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HOMESERVICE MANUALSGMC1995C3500 HD 6.5 F, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 85 (ENGINE CONTROLS - SYSTEM/COMPONENT TESTS - 3.3L GASOLINE)INTRODUCTION
1995 GMC C3500 HD 6.5 F, Automatic

Section 85 (Engine Controls - System/Component Tests - 3.3L Gasoline): Introduction

1995 GMC C3500 HD 6.5 F, AutomaticSECTION Introduction
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Testing procedures not covered in this article require a Chrysler Diagnostic Readout Box (DRB). See TESTS W/CODES - 3.3L GASOLINE article in the ENGINE PERFORMANCE section.

Before testing individual components or systems, perform procedures in BASIC TESTING - 3.3L GASOLINE article in the ENGINE PERFORMANCE section. Since many computer controlled and monitored components set a fault message if they malfunction, also perform procedures in TESTS W/CODES - 3.3L GASOLINE article in the ENGINE PERFORMANCE section.

NOTE: Testing of individual components does not isolate possible shorts or opens in wiring harness of electronically controlled systems. Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance unless otherwise instructed in procedure. Use an ohmmeter to isolate wiring harness shorts or opens.
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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.