GMC Canyon Alternator Replacement Guide (2014-2022)
Keep your 2014-2022 GMC Canyon running strong by understanding when and how to replace a failing alternator.
- Common failure signs include a battery warning light, dimming or flickering headlights, and whining noises from the engine.
- Replacing the alternator is a moderately difficult DIY job that can take 1.5-2 hours; professional replacement costs between $658 and $894.
- ACDelco and Bosch are top-tier brand choices, offering OEM-level quality and reliability.
- It is highly recommended to replace the serpentine belt at the same time as the alternator to save on future labor.
Is Your Canyon's Alternator Failing?
A bad alternator can cause a lot of electrical problems. If you notice any of these signs, it's time to inspect your charging system. Ignoring them can lead to a dead battery and a truck that won't start.
Key Warning Signs:
- Battery Warning Light: The most obvious sign is a battery-shaped light on your dashboard. This means the electrical system has a problem, and the alternator is a likely cause.
- Dim or Flickering Lights: If your headlights or interior lights seem weak, flicker, or get brighter when you rev the engine, the alternator is probably struggling to provide consistent power. 🎬 Watch: A visual guide to common bad alternator symptoms
- Strange Noises: A whining or grinding sound from the engine that changes with RPM can point to bad bearings inside the alternator. A squealing noise could be a worn-out serpentine belt that drives the alternator.
- Slow or Dead Battery: If you need to jump-start your Canyon often, even with a newer battery, the alternator isn't doing its job of recharging it.
- Electrical Problems: Slow power windows, a radio that cuts out, or other weird electronic issues can happen when the alternator provides unstable voltage. 🎬 See how a pro diagnoses charging system problems
Important TSB Information
General Motors issued Technical Service Bulletin #24-NA-008 for some 2021 models. It warns that incorrectly installed parts could cause the positive battery cable to touch the alternator or water pump pulley, leading to electrical issues. While not a recall, it's something to be aware of during inspection or replacement.
Choosing the Right Aftermarket Alternator
When replacing the alternator on your Canyon, you have several choices. The quality of aftermarket parts can vary, but some brands offer reliability that is very close to the original factory part.
Brand Quality Tiers
- Top Tier (OEM Quality): ACDelco is the original equipment manufacturer (OEM) for General Motors. Choosing an ACDelco alternator, whether new or remanufactured, is the closest you can get to the original part your truck was built with. Bosch is another top-tier brand known for high-quality remanufactured alternators that meet or exceed factory standards.
- Mid-Grade (Reliable Aftermarket): Brands like Remy and MPA (Motorcar Parts of America) offer a good balance of price and quality. Remy has a long history, and MPA's Quality-Built line is well-regarded. These are solid choices for a daily driver.
- Economy (Budget-Friendly): BBB Industries is a large remanufacturer that supplies parts for many store brands. While they can be a budget-friendly option, some users report mixed experiences with longevity.
Pro Tip: New vs. Remanufactured
A "new" aftermarket alternator is made with all-new components. A "remanufactured" one is an original OEM core that has been completely disassembled, cleaned, tested, and rebuilt with new wear-and-tear components like bearings and brushes. A high-quality remanufactured unit from a brand like ACDelco or Bosch can be just as reliable as a new one and is often a better value.
GMC Canyon Alternator Cost Comparison
The cost of replacing your alternator depends on the part you choose and whether you do the work yourself or hire a professional.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Alternator | $154 - $453 |
| Shop Labor | $162 - $238 |
| Total Professional Replacement | $658 - $894 |
Frequently Asked Questions
Is it difficult to replace the alternator on a 2014-2022 GMC Canyon?
For a DIYer with some experience, it's a manageable job. It requires basic hand tools, removing the serpentine belt, and accessing bolts that can be in tight spaces. The difficulty is moderate, and it can take 1.5 to 2 hours.
🎬 Watch this step-by-step 3.6L V6 alternator replacement walkthroughDo I need to replace the serpentine belt with the alternator?
It's highly recommended. The serpentine belt has to be removed to replace the alternator, so it's the perfect time to install a new one for a small additional cost. This prevents you from having to do the labor all over again if the old belt fails soon after.
What amperage alternator do I need for my GMC Canyon?
Most GMC Canyons in this year range use a 150-amp alternator. It's crucial to check the specifications for your exact model and engine (2.5L, 3.6L, or 2.8L Diesel), as some may differ. Always match the new part to the original's specifications.
Were there any recalls for the GMC Canyon alternator?
No specific recalls were found for the alternator itself on 2014-2022 models. However, recall 19V-888 was issued for a related issue where excess glue on the B+ battery cable connection to the alternator could cause a poor connection, stalling, or fire risk. Recall 18V358 involved a high-pressure fuel pump that could damage a fuel line near the engine, but was not directly an alternator issue.
Helpful Videos
Technical Specifications
OEM Part Numbers: 13597236 13588313 13502988
Most models use a 12V, 150 Amp alternator with a 6-groove pulley and clockwise rotation. However, always verify the amperage and fitment for your specific engine and year before purchasing.
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.
- GMC Canyon: