How Do I Fix The Heat In My Jeep Grand Cherokee?

by | Last updated on January 24, 2024

, , , ,
  1. Drain the cooling system. …
  2. Loosen the hose clamp using pliers. …
  3. Remove the bolts on the housing with a socket and ratchet. …
  4. Remove the thermostat. …
  5. Remove the rag. …
  6. Install the thermostat housing and bolts. …
  7. Close and tighten the radiator drain plug. …
  8. Turn the engine off.
Contents hide

Why is my Jeep only blowing cold air?

Your Jeep's thermostat is a valve that helps regulate engine temperature. … When the valve sticks open, then the engine runs cooler than normal and should cause the check engine light to illuminate. This will usually only allow the to blow out cold air as well, and you'll additionally notice a loss of gas mileage.

What are the most common problems with the Jeep Grand Cherokee?

The four most common Jeep Grand Cherokee problems are

erratic electronic shifting, engine stalling while driving, alternator failure, and ignition switch malfunction

.

Do Jeep Grand Cherokees have problems?


The Grand Cherokee has more than a quarter of all the Jeep complaints

, with 3,000 across all model years. … The 2011 Grand Cherokee has the most total complaints with 741, but Car Complaints called out the 2015 Grand Cherokee as the worst model year since it has higher repair costs and problems at lower miles.

How do you reset a PCM on a Jeep Grand Cherokee?

  1. Step 1 – Prepare to reset the ECU. …
  2. Step 2 – Disconnect the battery. …
  3. Step 3 – Ground positive cable to the negative cable. …
  4. Step 4 – Reconnect the battery. …
  5. Step 5 – Turn the headlights on and then off. …
  6. Step 6 – Turn key to the “OFF” position.

Why is there no heat coming from my car heater?

A heater can stop working for a number of reasons, including:

A low antifreeze/water level in the radiator

due to a leak in the cooling system. A bad thermostat that isn't allowing the engine to properly warm up. A blower fan that isn't working properly.

Why does the heat not work in my Jeep?

The most common reasons a Jeep Wrangler heater isn't working are

a broken heater blower motor

, a problem with the thermostat, or a failed heater blower motor resistor.

How many miles is too many for a used Jeep Grand Cherokee?

Looking at the data above, we can say that a Jeep Grand Cherokee can provide you

up to 300,000 miles of

use. In fact, there are even those that can reach more than 300K. Nevertheless, professionals suggest that it is best to purchase a Grand Cherokee that has less than 300,000 mileage.

What does Laredo E mean?

The Laredo E is

a slightly nicer version of the base Laredo

. The main equipment added by the Laredo E are a few exterior accents such as roof rails, power seating for the driver and the front passenger, and satellite radio integration.

How long will a Grand Cherokee last?

According to Southside Dodge, a Jeep Grand Cherokee could last

up to 20 years

as a durable option. It's a well-built model with longevity in mind, unlike sport cats that quickly cycle out of style.

Are Jeep Grand Cherokees expensive to fix?

Jeep Grand Cherokee Maintenance Costs

A Jeep Grand Cherokee will cost

about $10,484 for maintenance and repairs during its first 10 years of service

. This is more than the industry average for popular SUV models by $1,604. There is also a 31.13% chance that a Grand Cherokee will require a major repair during that time.

Is Jeep Grand Cherokee a good buy?

Yes,

the Jeep Grand Cherokee is a good SUV

. Its powertrains are only so-so, but it handles well, rides comfortably over most road surfaces, and is one of the best off-roaders in the midsize SUV class. This Jeep also features an upscale interior that rivals those of some luxury SUVs.

What year of Jeep Grand Cherokee is the best?

The

2010 Jeep Grand Cherokee

is the best year to purchase. These models are reliable and have fewer problems than other rivaling years. Aside from 2010, purchasing a Jeep Grand Cherokee from the years 2009, 2011, and 2015 should give the driver great quality at an affordable price.

What is a PCM on a Jeep Grand Cherokee?

