General Motors has three main ways to handle complaints: the dealer service department, GM's customer service line, and the National Highway Traffic Safety Administration if the issue involves safety.

If you own or lease a General Motors vehicle and have a problem—whether it's a mechanical defect, service issue, or billing dispute—the fastest route depends on what went wrong and whether you've already tried to fix it through your dealer. Most complaints get resolved at the dealership level first. If that doesn't work, GM's customer service team can escalate the issue or file a formal complaint in your vehicle's record.

The dealer service department is where most problems start because they have access to your vehicle's warranty and service history. If you're unhappy with how the dealer handled your complaint, that's when you move to GM's corporate customer service line. For safety defects—brakes that fail, airbags that don't deploy, steering problems—you may also want to report to the National Highway Traffic Safety Administration (NHTSA), which tracks patterns across vehicles and can trigger recalls.

Key Takeaways

  • Start with your GM dealership's service department, which can often resolve mechanical problems, warranty claims, and service disputes on the spot.
  • GM's customer service line at 1-800-462-8342 handles complaints the dealer couldn't resolve and creates a formal record in your vehicle file.
  • Safety defects should also be reported to NHTSA at safercar.gov or 1-888-327-4236, which investigates patterns and can order recalls.
  • Have your Vehicle Identification Number (VIN), service records, and a clear description of the problem ready before you call.
  • If your complaint involves a lemon law claim, your state's attorney general office can tell you whether your vehicle meets the legal definition.

When to Call the Dealership Service Department First

Your GM dealership is the first place to report any problem covered by warranty or any service issue. The service advisor can check your vehicle's history, see if the problem is a known issue, and often fix it without you having to escalate. If your vehicle is still under the factory warranty (typically three years or 36,000 miles for most GM vehicles), the dealership will handle repairs at no cost to you.

Bring your keys, your service records, and a clear description of what's happening—when the problem started, under what conditions, and how often it occurs. The service department will create a work order with your complaint documented. Keep a copy of this work order; you'll need it if you have to escalate to GM's corporate office or file a lemon law claim later.

If the dealership tells you the problem is not covered by warranty or refuses to repair it, ask to speak with the service manager. If that doesn't resolve it, that's when you move to GM's customer service line.

How to Reach GM Customer Service

GM's customer service line is 1-800-462-8342. This number connects you to GM's customer care team, which handles complaints that the dealership couldn't resolve, warranty disputes, and service billing issues. They can also file a formal complaint in your vehicle's record, which matters if you later pursue a lemon law claim.

When you call, have your VIN ready (you'll find it on your registration or on the driver's side of the dashboard where it meets the windshield). Also have your service records, the work order from the dealership, and a timeline of what happened. Explain what the problem is, when it started, what the dealership did or didn't do, and what outcome you're looking for.

GM's customer service team can authorize additional repairs, issue a goodwill adjustment (a partial refund or credit), or escalate your case to a regional manager. The call is documented in your vehicle file, which creates a paper trail if you need to pursue further action. Ask for a case number and follow-up timeline before you hang up.

Reporting Safety Defects to NHTSA

If your complaint involves a safety issue—brakes that fail, airbags that don't deploy, steering that locks up, sudden acceleration, or electrical fires—report it to the National Highway Traffic Safety Administration (NHTSA) in addition to contacting GM. NHTSA tracks complaints across all vehicles and uses patterns to investigate whether a recall is needed.

You can report online at safercar.gov, which is NHTSA's complaint database. You can also call NHTSA's hotline at 1-888-327-4236. Have your VIN, the date the problem occurred, and a description of what happened. NHTSA will assign your complaint a number and add it to their database. You don't have to be the original owner to file a complaint.

NHTSA complaints are public record and searchable by VIN. If many people report the same problem, NHTSA may open an investigation, which can lead to a recall. Even if a recall isn't issued, your complaint is part of the official record and can support a lemon law claim.

Understanding Lemon Law and When to Use It

If your vehicle has a defect that the dealership can't fix after multiple attempts, or if it's been out of service for a long time due to repairs, you may have a lemon law claim. Lemon laws vary by state, but most require that the vehicle be repaired within a certain number of days or attempts while still under warranty. If the manufacturer can't fix it, you may be may have access to to a replacement vehicle or a refund.

To pursue a lemon law claim, you need documentation: service records showing the problem and repair attempts, the work orders from the dealership, and the case number from GM's customer service. Your state's attorney general office or consumer protection agency can tell you whether your vehicle meets your state's lemon law definition and what steps to take next.

Some states require you to give the manufacturer one final chance to repair the vehicle before you file a claim. GM's customer service line is where you formally request this final repair attempt. If it fails, you can then pursue a lemon law claim through your state's process or with a lawyer who handles lemon law cases.

What to Do If You're Not Satisfied With GM's Response

If GM's customer service doesn't resolve your complaint to your satisfaction, you have several options. You can request escalation to a regional manager or the GM customer advocacy team. You can also file a complaint with your state's attorney general office or consumer protection agency, which can investigate and pressure GM to respond.

If your complaint involves a safety defect and NHTSA opens an investigation, that investigation is separate from your personal complaint and may result in a recall regardless of whether GM resolves your individual case. You can also consult with a lawyer who handles lemon law or consumer protection cases; many offer free initial consultations.

Keep all documentation: service records, work orders, case numbers, dates of calls, and names of people you spoke with. This paper trail is what gives your complaint weight if you need to escalate further.

Frequently Asked Questions

What's the difference between calling the dealership and calling GM customer service?

The dealership fixes your vehicle and handles warranty repairs. GM customer service handles complaints about how the dealership treated you, disputes over warranty coverage, and creates a formal record of your complaint in your vehicle file. If the dealership won't help, GM customer service can override them or authorize additional repairs.

Do I need to report to NHTSA if I already called GM?

If your problem is a safety defect, yes—report to both. GM and NHTSA are separate systems. NHTSA tracks patterns across all vehicles and can order recalls. Your report to NHTSA is independent of your complaint to GM and helps protect other owners of the same vehicle.

How long does it take to hear back from GM customer service?

GM typically responds within 5 to 10 business days, though complex cases may take longer. Ask for a specific follow-up date when you call. If you don't hear back by that date, call again and reference your case number.

Can I get a refund or replacement vehicle if my car keeps breaking down?

That depends on your state's lemon law and how many times the vehicle has been repaired. Most states require multiple repair attempts or a certain number of days out of service while under warranty. Your state's attorney general office can tell you whether your situation qualifies and what your options are.

What if the dealership says my problem isn't covered by warranty?

Ask the service manager to explain why in writing. If you disagree, call GM customer service and dispute the warranty information. GM can review the case and may authorize the repair even if the dealership initially refused. Bring your service records and the dealership's written explanation.