Ron Ananian tackles listener questions about automotive issues, including a detailed discussion on a 2015 Chevy Suburban with hard brake pedal problems. He explores potential vacuum pump failures and offers practical diagnostic advice. The episode also features a nostalgic conversation about classic cars, particularly a 57 Chevy, highlighting the shared experiences of car enthusiasts. Ron's expertise shines through as he guides listeners through troubleshooting while sharing personal anecdotes that resonate with fellow car lovers.
It’s a busy hour on Ron Ananian, The Car Doctor—and the calls cover everything from safety to big-dollar decisions.
First, Frank calls about a 2015 Chevy Suburban with an intermittent hard brake pedal. Ron points to a known GM issue involving the engine-driven vacuum pump and brake booster contamination, and explains the smart first test to confirm it.
Next, Stan’s 2019 Ford Escape 1.5L is losing coolant with no visible external leak, raising concerns about internal engine issues and the frustrations of dealing with extended warranty “script readers.” Ron lays out a logical path: prove what it’s not, document what it is, and push for coverage.
Then, a 2021 Jeep Wrangler owner reports cold hard shifts into 3rd/4th—Ron suggests checking for pending codes, software updates, and relevant service bulletins before damage gets worse.
Finally, James asks what to look for as his son buys his first vehicle: a 2009 Chevy Silverado with 163k miles. Ron gives the real-world checklist—rust, maintenance history, fluids, overall condition, and budgeting for what happens if the drivetrain quits.
As always: don’t assume—test, verify, and make decisions with your eyes open.
"...I read about this guy who bought a 2020 Porsche Cayman that was well-loved. I mean, there are plenty of Caymans in great condition on eBay, but this one needed some work."
The Porsche Cayman is a sports car that is known for being fun to drive. The 2020 version is well-designed and has a powerful engine, which makes it exciting for car lovers.
The Porsche Cayman is a mid-engine sports car known for its balance and performance. The 2020 model features a sleek design and offers a thrilling driving experience, making it a popular choice among car enthusiasts.
"all with parts he found on eBay. And now that nearly scrapped Cayman is out tearing up the track. From Toyota's to Aston Martin's, eBay has thousands of cars in the largest online selection of vehicle parts and accessories."
eBay is a website where you can buy and sell many things, including cars and car parts. It's a good place to find hard-to-get items for your vehicle.
eBay is a popular online marketplace where users can buy and sell a wide variety of items, including cars and automotive parts. It offers a vast selection, making it a go-to platform for enthusiasts looking for specific components or vehicles.
"...s get right into it. Frank in Illinois, 15 Chevy Suburban, and some break questions."
The Chevrolet Suburban is a large SUV that can carry a lot of people and cargo, making it great for families or trips. It's been around for a very long time and is known for being strong and reliable, which is why many people like to talk about it.
The Chevrolet Suburban is a full-size SUV that has been in production since 1935, making it one of the longest-running nameplates in automotive history. Known for its spacious interior and strong towing capacity, it is often favored by families and businesses alike for its versatility and capability. Discussions about the Suburban often revolve around its reliability, comfort, and performance in various driving conditions.
"...to make sure that there was no hang up on the calipers or anything or a brake hose. So I thought, well, okay."
Calipers are parts of the brake system that squeeze the brake pads against the wheels to help stop the car. They are important for making sure the brakes work properly.
Calipers are a crucial component of a disc brake system that house the brake pads and apply pressure to the brake rotor to slow down or stop the vehicle. They play a vital role in ensuring effective braking performance.
"...that unit had a vacuum pump driven on the front of the motor. Yeah."
A vacuum pump helps create a vacuum, which is used in cars to make the brakes work better. It helps the brakes apply more force when you press the pedal.
A vacuum pump is a device that removes air from a system to create a vacuum. In automotive applications, it is often used to assist in brake operation, providing the necessary force to help apply the brakes more effectively.
"Now, the one question I would have and I think you covered it is that it's not a buzzing brake pedal."
A vacuum booster helps your car's brakes work better by using air pressure to make it easier to stop. It means you don't have to push the brake pedal as hard to slow down or stop your car.
A vacuum booster is a device that uses vacuum pressure to assist in the braking process, making it easier to apply the brakes. It enhances braking efficiency by reducing the amount of force needed on the brake pedal.
"You know, sometimes these trucks will have ABS sensor issues as they're slowing down under seven miles an hour..."
