State Inspection

This procedure covers the complete state safety inspection process for a 2014-2018 Chevrolet Silverado 1500 with 5.3L V8, including exterior lighting, brakes, steering, suspension, tires, and emissions systems verification.

Warnings

Tools required

Preparation

1. Start engine and allow to reach full operating temperature (coolant at normal range)
2. Verify registration and vehicle identification number (VIN) match inspection paperwork
3. Ensure vehicle has adequate fuel (at least 1/4 tank) for emissions testing
4. Park vehicle on level surface and set parking brake
5. If using lift, position vehicle properly on lift arms at designated lift points under frame rails

Procedure

1. 1

   Perform OBD-II System Check
   Connect OBD-II scanner to diagnostic port located under driver side dashboard. Turn ignition to ON position without starting engine. Check for readiness monitors - all emissions monitors except EVAP and O2 sensor heater may show 'not ready' on recent battery disconnect, but most must show 'ready' for inspection pass. Scan for diagnostic trouble codes (DTCs). Any active emissions-related codes will result in inspection failure. Record any codes present.
2. 2

   Inspect Exterior Lighting Systems
   Check all exterior lights for proper operation: headlights (low and high beam), turn signals (front and rear), brake lights, reverse lights, license plate light, and side marker lights. Verify headlight aim is within specification using wall pattern or aim tool. Check for cracked or broken lenses. Test hazard flasher function. Verify daytime running lights operate correctly if equipped.
3. 3

   Check Horn and Windshield Components
   Test horn for proper operation and adequate sound level. Inspect windshield for cracks or chips in driver's field of view - any crack longer than 6 inches or chip larger than 1.5 inches in critical viewing area typically fails inspection. Test windshield wipers for proper operation and blade condition. Verify washer fluid sprays adequately on windshield. Check windshield washer fluid level and top off if needed.
4. 4

   Inspect Steering and Suspension from Inside Cab
   With engine running and vehicle stationary, turn steering wheel lock-to-lock checking for excessive play (more than 2 inches of wheel movement before tire movement indicates wear). Listen for unusual noises. Check steering column for secure mounting and proper collapse mechanism integrity. Verify steering wheel is not cracked or damaged. Test parking brake engagement - should hold vehicle on grade and engage with appropriate clicks.
5. 5

   Test Brake System Performance
   With engine running, pump brake pedal several times and hold firm pressure. Pedal should feel firm and not sink slowly to floor. Verify brake warning light illuminates with ignition on and extinguishes after engine start (with parking brake released). Check brake fluid level in master cylinder reservoir - fluid should be between MIN and MAX marks. Inspect fluid color (should be clear to light amber, dark fluid indicates contamination). Test service brakes at low speed for pulling or grabbing.
6. 6

   Inspect Tires and Wheels
   Check all four tires plus spare for proper tread depth using tread depth gauge - minimum legal depth is typically 2/32 inch but verify state requirement. Measure at multiple points across tire width and around circumference. Inspect sidewalls for cuts, bulges, or exposed cords. Verify all lug nuts are present and tight to specification using torque wrench. Check tire pressure against door jamb specification (typically 35-40 psi front and rear for this vehicle). Look for uneven wear patterns indicating alignment or suspension issues.
7. 7

   Raise Vehicle for Undercarriage Inspection
   Raise vehicle on lift or using floor jack and safety stands. If using jack stands, place under frame rails behind front wheels and ahead of rear axle. Ensure vehicle is stable before working underneath. Remove all four wheels if detailed brake inspection is required by state regulations, otherwise perform visual inspection through wheel openings.
8. 8

   Inspect Exhaust System
   Visually inspect entire exhaust system from exhaust manifolds to tailpipe. Check for rust holes, cracks, or loose connections that could allow exhaust leaks. Verify all hangers are intact and properly supporting system. Check catalytic converters for physical damage or signs of overheating. Inspect heat shields for security and damage. Any exhaust leak ahead of or at catalytic converter typically results in inspection failure. With engine running, check tailpipe emissions - excessive smoke (black, blue, or white) may indicate engine problems.
9. 9

   Inspect Brake Components
   Inspect brake rotors for minimum thickness, scoring, or heat cracking. Check brake pads for remaining thickness - minimum is typically 2mm above backing plate. Inspect brake hoses for cracks, bulging, or fluid seepage. Check brake calipers for leaks and proper mounting. Verify brake lines are secure with no corrosion or damage. Inspect parking brake cables for fraying or binding. Check rear brake components (drums or rotors depending on configuration) following same criteria.
10. 10

    Inspect Steering and Suspension Components
    Check all ball joints for excessive play by prying between control arm and steering knuckle - movement indicates wear. Inspect tie rod ends for looseness or torn boots. Check idler arm and pitman arm for wear (if equipped). Verify rack and pinion boots are intact without tears. Inspect control arm bushings for deterioration or separation. Check sway bar links and bushings for wear. Examine shock absorbers for leakage or damage - any oil seepage indicates failure. Verify all mounting bolts are tight and not missing.
11. 11

    Inspect Frame and Body Components
    Examine frame rails for rust, cracks, or damage that could compromise structural integrity. Check for evidence of collision damage or improper repairs. Verify body mounts are intact and secure. Inspect fuel tank for damage, secure mounting, and check filler neck and cap for proper seal. Check fuel lines for leaks, chafing, or corrosion. Verify drive shaft U-joints are secure without excessive play (rotate driveshaft by hand checking for clunking or binding). Inspect differential for leaks at pinion seal and cover gasket.
12. 12

    Check Safety Equipment and Interior
    Verify all factory-installed seatbelts operate correctly - belts should retract smoothly and latches should engage positively. Check for fraying or cuts in belt webbing. Test driver and passenger airbag warning light - should illuminate with ignition on and extinguish after engine start. Verify all required safety decals are present and legible. Check rearview mirrors (interior and both exterior) for secure mounting and adequate reflection. Verify door latches engage properly and doors seal correctly.
13. 13

    Lower Vehicle and Perform Final Checks
    If wheels were removed, reinstall and torque lug nuts in star pattern to specification. Lower vehicle to ground. Start engine and verify all dashboard warning lights extinguish (Check Engine, ABS, Airbag, Brake). Test drive vehicle briefly checking for pulling, vibration, or brake pulsation. Verify transmission shifts smoothly through all gears. Return to inspection station and complete required paperwork.

Reassembly

1. Ensure all wheels are properly torqued in star pattern if removed during inspection
2. Verify no tools or equipment left in or under vehicle
3. Reset trip odometer or record mileage per state inspection requirements

Verification

• All OBD-II readiness monitors show 'ready' status with no active diagnostic trouble codes
• All exterior lights, horn, and windshield wipers function properly
• Brake pedal remains firm under pressure with no warning lights illuminated
• All tires meet minimum tread depth requirements with proper inflation
• No exhaust leaks detected and emissions appear normal
• Steering and suspension components show no excessive wear or damage
• All safety equipment including seatbelts and airbag systems function correctly
• Vehicle test drives without pulling, unusual noises, or safety concerns

Related trouble codes on this vehicle

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