CONFIRMED FIXES FOR CHEVROLET CARS
Item# confirmed-fixes-for-chevrolet-cars

Product Description

Description Potential Causes Confirmed Fix 1. Security and service lights staying on after the battery was replaced. Setting B2957 although the voltages are normal.... 2003 Chevrolet Cavalier 2.2L, GAS, Vin F, Eng Des L61 Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test voltage backprobed at the BCM powers and grounds. 2. Test terminal contact. 3. Replace BCM. Must Regular Production Option (RPO) configure/program....

1 Confirmed fix Body Control Module (BCM) Body Control Module (BCM) Grounds Body Control Module (BCM) Power Terminal Contact 1 - BCM, Body Control Module (BCM)

2. Intermittent no start, no crank.... 2003 Saturn Ion 2.2L, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check for Body Control Module (BCM) codes B2960 and or B3033. 2. If stored, replace the BCM and ignition switch per TSB #04-08-45-005C. 3. Perform a Passlock theft learn procedure as f...

7 Confirmed fixes Body Control Module (BCM) Ignition Switch 6 - Ignition Switch 1 - Pass Lock Relearn Procedure

3. No start. Will start on alternate fuel. The theft lamp is flashing.... 2003 Oldsmobile Alero 2.2L, Vin F, Eng Cfg L4, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test voltage values of the Passlock sensor at the Body Control Module (BCM). 2. Three wires at the Passlock sensor to test. 3. Test voltage from the Black wire to the White wire, backprobing...

5 Confirmed fixes Malfunctioning Body Control Module (BCM) Malfunctioning Passlock Sensor 3 - Body Control Module (BCM) 2 - Passlock Sensor

4. Start and then stall. Code P1599. Need pin out test for powers and grounds at Body Control Module (BCM). Shifter will not shift out of park, Service wrench light on. No BCM communications. Has Powert... 2003 Saturn L Series 2.2L, Vin F, Eng Cfg L4, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test voltage backprobed at the BCM powers and grounds. 2. Disconnect components on Class 2 serial data lines from BCM, test for BCM data. 3. Replace BCM....

5 Confirmed fixes Body Control Module (BCM) Body Control Module (BCM) Grounds Body Control Module (BCM) Power Terminal Contact 4 - Body Control Module (BCM) 1 - Fuel Pump

5. No start, no injector pulse. Has fuel pressure and spark. The theft lamp is flashing.... 2003 Pontiac Grand AM 2.2L, Vin F, Eng Cfg L4, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Has 1.4v from the Passlock sensor with each key rotation. 2. Check Body Control Module (BCM) and BCM connectors for water/corrosion. 3. If so, replace the BCM and repair source of water ...

4 Confirmed fixes Body Control Module (BCM) Passlock Sensor 3 - Passlock Sensor 1 - Battery, Passlock Sensor

6. Code B2958. Intermittently the car will not start.... 2003 Oldsmobile Alero 2.2L, Vin F, Eng Cfg L4, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test the voltage at the Pass-Lock sensor terminal A Yellow wire. Should maintain voltage when in the run position after cranking. Voltage must be repeatable each key cycle. 2. Test the ground ...

4 Confirmed fixes Body Control Module Ignition Switch Pass Lock Sensor Wiring Passlock Sensor 2 - Ignition Switch, Passlock Sensor 1 - Ignition Switch 1 - Passlock Sensor

7. The vehicle will not start after replacing the ignition switch assembly.... 2003 Saturn Ion 2.2L, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Perform a theft system relearn. 2. Turn ON the ignition, with the engine OFF. Attempt to start the engine, then release the key to ON. The vehicle will not start. 3. Observe the SECURITY ...

4 Confirmed fixes Theft System 2 - Relearn Procedure 1 - Theft Deterrent Relearn Procedure 1 - Theft System

8. Replaced the ignition switch and now the vehicle will not start because of the security system.... 2003 Saturn Ion 2.2L, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: Important: Do not remove the key from the ignition during this procedure. If the key is removed, the procedure will have to be performed from the beginning. 1. Turn ON the ignition, with the engi...

3 Confirmed fixes Security System 2 - Security System 1 - Theft Deterrent Relearn Procedure

9. Intermittent no start, no crank.... 2003 Saturn Ion 2.2L, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check for Body Control Module (BCM) codes B2960 and or B3033. 2. If stored, replace the BCM and ignition switch per TSB #04-08-45-005C. 3. Perform a Passlock theft learn procedure as f...

