Our Services

Ten specialties. One team.

Specialized solutions for trucks, commercial vehicles and automobiles — combining mechanical work, advanced electronic diagnostics, programming, performance tuning and system integration. Our goal is not simply to replace parts, but to identify the cause of each problem and deliver a complete solution.

01
Mechanical Repair & Maintenance

Truck & Auto Repair

Professional repair and maintenance service for trucks and vehicles.

View service
02
Electronic, Electrical & Mechanical Diagnostics

Advanced Diagnostics

We use professional diagnostic tools and software to identify mechanical, electrical and electronic problems.

View service
03
Module Programming & Configuration

ECM / ECU / TCM / ACM Programming

Specialized programming, configuration and diagnostics of electronic control modules.

View service
04
Diesel & Gas Performance Solutions

Performance Tuning

Calibration and tuning services aimed at optimizing vehicle performance for its application.

View service
05
Engine Conversions & Complete Electronic Integration

Engine Swaps & Custom Integration

Our work does not end with physically installing an engine. We integrate the systems needed to make the new engine work correctly with the vehicle.

View service
06
Wiring, Harness Modification & Electronic Integration

Custom Wiring & Harness Solutions

Wiring solutions for repairs and custom projects.

View service
07
Testing, Diagnostics & Programming

Module & Bench Services

GCP is building out specialized capability to diagnose, test and program modules outside the vehicle.

View service
08
Electronic Transmission Solutions

Transmission Diagnostics & Programming

Diagnostics, programming and integration of electronic transmission systems.

View service
09
Complex System Diagnostics & Repair

Electrical & Electronic Systems

Diagnostics and repair of complex electrical and electronic systems.

View service
10
When Standard Solutions Are Not Enough

Custom Projects

Not every problem can be solved by simply replacing a part. GCP takes on custom projects that combine several disciplines at once.

View service
11
Communication Network Diagnostics

CAN Bus & J1939 Network Repair

Network-level diagnosis and repair for modules offline, intermittent communication, wiring faults, opens, shorts and termination problems.

View service →
12
Commercial Fleet Support

Fleet Services

Recurring repair, diagnostics, programming and preventive support for owner-operators and commercial fleets.

View service →
DPF
DPF, SCR, DEF & Regeneration

DPF & Aftertreatment Diagnostics

System-level diagnostics for high soot, repeated regens, derates, sensors and aftertreatment fault codes.

View service

The Difference

Integration is where projects succeed or fail

Anyone can bolt an engine in. The hard part is everything after: getting the ECM to talk to the transmission, the dash to read correctly, the throttle pedal to be recognized, the sensors to report real values, and the cab switches to control what they're supposed to control.

That's the work we specialize in — and it's why projects that stalled somewhere else end up here.

Talk About Your Project

Systems we bring together

Engine+ECM+Transmission+Harness+Instrument Cluster+Cab Controls
TCMACMVECUAccelerator PedalSensorsActuatorsCAN / J1939

Configured, programmed and validated until the whole assembly behaves as one system.

Not sure which service you need?

Describe the symptoms and the codes. We'll tell you where to start.

+1 (347) 863-8610 Send Details

Our Approach

Diagnose. Repair. Program. Integrate. Perform.

From a conventional repair to a complete engine conversion, harness modification, module programming or electronic integration — a professional solution from the initial diagnosis to final commissioning.

01

Evaluation

We listen to the history of the unit, scan every module and map what the vehicle is actually reporting — not just the first code.

02

Diagnosis

Circuit, sensor, network and bench testing to isolate the true root cause before a single part is ordered.

03

Solution

Repair, wiring, programming or full integration — with the scope, timeline and cost agreed before we start.

04

Validation

Parameters set, adaptations run, codes cleared and the unit tested under load until it performs the way it should.

CallWhatsAppRequest