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Marietta & Cobb County • GM Luxury & Truck Specialists
GMC & Cadillac Repair in Marietta, GA
Dealer-Level Diagnostics, OEM Parts & Performance Tuning for Every GMC & Cadillac
From Sierra trucks to Escalade SUVs, our certified GM technicians keep your vehicle running flawlessly.
100%
OEM GM Parts Used
20+
Years GM Experience
5,000+
GMC & Cadillac Serviced
4.9★
Google Rating
Why Choose 875 Performance for GMC & Cadillac Repair
Expert GMC & Cadillac Repair in Marietta GA
GMC and Cadillac vehicles combine American luxury, capability, and advanced technology, each requiring specialized tools and expertise. At 875 Performance, we use factory diagnostic software (GDS2/Tech2Win), OEM parts, and manufacturer torque specifications on every repair. Whether you drive a Sierra, Yukon, Escalade, or CT5, our technicians have the knowledge to diagnose and fix any issue correctly the first time.
From oil changes and brake jobs to engine repairs and transmission service, we provide dealership-quality care without the dealership markup. Pair your GM repair with our factory scheduled maintenance or performance tuning services.
GMC & Cadillac Repair Services
Complete GM Service in Marietta, GA
We handle every aspect of GMC and Cadillac repair and maintenance, from routine service to complex mechanical and electrical work.
Engine Repair & Rebuilds
Duramax diesel, EcoTec3, 6.2L V8, and 2.0L Turbo engine repair. Timing chains, head gaskets, AFM/DFM system repairs, oil leaks, cooling system repairs, and complete overhauls.
Transmission Service
6L80, 8L90, 10L90, and 9T50 automatic transmission repair, fluid flushes, valve body repair, and complete rebuilds.
Brake Repair
Pads, rotors, calipers, and ABS system repairs using OEM or high-performance components. Full fluid flush.
Suspension & Steering
Magnetic Ride Control, air suspension, control arms, bushings, struts, power steering rack repair, and wheel alignment. Lift kit installation available.
Electrical & Diagnostics
Dealer-level GDS2 diagnostics, battery registration, module coding, and electrical troubleshooting for all GMC and Cadillac models.
Performance Tuning
ECU tuning, supercharger kits, exhaust systems, and performance suspension. Unlock your GMC or Cadillac’s full potential.
Why Choose 875 Performance Over the GM Dealer?
Independent GM Specialist vs. Dealership
Get dealership-level expertise without the dealership pricing. We use the same OEM tools and parts.
| Feature | GM Dealership | 875 Performance |
|---|---|---|
| OEM GM Parts | ✓ | ✓ |
| Factory Scan Tools & Coding | ✓ | ✓ |
| Transparent Pricing | ✗ | ✓ Upfront quotes |
| Performance Tuning | ✗ | ✓ Dyno tuning available |
| Direct Technician Access | ✗ | ✓ Talk to your tech |
| Warranty-Safe Documentation | ✓ | ✓ |
| Savings vs Dealer | – | ✓ 40-60% less |
Our GMC & Cadillac Repair Process
4-Step GM Service
We diagnose accurately, use OEM parts, and verify our work.
01
Diagnostic Scan
We connect factory GDS2/Tech2Win scan tools to read all fault codes and module data from your GMC or Cadillac.
02
Transparent Estimate
You receive a detailed digital quote before any work begins.
03
OEM Repair
We perform the repair using genuine GM parts and factory torque specs.
04
Verification & Test Drive
We road test, clear codes, and provide a digital report.
GMC & Cadillac Owner Reviews
What Marietta GM Drivers Say
“They replaced the timing chain on my Sierra Denali. Dealer wanted $3,800, 875 Performance did it for $2,300 with OEM parts. Truck runs perfectly. Highly recommend.”
“They diagnosed a faulty 8L90 valve body on my Escalade. Two other shops couldn’t figure it out. They used GDS2 software and fixed it same day. Very knowledgeable.”
“They performed a full suspension overhaul on my Yukon Denali. Rides like new again. Much more affordable than the dealer and they let me watch the repair.”
GMC & Cadillac Service Coverage
What’s Included in Our GM Repair Service
Every GMC and Cadillac repair at 875 Performance includes meticulous attention to detail.
GDS2/Tech2Win Diagnostic Scan
OEM GM Parts
Battery Registration
Module Coding
Torque-to-Spec Assembly
Road Test & Verification
Digital Service Report
Warranty-Safe Documentation
Old Parts Return
GMC & Cadillac Repair FAQs
Frequently Asked Questions About GM Repair in Marietta GA
What GMC and Cadillac models do you service in Marietta GA?
We service all GMC models including Sierra, Yukon, Terrain, Acadia, and Canyon, and all Cadillac models including Escalade, CT4, CT5, XT4, XT5, XT6, and LYRIQ. Our technicians use factory diagnostic tools and OEM parts.
Do you use genuine GM OEM parts for GMC and Cadillac?
Yes, we use genuine GM OEM parts or OEM-equivalent components to maintain performance and warranty compliance.
Can you perform GMC and Cadillac software updates and coding?
Yes, we use dealer-level diagnostic scan tools (GDS2/Tech2Win) to perform software updates, module coding, and service resets on all GMC and Cadillac vehicles.
How much does GMC or Cadillac repair cost in Marietta?
Costs vary depending on the repair. We provide transparent digital estimates before any work begins. Our pricing is typically 40-60% lower than GM dealerships.
Book GM Service
Request a GMC or Cadillac Repair Quote
Marietta GM Repair Facility
875 Performance
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3268 Fairview Dr, Marietta, GA 30066
(Near Canton Rd & Bells Ferry Rd Corridor) - (470) 888-0875
- [email protected]
-
Mon – Fri: 9:00 AM – 5:00 PM
Saturday: By Appointment
Sunday: Closed
GMC & Cadillac Service Coverage
Serving Marietta & Surrounding Communities
GMC and Cadillac repair and maintenance for drivers throughout Cobb County and North Atlanta.
Marietta (30066 / 30062 / 30060)
East Cobb
Kennesaw (30144 / 30152)
Acworth (30101 / 30102)
Smyrna (30080)
Roswell (30075)
Woodstock (30188 / 30189)