ABS stands for Anti-lock Braking System. The ABS sensor helps the brakes work better by preventing the wheels from locking up when you stop suddenly, which helps you steer safely.
An ABS sensor is part of the Anti-lock Braking System that monitors the speed of the wheels. If it detects that a wheel is about to lock up during braking, it modulates the brake pressure to prevent skidding and maintain steering control.
"Then I'm with you, I think she's got a failing pump and if there's oil in those lines as per that Bulletin..."
The power steering pump makes it easier to turn the steering wheel. If it's not working well, you might find it hard to steer your car.
A power steering pump is a component that helps to provide the necessary hydraulic pressure to assist in steering the vehicle. If the pump is failing, it can lead to a lack of assist, making the steering feel heavy or unresponsive.
"What kind of hot rod did you drive in the 60s? 57 Chevy. There you go."
The 57 Chevy is a classic car from 1957 that many people love for its stylish look. It's often modified and is a favorite among car collectors.
The Chevrolet 57 Chevy, part of the Tri-Five series, is a classic American car known for its iconic design and popularity among car enthusiasts. It represents a significant era in automotive history, often associated with hot rodding and customization.
"You know, nobody, nobody ever said, I'm so glad I got rid of my Tri-5 Chevy. You never hear anybody say that, right?"
Tri-5 Chevy is a nickname for Chevrolet cars made between 1955 and 1957. They are popular among car lovers because of their cool designs and history.
The Tri-5 Chevy refers to a series of Chevrolet cars produced from 1955 to 1957, which includes the popular models like the Bel Air, 210, and 150. These cars are highly sought after by collectors due to their classic styling and performance potential.
"And I had a four speed wide ratio out of a 65 Chevelle. We put a 456 gear in it."
The Chevrolet Chevelle is a car made by Chevrolet that was popular in the 1960s and 70s. The 1965 version is known for being fast and powerful, making it a favorite for racing.
The Chevrolet Chevelle is a mid-size car that was produced by Chevrolet from 1964 to 1977. The 1965 model is particularly known for its performance and was popular among drag racers.
"We put a 456 gear in it. And boy, would that thing ever take off."
A 456 gear is a specific setting in a car's rear end that helps it accelerate faster. It means the car can take off quickly, but it might not go as fast overall.
A 456 gear ratio refers to the number of teeth on the ring gear compared to the pinion gear in the rear differential. A higher gear ratio like 456 provides quicker acceleration but can reduce top speed.
"he rebuilds the whole thing with all these parts he found on eBay."
Parts are the different pieces that make up a car. Just like a puzzle, each part is important for the car to work properly.
In automotive terms, 'parts' refer to the individual components that make up a vehicle. This can include everything from engines and transmissions to smaller items like brakes and electrical systems.
"Okay, so in, uh, 74, I bought a 2019 Ford Escape SE,"
The Ford Escape SE is a type of small SUV made by Ford. It's designed to be practical for everyday use, and the SE version usually has more features than the basic model.
The Ford Escape SE is a variant of the Ford Escape, a compact SUV known for its practicality and versatility. The SE trim typically includes additional features and options compared to the base model, enhancing comfort and technology.
"They had a bunch of them with porosity in the block. The block was porous and Ford wants the block replaced."
Porosity means there are small holes in the engine block that shouldn't be there. These holes can cause problems like leaking coolant and overheating.
Porosity refers to the presence of tiny holes or voids in a material, which can compromise its structural integrity. In the context of engine blocks, porosity can lead to coolant leaks and overheating issues.
"So they're telling me, you know, I do have an extended warranty on it."
An extended warranty is like extra insurance for your car that covers repairs after the regular warranty ends. It helps you avoid paying for expensive fixes out of pocket.
An extended warranty is a service contract that provides coverage for repairs or replacements beyond the standard warranty period. It can help protect against unexpected repair costs after the manufacturer's warranty expires.
"...is the coolant low again? I did not check it today. So I would, you know, I would check it."
Coolant is a liquid that helps keep your car's engine from getting too hot. It moves around the engine to absorb heat and then goes to the radiator to cool down.
Coolant is a fluid used in engines to regulate temperature and prevent overheating. It circulates through the engine and radiator, absorbing heat and dissipating it to maintain optimal operating conditions.
"...if it's a marginal water pump, for example, and it's, it's, it's, it's peeing coolant every now and then."
The water pump is a part of your car that helps move the coolant around the engine to keep it cool. If it doesn't work properly, the engine can overheat.