3 Confirmed fixes Body Control Module (BCM) Ignition Switch 3 - Ignition Switch

10. Start stall. Trouble code B2960. Battery is not going dead.... 2003 Oldsmobile Alero 2.2L, Vin F, Eng Cfg L4, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test voltage values of the Passlock sensor and compare the values to the voltages found when the car is a no start. 2. Three wires at the Passlock sensor to test. 3. Test voltage from the Bl...

3 Confirmed fixes Body Control Module (BCM) Connector Passlock Sensor 1 - Lock Cylinder, Passlock Sensor 1 - Passlock Learn Procedure 1 - Passlock Sensor



- Confirmed Fix - Exact Vehicle Match - Confirmed Fix - Similar Vehicle Match * - A vehicle with the same engine as the one you selected. Description Potential Causes Confirmed Fix 1. Misfire on cylinder 1 and 4.... 2004 Chevrolet Malibu 2.2L, Vin F, Eng Des L61 Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test for 30 Kv spark at the spark plug boots. 2. Check for stable trigger signal from the Powertrain Control Module (PCM) to the ignition module on the White wire and the Orange wire at the i...

6 Confirmed fixes Ignition Coil Ignition Module Powertrain Control Module (PCM) Wiring 5 - Ignition Control Module (ICM) 1 - Ignition Coils

2. Cylinders 2 and 3 are not firing. New coil - same.... 2004 Chevrolet Malibu 2.2L, Vin F, Eng Des L61 Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check the signal on the White (423) and Orange (406) at the Ignition Control Module for a 5v square wave coming from the Powertrain Control Module (PCM). A logic probe can be used when comparing...

2 Confirmed fixes Ignition Control (IC) Module Powertrain Control Module (PCM) Wiring Connection 1 - Ignition Coil Housing, Ignition Control (IC) Module 1 - Ignition Control (IC) Module

3. Intermittent misfires on #2 cylinder. When it is missing there is steady spark that will jump a spark tester at the #2 spark plug, and the hydrocarbons are not going up when it's misfiring. The injec... 2004 Chevrolet Malibu 2.2L, Vin F, Eng Des L61 Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Using a lab scope, check the injector pattern at the Powertrain Control Module (PCM) connector C2 pin 54 Light Green/Black wire when the engine is misfiring. 2. If the signal drops out and whe...

1 Confirmed fix Ground Injector Power Powertrain Control Module (PCM) Wiring 1 - Fuel Injector(s)

4. Engine cranks and will not fire.... 2004 Chevrolet Malibu 2.2L, Vin F, Eng Des L61 Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Test the power and ground supply to the ignition module by connecting a headlamp bulb between the Pink and Black wires. Test in run and crank. 2. Use a lab scope and check for 12-volt square w...

1 Confirmed fix Coil Pack Defective Ignition Module Wiring 1 - Coil Pack

5. No spark from the 2-3 coil pack.... 2004 Chevrolet Malibu 2.2L, Vin F, Eng Des L61 Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Use a lab scope and check for 12-volt square waves into the module on the solid White and the solid Orange wire. 2. If no signal is present, check the wires for an open or short back to the Po...

1 Confirmed fix Coil Pack Defective Ignition Module Wiring 1 - Ignition Module

6. Engine has a misfire.... 2004 Saturn Ion 2.2L, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Do a cylinder balance test to determine which cylinders are misfiring. 2. Once the cylinder is found check spark and fuel injector pulse to see if anything is missing. 3. Key on engine off d...

5 Confirmed fixes Dirty Fuel Injectors Injector Pulse Spark 5 - Fuel Injector(s)

7. Keeps setting over heat code P0117 and 5V reference code P0641 and it skips. When the skip happens, the temperature gauge will go to 305 and back instantly as it is skipping. It has a new coil pack,... 2004 Saturn Ion 2.2L, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check for a short to ground in the 5V reference circuits to the Manifold Absolute Pressure (MAP) sensor, Fuel Tank Pressure (FTP) sensor, Throttle Position Sensor (TPS) and A/C refrigerant pressur...

3 Confirmed fixes Circuit Electronic Control Module (ECM) Fuel Tank Pressure (FTP) Sensor Manifold Absolute Pressure (MAP) Sensor Refrigerant Pressure Sensor Throttle Position Sensor (TPS) 2 - Powertrain Control Module (PCM) 1 - Engine Control Module (ECM)

8. Misfire on #2 and #3 cylinders. No spark on those cylinders.... 2004 Chevrolet Classic 2.2L, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Connect a scope to the Orange Ignition Control (IC) circuit at the ignition module, pin G. 2. Engine running, verify that there is a 0-5v pulse on this wire. 3. If not, check the Orange wire...

