Jeep Grand Cherokee Alternator Guide (2011-2024): Problems, Recalls, and Replacements
Everything Grand Cherokee owners need to know about failing alternators and choosing a reliable new aftermarket replacement.
- Check if your 2011-2014 Grand Cherokee was affected by the major alternator recalls (NHTSA 17V435 & 14V-634) and if the fix was performed.
- Symptoms like flickering lights, a battery warning on the dash, or a whining noise are strong indicators of a failing alternator.
- You must match the amperage (160, 180, or 220 amp) of the original alternator when buying a replacement.
- New aftermarket alternators from brands like Bosch or Denso offer OEM-level quality without the high dealer price tag.
Is Your Grand Cherokee's Alternator Failing?
An alternator rarely fails without warning. If you pay attention to your vehicle, you can often catch the problem before it leaves you stranded. The advanced electronics in the 2011-2024 Grand Cherokee are very sensitive to voltage, so symptoms are often noticeable.
Key Warning Signs:
- Battery Warning Light: A light shaped like a battery on your dashboard is the most direct indicator of a charging system problem.
- Dimming or Flickering Lights: Headlights and interior lights that flicker, dim, or pulse, especially at idle, are a classic sign of a struggling alternator.
- Electrical Gremlins: The radio acting up, power windows moving slowly, or other weird electrical behavior can point to the alternator not providing stable power.
- Whining or Grinding Noises: A high-pitched whine or a grinding sound from the engine bay that changes with engine RPM often means the bearings inside the alternator are failing.
- Stalling or Difficulty Starting: If the alternator can't charge the battery, you'll eventually have a dead battery and a vehicle that won't start. In some cases, the engine can stall while driving if the alternator fails completely.
Major Recall for 2011-2014 Models
Many 2011-2014 Grand Cherokees were part of a massive safety recall (NHTSA Campaign 17V435, also known as T36) for alternators that could fail suddenly. This failure could cause the vehicle to stall without warning or even lead to a fire. The recall affected vehicles with 3.6L and 5.7L engines equipped with 160, 180, or 220 amp alternators. An earlier recall (NHTSA 14V-634) also targeted 160 amp alternators on 3.6L models from 2011-2014 for similar issues. While dealers were tasked with replacing these units, it's crucial to verify if your specific vehicle was affected and if the repair was completed.
Choosing the Right Aftermarket Alternator
When replacing your alternator, you don't have to buy an expensive OEM part from the dealer. The aftermarket offers several quality options. It's important to choose the correct amperage for your vehicle; check your original part or owner's manual. Grand Cherokees came with 160, 180, and 220 amp alternators depending on the engine and options.
Premium Brands (OEM Quality or Better)
- Bosch & Denso: These brands are often the original equipment manufacturers for many automakers, including Jeep. Choosing a new unit from Bosch or Denso is the closest you can get to factory quality, offering excellent reliability and longevity. Denso was the original supplier for the recalled alternators, but the replacement units feature improved components.
Mid-Tier & Value Brands
- Remy & WAI Global: These brands provide a good balance of quality and price. They produce new alternators that meet or exceed original specifications. While some user reviews mention occasional premature failures, they are generally considered solid choices for a daily driver.
- BBB Industries & MPA: These are other major players in the aftermarket, often supplying parts that are rebranded by retail stores. Quality is generally reliable for standard use.
High-Performance Brands
- Powermaster: If you've added significant electrical accessories like a winch, powerful audio system, or extensive off-road lighting, a high-output alternator from a brand like Powermaster or Mechman might be necessary. These are designed to provide more amperage than the stock unit, especially at idle.
| Part Type | Estimated Part Cost | Notes |
|---|---|---|
| New Aftermarket | $163 - $440 | Your best bet for reliability and value. Price varies by brand and amperage. |
| New OEM | $790 - $950+ | Highest cost, typically purchased from a dealership. |
| Shop Labor | $122 - $180 | Typically 1-1.5 hours of work. |
Frequently Asked Questions
Can I replace the alternator myself?
Yes, for a DIYer with intermediate skills, this is a manageable job. It typically takes 1.5 to 3 hours. You will need to disconnect the battery, release tension on the serpentine belt, and unbolt the alternator. Access is generally 🎬 Watch this helpful guide on removing the alternator from your Jeep. straightforward on both the 3.6L V6 and 5.7L V8 engines.
🎬 See this step-by-step replacement walkthrough for the 3.6L V6 engine.Do I need a 160, 180, or 220 amp alternator?
You must replace your alternator with one that has at least the same amperage rating as the original. Using a lower amp unit will cause it to fail prematurely. Check the label on your old alternator or consult your vehicle's build sheet to confirm the correct amperage. Upgrading to a higher amperage is generally fine, but not required for a stock vehicle.
What is the difference between a new and a remanufactured alternator?
A new alternator is built with 100% new components. A remanufactured (or rebuilt) unit uses the original housing, which is cleaned and inspected, and the internal wear items (like bearings, brushes, and the voltage regulator) are replaced. High-quality remanufactured units from brands like Bosch or Denso can be reliable, but new units from quality brands eliminate the risk of issues with the reused core.
My Grand Cherokee was part of the recall. Do I still need to worry?
If the recall work was performed by a dealer, your vehicle should have an updated alternator with improved components. However, if you bought the vehicle used, it's wise to check with a Jeep dealer using your VIN to confirm the recall was completed. If you are experiencing symptoms and the recall was done, the replacement part may have failed, though this is less common.
Helpful Videos
Technical Specifications
OEM Part Numbers: RL801779AG 4801779AG 4801778AF 4801834AB
Amperage ratings of 160A, 180A, or 220A are common. The specific amperage depends on the vehicle's engine (3.6L V6 or 5.7L V8) and optional equipment package (e.g., tow package, electro-hydraulic power steering). The alternator uses a serpentine belt with a clutched pulley.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Jeep Grand Cherokee:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Grand Cherokee's Alternator Failing?
- Key Warning Signs:
- Major Recall for 2011-2014 Models
- Choosing the Right Aftermarket Alternator
- Premium Brands (OEM Quality or Better)
- Mid-Tier & Value Brands
- High-Performance Brands
- Frequently Asked Questions
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