The

Powertrain Control Module

(PCM) is the computer that controls most of your Jeep's essential systems. The PCM controls the engine timing, the fuel to air ratio, the transmission, and the anti-lock brakes, along with dozens of other smaller functions.

How do you reset the computer on a Jeep Cherokee?


Disconnect the negative battery cable

and leave it disconnected overnight. Reconnect the negative battery cable in the morning and all but any hard codes will be cleared. By disconnecting the battery, you are essentially giving the computer a form of amnesia, whereby the computer forgets any stored codes.

How do I reset my Jeep computer?

  1. disconnect positive battery cable.
  2. disconnect negative batter cable.
  3. hold both cables together for 30 seconds.
  4. connect positive back up.
  5. connect negative.

What to check if heat is not working?

  1. Check that your thermostat is set to “heat.” …
  2. Change the filter. …
  3. Make sure the gas is on. …
  4. Clear the chimney exhaust flue. …
  5. Clean away leaves and debris from exhaust vents. …
  6. Flush out the drain lines. …
  7. Check for blocked ducts restricting airflow.

How do I know if I need a blower motor or a resistor?

Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't

work

at low speeds. In some cars, a failed blower motor resistor can cause a heater fan to stop working completely.

Why is my heat not working?


Dirty filters

are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won't warm up. If the blower is running but no heat is coming out, replace the filter.

Why would my car overheat but the heater blows cold air?

This can have a number of causes, with a faulty radiator cap being the most common. If you notice your engine is overheating, it also could be a blown head gasket, which is much more serious.

Air bubbles in the cooling system can

cause your heater to blow cold air, but they can do much worse if left unchecked.

Can a blown head gasket cause your heater to not work?

The head gasket may fail so that the engine turns over, but it won't start or struggles to start. A blown head gasket can keep your car from starting. When you have a blown head gasket, you may have

no heat

, no white smoke, no start, no check engine light, or even no overheating in some cases.

What is considered high mileage for a Jeep Grand Cherokee?

What is high mileage for a Jeep Grand Cherokee? Anything

over 300,000 miles

is considered high mileage for the Jeep Grand Cherokee. They will typically last around 200,000 miles, although some owners have reported that they are still driving this model SUV after the odometer has turned over 300,000.

What does JK stand for on a Jeep?

Model Abbreviations

Each Jeep model, (with few exceptions) comes with a two-character abbreviation: JK –

Wrangler 2007

– present. LJ – Wrangler Unlimited 2003 – 2006. TJ – Wrangler 1997 – 2006. YJ – Wrangler 1987 – 1995.

How well do Jeep Grand Cherokees hold their value?

A Jeep Grand Cherokee will

depreciate 51% after 5 years

and have a 5 year resale value of $23,466. The Jeep Grand Cherokee does an OK job of holding its value, but it's not great.

Does Grand Cherokee Laredo E have heated seats?

2020 Jeep Grand Cherokee Laredo E Specs

Among them are

heated front seats

, the bigger 8.4-inch touchscreen with navigation, advanced brake assist, lane departure warning, and full-speed forward collision warning.

What is difference between Jeep Grand Cherokee Limited and Laredo?

The Limited is equipped with power reclining front seats and lumbar support, and the Laredo has manually adjustable front seats. The 2020 Limited has heated front seats, but the 2020 Laredo doesn't. … A convenient power liftgate comes standard on the 2020 Grand Cherokee Limited trim, which is absent from the Laredo trim.

What problems do Jeep Cherokees have?

While the fifth generation (2014-2020) of the Jeep Cherokee is known for its transmission problems, the 2014 and 2015 models are said to be the most problematic. These models suffer from

stuck gears, poor throttle response, and rough coasting

.

How long do Jeep engines last?

Jeep Model Average Lifespan (years) Average Miles Patriot

10-15


100k-200k

Rubicon


10-20


90k-300k
Liberty 10-15 150k-300 Wrangler 10-15 100k-280k

Is a Jeep Grand Cherokee a girl car?