The water pump is a crucial component in a vehicle's cooling system, responsible for circulating coolant throughout the engine and radiator. A failing water pump can lead to overheating and engine damage.
"...needed tires. They ended up doing tires and sensors. They couldn't get the sensors to program. Now, and I've talked about this before. We had a Lexus..."
The Ram 1500 is a large truck that people often use for hauling and towing. It's known for being powerful and comfortable to drive.
The Ram 1500 is a full-size pickup truck known for its strong performance and comfortable ride. It's popular among those who need a versatile vehicle for both work and personal use.
"...y put, um, tires and wheel speed sensors in a 22 ram pickup. The truck had two, had a tire pressure li..."
The Dodge Ram is a tough pickup truck that's built to handle heavy loads and rough conditions. The 2022 version has some cool features and is designed to be more fuel-efficient, which makes it a popular choice for people who need a truck for work or everyday use.
The Dodge Ram, now known as the Ram Truck, is a line of pickup trucks that are recognized for their ruggedness and capability. The 2022 model features advanced technology and improved fuel efficiency, making it a popular choice among truck enthusiasts and those needing a reliable work vehicle. Discussions about the Ram often include topics like maintenance, performance upgrades, and common issues.
"...I think, auto being a scan tool company, their tooling has to work better to talk to that vehicle..."
A scan tool is a device that mechanics use to check what's wrong with a car. It connects to the car's computer to read error messages and see how different parts are working.
A scan tool is a diagnostic device used by mechanics to communicate with a vehicle's onboard computer. It helps identify issues by reading error codes and monitoring various systems within the vehicle.
"...we put 31 smart sensors in and it's, it's, it's not, we're not able to program. We can get the light to go out. We can't get a display on the dashboard..."
Smart sensors are special devices in cars that can send information to the car's computer. They help monitor things like tire pressure and make sure everything is working well.
Smart sensors are advanced devices that can communicate with a vehicle's onboard computer system. They are often used in tire pressure monitoring systems and other applications where real-time data is crucial for vehicle performance and safety.
"...first we took the left front sensor through the tire cause we have, we have wireless program and we can do that."
The left front sensor is a part of the car that checks the air pressure in the left front tire. It helps make sure the tire is safe to drive on.
The left front sensor typically refers to a specific sensor located in the left front tire of a vehicle, often part of the TPMS. It monitors tire pressure and communicates with the vehicle's onboard computer to ensure proper tire function.
"...that strange serial number that you see on TPMS sensors stood next to the truck, waited about two minutes. Boy, the light goes out and the left front tire displays showing zero pressure."
TPMS sensors help keep track of how much air is in your tires. If the pressure gets too low, they let you know so you can fill them up and drive safely.
TPMS stands for Tire Pressure Monitoring System. These sensors are installed in tires to monitor their air pressure and alert the driver if the pressure is too low, which can be crucial for safety and performance.
"...access to Chrysler's website auto off their security website. Oh boy, this is going to get really great..."
Chrysler is a car company in the United States that makes different types of vehicles, including cars and trucks.
Chrysler is an American automobile manufacturer known for producing a range of vehicles, including sedans, SUVs, and trucks. The brand is part of Stellantis, which also includes other manufacturers like Dodge and Jeep.
"...we have to go through Chrysler security in order to program tire pressure monitoring systems. So we did that long story short..."
Tire pressure monitoring systems are tools in cars that check if the air in the tires is at the right level. If the air is too low, the system lets the driver know to fix it.
Tire pressure monitoring systems (TPMS) are safety features in modern vehicles that monitor the air pressure in tires. If the pressure drops below a certain level, the system alerts the driver, helping to prevent tire blowouts and improve fuel efficiency.
"It talks about problems with the third gear clutch pack, third year clutch assembly."
The third gear clutch pack is a part of the car's transmission that helps it change into third gear. If it has problems, the car might not shift smoothly when driving.
The third gear clutch pack is a component in an automatic transmission that engages and disengages the third gear. Problems with this clutch pack can lead to shifting issues and affect overall transmission performance.
"...ask him to do a code scan for year make model. Is there anything pending? Just because the lights are not on yet..."
A code scan is when a mechanic checks your car's computer for error messages. These messages can help find out if something is wrong with your car, even if there are no warning lights on yet.
