

EVs

"Well, you have that to consider, you know, going back to the EVs, or I jumped off there again, but going back to the EVs, the other thing that people forget when you talk about maintenance..."

EVs are electric cars. They use electricity to move, but they still have other electronics that need power too.

Concept

high voltage system vs low voltage systems

"...because there's so many onboard systems, the navigation systems and everything else that are going on in the vehicle, they don't run off the high voltage system."

EVs have two power “worlds”: the big battery that drives the car, and the smaller 12-volt system for electronics. The 12-volt side still matters a lot for everyday features.

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