702 Troubleshooting
Don’t Google
your truck.
Diagnose it.
Submit your codes, symptoms, photos, and video. Pocket Tech returns a structured, vehicle-specific diagnostic plan that helps you test the problem before replacing parts.
Your mechanic, in your pocket.
Supported Platforms
We Work On Major Diesel Platforms
Cummins, Power Stroke, Duramax, Caterpillar, PACCAR, and Detroit engines — structured diagnostic support for the platforms that power America's work.
Cummins
Power Stroke
Duramax
Caterpillar
PACCAR
Detroit
Pocket Tech is an independent diagnostic service. We are not affiliated with, authorized by, or representing any manufacturer. We use manufacturer names only to describe the engine platforms we support.
The Process
How It Works
Four steps from your broken-down truck to a structured diagnostic plan — from your driveway, your jobsite, or the side of the road.
- STEP 1
Tell Us What’s Wrong
Share your truck’s year, make, model, engine, and symptoms. Describe the problem in plain language—no shop talk required.
- STEP 2
Upload Codes, Photos & Video
Send trouble codes, engine-bay photos, scan-tool screenshots, videos, and information about previous diagnostic work.
- STEP 3
We Analyze the Information
Your submission is reviewed and organized using vehicle-specific diagnostic logic and practical mechanical knowledge.
- STEP 4
Receive Your Diagnostic Plan
Get a structured, step-by-step troubleshooting plan focused on what to test next and what the results mean.
The Foundation
Real-World Diesel Experience
Built around practical diagnostic experience — not just generic internet answers.
Practical Mechanical Knowledge
Real-world mechanical knowledge supported by modern diagnostic technology. Every diagnostic plan is based on how these systems actually fail and what tests actually isolate the problem.
Not Generic Answers
Generic forum posts and YouTube videos give you thousands of possibilities. Pocket Tech focuses on your specific vehicle, symptoms, trouble codes, photos, and test results to determine what to check next.
GOOGLE GIVES YOU INFORMATION.
POCKET TECH GIVES YOU A DIAGNOSTIC PLAN.
Instead of sorting through thousands of search results, Pocket Tech focuses on your specific vehicle, symptoms, trouble codes, photos, videos, and test results.
The Difference
Why Pocket Tech
Forum guesses and generic videos cost you money — in parts you didn’t need and downtime you didn’t plan for. Pocket Tech replaces guesswork with a structured diagnostic process.
Vehicle-Specific Troubleshooting
No generic forum advice. Every plan is built around your exact year, make, model, and engine platform.
Step-by-Step Diagnostic Testing
Clear, ordered tests that isolate the root cause — from quick checks to deeper electrical and mechanical verification.
Prevents Unnecessary Parts Replacement
The parts cannon stops here. Test first, buy second — and only replace what the data proves has failed.
Real Mechanical Knowledge + Modern Technology
Decades of real-world diesel experience combined with modern diagnostic technology behind the scenes.
Diagnostics that come to you
Owner-operators, contractors, and small fleets — handled remotely, nationwide.
Coverage
What We Help With
If your diesel pickup is acting up, start here. Every review covers your specific platform — not a one-size-fits-all checklist.
Diesel Engine Problems
Rough running, power loss, smoke, consumption, and performance issues.
Diagnostic Trouble Codes
Code analysis and pinpoint testing for active, pending, and stored DTCs.
Electrical Problems
Wiring, grounds, shorts, voltage drops, and no-start electrical diagnosis.
Sensors
MAP, MAF, IAT, EGT, fuel pressure, position sensors — tested, not guessed.
Turbo / Boost Issues
Low boost, overboost, VGT actuation, charge air leaks, and turbo performance.
Aftertreatment Systems
DPF, DEF, SCR, regen problems, derates, and emissions-related codes.
Drivability Problems
Surging, hesitation, stalling, shudder, and transmission-related complaints.
HVAC
Heating, A/C, blend door, and climate control electrical diagnosis.
Starting Problems
Crank-no-start, no-crank, glow plug, fuel delivery, and immobilizer issues.
Other Diesel Troubleshooting
If it’s on a diesel pickup, we can help you figure it out. Ask us.
Something not listed?
Submit it anyway. If it’s diesel and it’s in a pickup, there’s a diagnostic path for it.
Start My DiagnosisOne Truck. One Problem. One Price.
What You Get for $49
Know what to test before you start replacing parts.
Per Vehicle, Per Problem
-
Vehicle-Specific Review
Your truck, engine, symptoms, trouble codes, and diagnostic history.
-
Likely Causes
The most likely systems or components to investigate based on the information provided.
-
Diagnostic Tests
Specific tests or checks to perform before replacing parts.
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Understand the Results
An explanation of what your test results mean and what to check next.
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Digital Diagnostic Plan
A clear, step-by-step troubleshooting plan you can follow.
Don't Replace the Part Until You Know It's the Problem.
Submit your vehicle information and diagnostic details — you’ll receive confirmation and next steps after your intake is reviewed.
Answers
Frequently Asked Questions
What do I get for the $49 Diagnostic Review?
Can I upload pictures or videos?
What if the first test doesn't find the problem?
Why use Pocket Tech instead of Google?
Do I need to be a mechanic?
What vehicles do you support?
Is this a guaranteed diagnosis?
How does a remote diagnostic review work?
Do you perform repairs?
How fast will I get my diagnostic plan?
Stop guessing.
Stop throwing parts at it.
Diagnose first.
One $49 diagnostic review. Structured troubleshooting. Know what to test before you replace anything.
Start My Diagnosis — $49