A code scan is a diagnostic procedure where a mechanic uses a scan tool to read error codes from a vehicle's onboard computer. These codes can indicate specific issues or malfunctions within the vehicle's systems, helping to identify problems before they become serious.
"...we think we found something in its price range. It's a 2009 Chevy Silverado 4x4. We pulled a car fax report, and everything looks good with that..."
The Chevy Silverado 4x4 is a big truck that can handle rough terrain and is often used for work or towing. The 2009 version is known for being tough and having a lot of space inside.
The Chevy Silverado 4x4 is a full-size pickup truck known for its durability and off-road capabilities. The 2009 model year features a range of engine options and a spacious interior, making it a popular choice for both work and personal use.
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The worst part about loving cars might just be buying them
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I read about this guy who bought a 2020 Porsche Cayman
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all with parts he found on eBay.
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Now, start your engines.
The car doctor is in the garage
and ready to take your call.
Hey, it looks like a busy hour's shaping up.
The phones are kind of backed up,
so let's get right into it.
Frank in Illinois, 15 Chevy Suburban,
and some break questions.
Frank, welcome to the car doctor, sir.
How can I help?
Frank?
Is Frank there?
Frank going once.
Frank, there he is.
Okay.
Hey, Frank, we knew you had to be there somewhere.
So how can I help you today, sir?
What's going on?
Well, the daughter and her husband had bought a 2015 Suburban
about eight months ago.
And unfortunately, they're about 1,000 miles from me,
so this is a long distance repair.
Everything from me is, listen, Frank,
everything from me is a long distance repair, sir.
It won't matter.
And about three weeks ago, she called and said,
part of the time when she goes to stop,
breaks and everything worked perfect.
Sometimes she goes to stop.
The pedal is super hard.
Okay.
So I asked her a few questions.
Well, do you hear any noise from the brakes
or anything?
No.
Any dash lights on?
No.
Is it pulling left or right?
No.
I said, okay, so let me just scratch my head,
do a little research.
Well, we were visiting three months ago
and being an old teenager in the 60s and a hot rodder,
I just pulled the wheels, looked at all the brakes.
Pads had plenty of pad, they were wearing evenly,
the slides were moving all right.
I started it up and then I got out and spun the wheels
to make sure that there was no hang up on the calipers
or anything or a brake hose.
So I thought, well, okay.
So when I kind of went to look and I seen
that that unit had a vacuum pump
driven on the front of the motor.
Yeah.
So I said, well, I told her husband there,
so I can see if that hose was leaking anywhere.
I said, it probably runs up to the dash and everything.
And so anyway, then I got to thinking there.
I said, well, okay, it's got a vacuum leak.
I don't know about an ABS wheel speed sensor.
It'd be at their up.
So when I talked to her again,
I said, now run that by me again.
She said, well, when I go to stops,
sometimes it's normal, sometimes it's super hard.
But she said, it only pushes super hard
when I'm going slow.
I said, oh, you know, like 20 miles an hour below.
I said, otherwise it works fine.
Yes.
So I'm thinking, ooh, that sounds like that's vacuum related
on that unit.
And I said, well, told her husband to check that belt,
try to find any leaks in that hose going up.
It probably goes to the firewall.
So I'm just suspicious what you would suggest.
Take the vacuum line off at the brake booster.
Okay.
And see if there's any oil in it.
Oh, okay.
And if there is, change the pump and the booster.
Oh, okay.
Get your hands on GM Bulletin,
PIT 5361D is in David, 5361 David.
If you've got a repair shop that's got any kind of access
to service information, they'll be able to find it
if they go in under your make model.
Pitt 5361 sort of stands out on those trucks.
They've had known problems with the vacuum booster
and or the pump itself rather, the vacuum pump oils
getting in there and it's causing things to corrode
and fail and they've got some issues as a result.
Now, the one question I would have and I think you covered it
is that it's not a buzzing brake pedal.
You know, sometimes these trucks will have ABS sensor issues
as they're slowing down under seven miles an hour
and you'll step on the pedal
and it'll just start to vibrate and shake slightly side to side.
It almost drops out from under.
The complaint that I usually get for that
is that it feels like the pedal is falling away from me.
And if that's not her complaint, if it's a legitimate,
hey, I've got a hard brake pedal,
like there's no power assist,
but the pedal is consistent in height all the time.
It just feels like there's lack of assist.
Then I'm with you, I think she's got a failing pump
and if there's oil in those lines as per that Bulletin
as per 53.61, it will tell you if there's oil in the lines,
you're gonna change all the parts.
