Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS SELF-DIAGNOSTICS - 2.2L & 2.4LSELF-DIAGNOSTIC SYSTEMPOWERTRAIN DIAGNOSTIC SYSTEM CHECK (GASOLINE)
2001 Chevrolet Cavalier LS, 2.4 T
Powertrain Diagnostic System Check (Gasoline)
2001 Chevrolet Cavalier LS, 2.4 TSECTION Powertrain Diagnostic System Check (Gasoline)
NOTE:
Check for applicable Technical Service Bulletins (TSBs) before proceeding. DO NOT perform the following procedure if driveability conditions are not present. DO NOT turn ignition off during the following procedure or clear DTCs unless instructed to do so.
- If vehicle does not crank, see appropriate STARTERS article in STARTING & CHARGING SYSTEMS. Ensure battery is fully charged and cables are clean and tight. Ensure PCM grounds are clean, tight, and in proper location. Install scan tool. If scan tool turns on, go to next step. If scan tool does not turn on, see SCAN TOOL DOES NOT POWER UP in appropriate BODY CONTROL MODULES article.
- Turn ignition on, engine off. Attempt to establish communication with Body Control Module (BCM), Electronic Brake Control Module (EBCM), Instrument Panel Cluster (IPC), PCM, Sensing and Diagnostic Module (SDM), and Vehicle Theft Deterrent (VTD) module. If scan tool communicates with all control modules, go to next step. If scan tool does not communicate with all control modules, see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article.
- Attempt to start engine. If engine starts and idles, go to next step. If engine does not start and idle, see appropriate BASIC DIAGNOSTIC PROCEDURES article.
- Select DTC display function for BCM, EBCM, IPC, PCM, SDM and VTD. If DTCs are present, record DTCs, which module set DTC and failure record for DTC. Go to next step. If DTCs are not present, go to step 7 .
- If scan tool displays DTCs which begin with "U", see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article. If scan tool does not display DTCs which begin with "U", go to next step.
- If scan tool displays DTC P0562, P0563, P0621 or P0622, see appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS. If scan tool does not display DTC P0562, P0563, P0621 or P0622, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS .
- If customer's concern is with the transmission, see appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS or MANUAL TRANSMISSIONS article. If customer's concern is not with the transmission, go to next step.
- If customer's concern is MIL inoperative, see MIL INOPERATIVE under SYSTEM TESTS. If customer's concern is MIL always on, see MIL ON STEADY (GASOLINE) under SYSTEM TESTS. If customer's concern is driveability, see appropriate TROUBLE SHOOTING - NO CODES article.
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.
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.