Schedule GMC Service in Hammond, LA
Use the scheduler above to book GMC service at Ross Downing GMC in Hammond, LA at any hour, or call the service department at 985-222-2386, open Monday through Friday 7:30 AM to 6:00 PM. Mention a coupon code when you book, and new GMC owners can ask about the first scheduled service visit at no additional charge.
- Mon to Fri, 7:30 AM to 6 PMservice hours; closed Saturday and Sunday
- Service 985-222-2386parts 985-543-6833
- 9 priced couponsmention the code when you book
- 1301 S Morrison BlvdHammond, LA, minutes from I-12 and I-55
Hours and coupon count are current as of October 22, 2026.
Book GMC Service Online in Hammond
Ross Downing GMC's online scheduler books GMC Certified Service appointments for drivers in Hammond, Ponchatoula, Covington, Mandeville and Slidell. Pick the service and a time that works, and the visit is at 1301 S Morrison Blvd, whether or not you bought your GMC here.
What Can I Book Online?
The scheduler books routine maintenance and repairs on GMC trucks and SUVs, including oil changes, tire rotation and tires, brakes, batteries, multi-point inspections, transmission service and diagnostics. Each service below links to its page with details and current coupons.
Maintenance
- Oil change and tire rotation
- Tires, rotation and alignment
- Battery test and replacement
- Multi-point vehicle inspection
Repairs
- Brake pads and rotors
- Transmission service
- Diagnostics with GM essential service tools
- Warranty and recall repairs
Services from the Ross Downing GMC service department and GMC Certified Service.
What to Have Ready When You Book
Have your GMC's year, model and mileage, your VIN if you have it, any coupon code you plan to use, and a short description of any warning light or concern. For a recall, check your VIN for open recalls first; for a first service visit on a new GMC, mention it when you book.
Your vehicle
- Year, model and trim
- Current mileage
- 17-character VIN
- Any warning lights or noises
Your visit
- The service you need
- Coupon code from the coupons page
- A phone number for updates
- A day and time that works for you
Service Hours and Contact
The service department is open Monday through Friday 7:30 AM to 6:00 PM, and the parts counter is open Monday through Friday 7:30 AM to 5:30 PM; both are closed Saturday and Sunday. Online scheduling is open around the clock.
| Department | Hours | Phone |
|---|---|---|
| Service | Monday to Friday, 7:30 AM to 6:00 PM | 985-222-2386 |
| Parts | Monday to Friday, 7:30 AM to 5:30 PM | 985-543-6833 |
| Sales | Monday to Friday, 8:30 AM to 7:30 PM; Saturday, 9:00 AM to 5:30 PM | 985-227-4018 |
Hours from Ross Downing GMC as of October 22, 2026.
Why Schedule Your GMC Service at Ross Downing GMC
Ross Downing GMC is a GMC Certified Service center at 1301 S Morrison Blvd in Hammond, with technicians trained in GMC-specific service and repair, GM Genuine Parts and ACDelco parts, and posted coupon prices. GMC says warranty repairs must be performed at a GMC dealership; book online or call 985-222-2386.
GMC Service Appointments Near Hammond, Ponchatoula and Covington
Ross Downing GMC books service for GMC owners from Ponchatoula, Amite, Independence, Covington, Mandeville, Madisonville and Slidell, plus drivers from Metairie and New Orleans. The service drive is at 1301 S Morrison Blvd in Hammond, minutes from I-12 and I-55.
GMC Service Scheduling Questions
Can I schedule GMC service online?
Yes. Use the scheduler on this page to pick a service and time at any hour, or call the service department at 985-222-2386, open Monday through Friday 7:30 AM to 6:00 PM.
What are the Ross Downing GMC service hours?
The service department is open Monday through Friday 7:30 AM to 6:00 PM, and the parts counter is open Monday through Friday 7:30 AM to 5:30 PM. Both are closed Saturday and Sunday.
Is the service department open on Saturday?
No. Service and parts are open Monday through Friday; sales is also open Saturday. You can request a service appointment online any time.
How do I use a service coupon?
Mention the coupon code when you book online or call 985-222-2386. Coupon prices exclude tax, and each coupon lists its exclusions and end date.
Can I book the free first service visit on a new GMC?
According to GMC, new GMC owners get their first scheduled service visit at a participating GMC dealership for no additional charge, with an oil and filter change, a four-tire rotation and a multi-point inspection. Mention it when you book and ask whether your vehicle qualifies.
Can I schedule service if I did not buy my GMC here?
Yes. Ross Downing GMC services GMC trucks and SUVs no matter where they were bought.
Where is the Ross Downing GMC service department?
At 1301 S Morrison Blvd in Hammond, LA, minutes from I-12 and I-55. Call service at 985-222-2386.
Can I schedule recall or warranty work?
Yes. GMC says warranty repairs must be performed at a GMC dealership, and Ross Downing GMC handles warranty and recall repairs; book online or call 985-222-2386.