If there's oil only in the booster,
you're gonna change the hose and any accompanying parts,
you know, booster hose line, et cetera,
that goes with that pump.
So, but yeah, that's a pretty common, pretty common issue.
So.
Yeah, she did mention sometimes, I guess,
when it does push is hard.
She said it almost feels like it almost wants
to grind this a little.
I said, you sure it's not like a shutter?
Well, she said it could be.
Yeah, you know, listen, I'm not saying it can't be,
but if there was something grinding,
if there was a brake pad metal on metal,
if there was a shim out of place,
you would think it would be more consistent.
I always tell everybody, fix the first known problem.
If we can prove a bad vacuum pump and, you know,
and replace that, and that solves the bigger issue,
then we'll go and diagnose round two.
Never diagnose a broken car as crazy as that sounds.
You know, if you can prove the first problem,
fix the first problem, dad always told me, he said,
Ron, you're always gonna fix what you know is bad,
move on to the next thing,
because it'll always be something else.
You know, it's because half the time you'll spin your wheels
and you'll chase something that isn't really there,
or you don't know it's there.
You don't know it's there until you fix A,
you don't know if you've got to deal with B.
So.
Now, if they pull that line up there by the firewall there
and there's no oil in that line.
Then I'm gonna get, then I'm still gonna get my hands
on 53.61 and follow the diagnosis,
but I'm willing to bet she's got a,
she's got a problem with the vacuum pump.
All right.
Okay.
You know, and she's gonna, you know,
that vacuum pump is mounted to the engine block
located by engine oil.
So the reason you're gonna see oil in the booster line
is because somewhere in the process,
you're gonna see oil coming out of a hose
where it's not supposed to be,
because the pump diaphragm starts to get porous
and it bleeds oil through,
and then that vacuum follows its way through the rest
of the vacuum pump up the line and up over the booster.
So, you know, it would be logical
and you know, geez, if I've seen this 50 times,
I've seen it 200 times and 150 times,
it's been a vacuum pump.
You know, it's just very common.
I'm not saying automatically replace it,
but I would say give it a good look over
because I think you're gonna find oil there
and it's bleeding through the vacuum pump itself.
Okay.
Well, I kind of suspicious of that,
but I wanted to get your opinion.
No, you're on point, sir.
What kind of hot rod did you drive in the 60s?
57 Chevy.
There you go.
I wish I had it back.
You know, nobody, nobody ever said,
I'm so glad I got rid of my Tri-5 Chevy.
You never hear anybody say that, right?
It's, I always wish I had it back is the one line.
Most people that drove cars in the 60s
all pretty much say the same thing.
A lot of them anyway.
Well, the Chevy people I know,
they're all like, you know, I wish I had it back.
So it's just a fun time to think about.
So, but yeah.
Yeah, it was great times back then.
Yeah, it was a different world, every different world.
So what, I gotta ask this too, Frank,
what engines you have in that 57?
That had a 283, but a fellow that did drag racing
at a local strip, it needed rebuilding
because it needed, it was using oil.
So he just put in a 327 cam intake
and a single feed holly.
And I had a four speed wide ratio out of a 65 Chevelle.
We put a 456 gear in it.
And boy, would that thing ever take off.
Yeah, that thing screamed, right?
Yep, yep, yep, yep, yep, yep.
Cool stuff.
Well, good memories.
Frank, I appreciate the call, sir.
Thanks for playing along.
Hey, thank you very much.
You're very welcome, sir.
You be well.
Well, I'm Ron Anani in the car doctor,
855-560-9900, I'll be back right after this.
Lately, car buying has become a pretty dull experience.
But on eBay, behind every car and part
is a story waiting to be shared.
Like this guy I read about who bought a 2020 Porsche Cayman
GT4 on eBay, it was well loved.
I mean, there are plenty of Caymans
in great condition on eBay, but this one needed some work.
That's just the start of the story.
So after this guy gets a great deal on his dream car,
he rebuilds the whole thing with all these parts
he found on eBay.
Performance brakes, suspension, body panels, the works,
guaranteed to fit.
Next thing you know, this nearly scrapped Cayman
was out there on the track as a full blown race car.
You're ready to go daily driver, your next resto mod,
Hello Lotus Elon, and the parts to finish it.
eBay has thousands of cars and is the largest
online selection of vehicle parts and accessories.
eBay, things, people, love.
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