John Loper II 0a2d660494 docs: Update Fuel Pressure Issue - Root cause is failing battery, not fuel system
- README.md: Marked Fuel Pressure Issue as RESOLVED (battery replacement needed)
- FuelPressureIssue/README.md: Updated to reflect battery as sole root cause
- FuelPressureIssue/progress.md: Added battery replacement steps, updated history

The van wouldn't start when battery was weak due to voltage sag preventing fuel pump from building proper pressure. When battery is charged, fuel pump builds full pressure immediately. No fuel pump or filter replacement needed.
2026-03-27 14:46:30 -04:00

2002 Chevrolet Express 3500 - Vehicle Maintenance Tracker


🚗 Vehicle Information

Field Value
Year/Make/Model 2002 Chevrolet Express 3500
VIN 1GAHG39R821226228
Engine 5.7L V8 (L31 Vortec)
Horsepower 258 HP @ 4,600 rpm
Torque 330 lb-ft @ 2,800 rpm
Transmission 4-speed Automatic (4L80-E heavy-duty)
Drivetrain RWD
Fuel Capacity 31 gallons
Curb Weight 4,849 lbs
Max Towing Capacity 8,000 lbs
Wheelbase 135.0 inches (standard) / 155 inches (extended)
Overall Length 218.8 inches (standard) / 238.8 inches (extended)
Overall Width 79.2-79.4 inches
Overall Height 82.5-82.8 inches
Tire Size P245/75R16
Rim Size 16" steel
Valve Configuration OHV (16-valve)
Compression Ratio 9.4:1
Engine Oil Capacity 5.1 quarts (5W-30)
Brakes (Front) Dual Hydraulic Disc
Brakes (Rear) Dual Drum Brakes
Front Suspension MacPherson Strut with Double Tube dampers
Rear Suspension Multi-Link Coil Springs with Double Tube dampers
Headlight Bulb 9007 Halogen
Mileage 303,770 miles (as of 2026-03-23)
Date Started 2026-03-20

🔍 VIN Decoder Reference

VIN Format: 1GAHG39R821226228
Decoder URL Pattern: https://www.decodethis.com/vin/[VIN]

VIN Breakdown:

  • 1 = United States (Manufacturer)
  • G = General Motors
  • A = Chevy
  • H = GVWR Range 9001-10000 lbs
  • G3 = Express 3500 (1-ton)
  • 9 = Brake System - Hydraulic
  • R = 5.7L V8 Gasoline Engine (8th digit = engine code)
  • 8 = Check Digit
  • 2 = Model Year 2002
  • 1 = Assembly Plant
  • 226228 = Production Sequence Number

📋 Project Overview

This repository tracks all maintenance, repairs, and issues for the 2002 Chevy Express 3500. Each subfolder represents a specific issue or maintenance task with its own progress tracking.

Current Issues/Projects:

Vehicle Specifications:

  • Engine Oil: 5W-30, ~6 quarts with filter
  • Transmission Fluid: DEXRON-III ATF
  • Power Steering Fluid: DEXRON-III ATF
  • Spark Plugs: 8x (exact type TBD - need VIN lookup)
  • Fuel System: Electronic Fuel Injection (EFI), 55-62 PSI operating pressure

Maintenance History:

  • 2026-03-21: Distributor cap and rotor replaced - Crank no-start resolved
  • 2026-03-21: Power steering leak project initiated
  • 2026-03-21: Fuel pressure issue diagnosed - weak fuel pump identified, replacement needed

Notes:

  • Fuel pump confirmed weak - 37 PSI residual, requires 2 primes to reach 50 PSI
  • Check valve is working fine (good pressure retention)
  • Crankshaft position sensor (CKP) had history of issues on this vehicle
  • Distributor corrosion is a recurring issue (~1x/year) on this van
  • P0300 code - Random misfire code from crank no-start diagnosis (2026-03-20), should clear after fuel system repair
  • Spark plugs - All 8 need replacement (matching set), low priority, pending fuel system repair first

Documentation:

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2002 Chevrolet Express 3500 - Vehicle maintenance tracker
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