SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 8 (ENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURES - 6.5L TURBO DIESEL)BASIC IGNITION SYSTEM CHECKSDISIGNITION COIL TEST
1998 Chevrolet Suburban K2500, 7.4 J, Part Time

Ignition Coil Test

1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Ignition Coil Test
WARNING: This page is about a different variant/trim than selected.
  1. Turn ignition off. Remove engine cover. Disconnect distributor lead and wiring from ignition coil.
  2. Place DVOM on high scale. Connect DVOM as shown in step 1 of illustration. See Fig 1-Fig 3 . If reading is not infinite, replace ignition coil.
  3. Place DVOM on low scale. Connect DVOM as shown in step 2 of illustration. See Fig 1-Fig 3 . If reading is not 0.1 ohm, replace ignition coil.
  4. Place DVOM on high scale. Connect DVOM as shown in step 3 of illustration. See Fig 1-Fig 3 . If reading is not 5000-25,000 ohms, replace ignition coil.
  5. Reconnect distributor lead and wiring to ignition coil. Install engine cover.
Fig 1: Testing Ignition Coil - Step 1
G98B01081Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.