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HOMESERVICE MANUALSCHEVROLET1995SPORTVAN G20, 6.5 PREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 11 (ENGINE CONTROLS - TESTS W/O CODES - GASOLINE)INTRODUCTION
1995 Chevrolet Sportvan G20, 6.5 P

Section 11 (Engine Controls - Tests W/O Codes - Gasoline): Introduction

1995 Chevrolet Sportvan G20, 6.5 PSECTION Introduction
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Rally Camper Special, 1994 GMC Rally, and 1994 GMC Forward Control. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: These models may use Electronic Control Modules (ECM), Powertrain Control Module (PCM) or Vehicle Control Module (VCM). PCM will be used in this article to describe all control modules.

Before diagnosing symptoms or intermittent faults, perform steps in BASIC TESTING - GASOLINE article and appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section below. Use this article to diagnose driveability problems if a hard fault code is not present or if vehicle is not equipped with a self-diagnostic system.

Symptom checks are intended to direct the technician to malfunctioning component(s) for further diagnosis. A symptom should lead to either specific component or system testing or an adjustment specification. Use intermittent test procedures to locate driveability problems which DO NOT occur when the vehicle is being tested.

NOTE: For specific testing procedures, see appropriate SYSTEM/COMPONENT TESTS - GASOLINE article. For specifications, see ADJUSTMENTS - GASOLINE or SPECIFICATIONS - GASOLINE article in the ENGINE PERFORMANCE section.
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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.