The Best GMC Repair in East Chicago, IN

Compare the highest-rated gmc repair mechanics in East Chicago, Indiana. All shops are licensed, insured, and verified through our rigorous screening process.

#1

G & M Auto Service Inc.

4.7
(187 reviews)
Verified

A family-owned and operated auto repair shop with a long-standing reputation for honesty and expertise in domestic trucks and SUVs. They are known for their advanced diagnostic capabilities, particularly with GM vehicles, and have technicians experienced with diesel engines and complex electronic systems.

4415 Indianapolis Blvd, East Chicago, IN 46312

Specialties & Features

EcoTec engine diagnostics
Allison transmission service
4WD and towing system service

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#2

Munster Transmissions & Auto Repair

4.8
(264 reviews)
Verified

While located just across the border in Munster, this shop is a regional leader for transmission and drivetrain repair, serving the entire Northwest Indiana area, including East Chicago. They are an authorized Allison Transmission specialist and frequently work on heavy-duty GMC trucks like the Sierra 2500/3500.

9440 Calumet Ave, Munster, IN 46321

Specialties & Features

Allison transmission repair
Duramax diesel service
Heavy-duty truck suspension

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes
#3

Certified Auto Specialists

4.5
(112 reviews)
Verified

This shop has built a strong reputation for tackling complex electrical and computer-related issues in modern vehicles. They are a top choice for owners of GMC Denali models experiencing problems with infotainment systems, advanced driver-assistance features (ADAS), and other luxury electronics.

3901 Main St, East Chicago, IN 46312

Specialties & Features

Denali luxury features and electronics
Towing package maintenance
EcoTec engine diagnostics

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes

Why These Are the Top GMC Repair Auto Repair Shops in East Chicago

** The GMC repair market in East Chicago is characterized by a few highly skilled independent shops that have earned strong community trust, rather than a high volume of dealership-level competitors. The average quality of specialized repair is good, with several shops possessing the technical knowledge to service complex systems like Duramax engines and Allison transmissions. Competition is moderate but focused on expertise and reputation rather than price alone. Typical pricing for specialized services is in line with regional averages: diagnostic fees range from $125-$200, Duramax injector replacement can run $2,500+, and Allison transmission service typically costs $250-$400. Customers in this market heavily value longevity, transparency, and proven expertise, which the top providers have successfully demonstrated over many years. For the most complex warranty or proprietary software issues, residents often travel to larger GM dealerships in Merrillville or Schererville, but for all other repairs, the local independent specialists are the preferred choice.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All shops are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with East Chicago regulations and climate