Even though the Grand Cherokee hasn't been redesigned since the current generation was introduced in 2011, it remains one of the best-selling SUVs in America with 242,969 sold in 2019. Not surprisingly, slightly more Grand Cherokee owners are men. J.D. Power data says 59 percent of the Jeep's owners are men, vs.

What is the Laredo package?

The Laredo edition comes with

cloth low-back bucket seats

, while the Limited edition features leather-trimmed bucket seats. The Limited edition has a heated steering wheel. 17-in. aluminum wheels are standard with the Laredo package.

How many miles can a Jeep Cherokee go on a full tank?

With the help of the standard 3.6-liter V-6 engine, the 2020 Jeep Grand Cherokee can take you a long way on a tank of gas. This model has a gas mileage of 19 miles per gallon in the city and 26 mpg on the highway. That gives this model an approximate maximum driving range of

639 miles

with its 24.6-gallon fuel tank.

Which Grand Cherokee is the most reliable?

This Grand Cherokee has all of the latest technology on the interior and is the most luxurious model that has been made yet.

The 2017 Grand Cherokee

has the highest overall reliability rating as well from any of the newest generation of Grand Cherokees.

Which Jeep Cherokee is most reliable?

You have come to the right brand for reliability, but which Jeep SUV is best? According to consumer surveys,

the 2021 Jeep Grand Cherokee

is the most reliable Jeep SUV. With a consumer reliability rating of 80/100, the Grand Cherokee Jeep will have fewer repairs and a longer life.

Are 2021 Grand Cherokees reliable?

Is the 2021 Jeep Grand Cherokee reliable? According to Consumer Reports,

you shouldn't expect the

2021 Jeep Grand Cherokee to be all that reliable. Unfortunately for this year's model, it earned a three out of five predicted reliability rating.

Do Jeep Grand Cherokees have transmission problems?

There have been a

number of transmission problems

reported to the National Highway Traffic Safety Administration (NHTSA) regarding the Jeep Grand Cherokee for many years. However, the 2015 model has some of the most significant problems.

Is the 2020 Jeep Grand Cherokee a good vehicle?

Is the Jeep Grand Cherokee a Good SUV? Yes,

the Grand Cherokee is a good choice among midsize SUVs

. … Fuel economy is also subpar with the Grand Cherokee, and historically, its safety score tends to be below average, though crash test ratings for 2020 are still pending.

Why are Jeep Grand Cherokees so expensive?

The market has a high demand for SUVs, and Jeep can price theirs higher because they

are fewer of them on the market than other SUVs

. That also reduces the supply of used Jeeps. Of all the automakers producing SUVs, Jeep is the only one that has V8 and diesel options for some of its vehicles, like the Grand Cherokee.

What is the most reliable Jeep model?

Some of the most reliable Jeep models include

Jeep Wrangler JK

, Grand Cherokee, Wrangler Rubicon, and Compass. The Wrangler TJ, Jeep Renegade, Hemi Jeep Commander, Wrangler Black Bear, and Moab Edition will also serve you well.

How much is a Jeep Grand Cherokee PCM?

Jeep Grand Cherokee Powertrain Control Module Replacement Cost Estimate. Labor costs are estimated between $38 and $48 while

parts are priced between $616 and $797

. This range is based on the number and age of Jeep Grand Cherokee's on the road.

What causes a PCM to go bad?

PCMs typically fail for one of two reasons:

voltage overloads

(often due to a short in a solenoid or actuator circuit) or environmental factors (corrosion, thermal stress or vibration). … Thermal stress and vibration can form microcracks in circuit boards (which are repairable).

How much does it cost to replace a PCM?

The PCM is a computer, and computers aren't cheap to replace. That's why the average PCM replacement cost is anywhere

between $800 and $1,500

, depending on the car model and labor costs. Even worse, this is almost all in the cost of the PCM itself. Labor typically only runs between $75 and $100.

David Martineau
Author
David Martineau
David is an interior designer and home improvement expert. With a degree in architecture, David has worked on various renovation projects and has written for several home and garden publications. David's expertise in decorating, renovation, and repair will help you create your dream home.