Hummer H3 Ignition Cable (Spark plug wires) Replacement at your home or office.

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Ignition Cable (Spark plug wires) Replacement Service

How much does a Ignition Cable (Spark plug wires) Replacement cost?

On average, the cost for a Hummer H3 Ignition Cable (Spark plug wires) Replacement is $375 with $95 for parts and $280 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2008 Hummer H3V8-5.3LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$542.54Shop/Dealer Price$607.88 - $787.68
2010 Hummer H3V8-5.3LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$481.42Shop/Dealer Price$532.45 - $677.28
2009 Hummer H3V8-5.3LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$481.42Shop/Dealer Price$532.50 - $677.37
Show example Hummer H3 Ignition Cable (Spark plug wires) Replacement prices

What is the Ignition Cable (Spark plug wires) all about?

The ignition cables, also known as “spark plug wires” are part of the ignition system. They transfer the spark from the distributor or ignition coil to spark plugs that ignite the air-fuel mixture, starting the engine.

Over time, the cables can get weak and break down. This will make it harder for the spark to reach the engine cylinders, resulting in engine misfires. The car may not start at all. If one of the spark plugs has gone bad, the car will still start and run, but it will run poorly.

Keep in mind:

  • Ignition cable failure is often caused by other failing pieces in the ignition system; a mechanic should check for any other malfunctioning parts, and replace any parts of the system that don’t work.
  • Every time the ignition cables are replaced, the spark plugs should be inspected.
  • Leaking oil or coolant can cause ignition wire failure. If this is the case, the cause of the leak should be repaired or replaced, or else the new ignition wires will quickly be damaged as well.

How it's done:

  • Scan the computer system in the car for codes.
  • Inspect ignition cables (look for white spots).
  • Ohm test on individual cables.
  • Remove and replace the cables if found faulty.
  • Inspect the spark plugs.
  • Clear the codes.

Our recommendation:

Ignition wires should be replaced at least every 60,000 miles, but whenever your car is serviced, it’s a good idea to have the entire ignition system inspected. Any time that you have spark plugs replaced, it’s a good idea to have the ignition wires replaced as well. If you notice that your engine is running poorly, you should schedule an inspection.

What common symptoms indicate you may need to replace the Ignition Cable (Spark plug wires)?

  • Check Engine light is on.
  • Engine misfires.
  • Poor gas mileage.
  • Engine may shake (light vibration).

How important is this service?

The fuel in your automobile is ignited by a spark. This starts with the ignition coil, which transforms low voltage power into extremely high voltage. This high voltage is transferred through the ignition cables, and to the spark plug, where a spark is created that ignites the engine’s fuel, and powers the engine.

When one or more ignition cables fail, this voltage will not be transferred from the ignition coil to the spark plugs, and the fuel will not be ignited. Depending on how many of your ignition cables malfunction, your car will either run poorly, or won’t run at all.

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(192)

Rating Summary
180
5
2
0
5
180
5
2
0
5

Brikk

19 years of experience
389 reviews
Brikk
19 years of experience
Hummer H3 L5-3.7L - Car is not starting - Charlotte, North Carolina
Professional and polite

Norberto

15 years of experience
6 reviews
Norberto
15 years of experience
Hummer H3 L5-3.7L - Radiator - Fairburn, Georgia
Where do I begin, Norberto was professional and he has a sense of humor, as well... He was on point about my truck and he wasn't irritated by all the questions I was asking! He Was" FANTASTIC!".. He is such A Great Mechanic!... I Am Going To Request Him Every, Time! Thank You, Norberto!

Damian

12 years of experience
430 reviews
Damian
12 years of experience
Hummer H3 L5-3.7L - Serpentine/Drive Belt - Saint Cloud, Florida
Damian was great. I would recommend him.

Colby

15 years of experience
66 reviews
Colby
15 years of experience
Hummer H3 L5-3.5L - Power Steering Pressure Hose - Denver, Colorado
As always, arrived early and did a great job.

Excellent Rating

(192)

Rating Summary
180
5
2
0
5
180
5
2
0
5
Number of Hummer H3 services completed
2112+
services done by our mechanics
TOTAL NUMBER OF EXPERT Hummer MECHANICS
200+
experts on our platform

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