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HOMESERVICE MANUALSCHEVROLET2002SILVERADO 1500 HD, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURESNO-START DIAGNOSISNO-START - ENGINE CRANKS OKAY (2.2L SONOMA & S10 PICKUP)DIAGNOSTIC PROCEDURE
2002 Chevrolet Silverado 1500 HD, RWD

Diagnostic Procedure

2002 Chevrolet Silverado 1500 HD, RWDSECTION Diagnostic Procedure
  1. Perform OBD system check. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - 2.2L SONOMA & S10 PICKUP article. After performing OBD system check, go to next step.
  2. Using scan tool, check for DTCs. If DTCs P0336, P0601, P0602, P1621, P1626, P1631, or P1632 are set, diagnose DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 2.2L SONOMA & S10 PICKUP article. If DTCs are not set, go to next step.
  3. Using scan tool, monitor CKP activity counter while cranking engine. If counter increments, go to next step. If counter does not increment, diagnose ignition system. See ELECTRONIC IGNITION SYSTEM DIAGNOSIS in SYSTEM & COMPONENT TESTING - TRUCKS article.
    4. NOTE: Before continuing with this test, ensure the fuses that are listed below are not open.
  4. Turn ignition ON with engine OFF. Probe both sides of the following fuses: ECM B, ECM 1, CLSTR Fuse 11, TBC. Does the test light illuminate on both sides of all the fuses listed? If yes, go to next step. If no, diagnose fused circuit(s). See TESTING FOR SHORT TO GROUND in SYSTEM & COMPONENT TESTING - TRUCKS article.
  5. Using scan tool, command fuel pump on. If fuel pump runs, go to next step. If fuel pump does not run, diagnose fuel pump circuit. See FUEL PUMP ELECTRICAL CIRCUIT DIAGNOSIS in SYSTEM & COMPONENT TESTING - TRUCKS article.
  6. Turn ignition OFF. Connect fuel pressure gauge. See BASIC FUEL SYSTEM CHECKS (GASOLINE) . Using scan tool, command fuel pump on. If fuel pressure is 41-47 psi (248-325 kPa), go to next step. If fuel pressure is not as specified, diagnose fuel system. See BASIC FUEL SYSTEM CHECKS (GASOLINE) .
  7. Connect Spark Tester (J-26792) to No. 1 spark plug wire. Leave other wires connected. Crank engine and check for spark. Repeat for each cylinder. If spark was present at all cylinders, go to next step. If spark was not present at all cylinders, diagnose ignition system. See ELECTRONIC IGNITION SYSTEM DIAGNOSIS in SYSTEM & COMPONENT TESTING - TRUCKS article.
  8. Turn ignition OFF. Disconnect an injector connector. Install the Injector Test Lamp (J 34730-405) to the injector connector. Attempt to start the engine. Does the test light flash while the engine is cranking? If yes, go next step. If no, diagnose injector circuit. See FUEL INJECTOR CIRCUIT DIAGNOSIS in SYSTEM & COMPONENT TESTING - TRUCKS article.
  9. Inspect for the following conditions;
    • A collapsed air intake duct or restricted air filter element.
    • Spark plugs that are gas fouled or coolant fouled. If the spark plugs are fouled, determine what caused the condition.
    • Engine mechanical conditions, e.g. worn timing chain and gears, low compression, etc.
    • Restricted exhaust system.
    • The engine coolant temperature (ECT) sensor is NOT close to the actual engine temperature. See DTC P0117: ECT SENSOR CIRCUIT - LOW VOLTAGE or DTC P0118: ECT SENSOR CIRCUIT - HIGH VOLTAGE under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 2.2L SONOMA & S10 PICKUP article.
    • Compare the Manifold Absolute Pressure (MAP) sensor and throttle position (TP) sensor parameters to another vehicle. The parameters should be close in value. See DTC P0105: MAP/TP SENSOR CIRCUIT - INSUFFICIENT ACTIVITY under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 2.2L SONOMA & S10 PICKUP article.

    Did you find and correct the condition? If yes, go to next step. If no, go to DIAGNOSTIC AIDS .

  10. With a scan tool, clear any DTCs that are set. Attempt to start the engine. Does the engine start and continue to operate? If yes, go to next step. If engine does not start, go to step  2.
  11. Idle the engine. Allow the engine to reach operating temperature. With a scan tool, observe the DTC information. Are any DTCs displayed? If yes, diagnose DTC. See SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - 2.2L SONOMA & S10 PICKUP article. If no, go to next step.
  12. With a scan tool, review the stored information, Capture Info. Does the scan tool display any DTCs that you have not diagnosed? If yes, diagnose DTC. See SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - 2.2L SONOMA & S10 PICKUP article. If no, system is OK.
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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.