3 Confirmed fixes Malfunctioning Ignition Coil Assembly Malfunctioning Ignition Module 3 - Ignition Coil Assembly, Ignition Module

9. Runs rough at idle. Trouble code P0300.... 2004 Chevrolet Cavalier 2.2L, GAS, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Disable the fuel injectors and fuel pump. 2. Run the engine on an alternate fuel source. 3. If the engine still runs poorly, test for 30 Kv spark output at each spark plug boot. 4. ...

3 Confirmed fixes Ignition Coil Ignition Module Jumped Timing Chain 1 - Ignition Coil, Ignition Module 1 - Ignition Module 1 - Timing Chain

10. No spark from the 1-4 coil pack.... 2004 Chevrolet Cavalier 2.2L, GAS, Vin F, Eng Des L61 * Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Use a lab scope and check for 12-volt square waves into the module on the solid White and the solid Orange wire. 2. If no signal is present, check the wires for an open or short back to the Po...

3 Confirmed fixes Coil Pack Defective Ignition Module Wiring 2 - Ignition Module 1 - Coil Pack, Ignition Module 2004 IMPALA Description Potential Causes Confirmed Fix 1. The ignition switch will not turn. Tilt column, column shift, and lock cylinder in the dash.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Try a different key. 2. Check for binding park/lock cable mechanism. It runs from the shifter to the ignition lock cylinder. 3. Check for a binding lock cylinder....

3 Confirmed fixes Key Lock Cylinder Lock Cylinder Housing Park Lock Cable 2 - Ignition Lock Cylinder 1 - Lock Cylinder Housing

2. Engine will not crank. Power door locks are inoperative. Scan tool will not communicate with the Body Control Module (BCM). Codes U1064, P1626.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Confirm scan tool can communicate with the Powertrain Control Module (PCM), Electronic Brake Control Module (EBCM), and Sensing Diagnostic Module (SDM). 2. Check the Light Green wire that goe...

2 Confirmed fixes Body Control Module (BCM) Electronic Brake Control Module (EBCM) Sensing Diagnostic Module (SDM) Wiring 1 - Battery Cables 1 - Sensing Diagnostic Module (SDM)

3. No start, no injector pulse. Has spark. Will run on alternate fuel. The Vehicle Theft Deterrent (VTD) status indicates that it's not in a fuel disable mode and the security lamp remains off. No P... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Disconnect the 24X Crankshaft Position (CKP) sensor, check that RPM for that sensor is now 0. 2. Check that the 24X reluctor is OK and the pulley is pressed on all of the way. 3. Disconnect ...

1 Confirmed fix Bent 24X Crankshaft Position (CKP) Sensor Reluctor Ignition Switch Powertrain Control Module (PCM) 1 - Powertrain Control Module (PCM)

4. Intermittent stall, sometimes with no restart. Intermittent no start. Has found no spark 1 time when the engine would not restart.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check and verify battery voltage is present at the "PCM/BCM/CLSTR" fuse has battery voltage during the no start. 2. If voltage is present check for voltage on the "DFI/MDL" fuse in the Under...

1 Confirmed fix Connector IGN Relay Ignition Switch 1 - IGN Relay

5. Engine will not crank at times. Codes B2958, B2960 are set.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check for loose Body Control Module (BCM) terminals at the following locations: Terminal B9 White wire, circuit 1459 in the Pink connector, Terminal B12 Black wire, circuit 1835 in the Pink co...

1 Confirmed fix Body Control Module (BCM) Ground Passlock Sensor Power Wiring 1 - Body Control Module (BCM)

6. No start, no crank unless the brake pedal is depressed.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Check ABS/PCM fuse for 12v with key in the CRANK position. 2. Check the CRANK RELAY for click as the key is moved to the CRANK position. 3. Check the PCM CRANK fuse for 12v with the key ...

1 Confirmed fix Battery Connector Ignition Switch 1 - Ignition Switch

7. No start after replacing the lock cylinder and passlock housing. Needs to test the new part.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Access the passlock sensor 3-wire White, Black and Yellow wires at the Body Control Module (BCM) located near the blower motor. 2. Turn the ignition on. Leaving the connector plugged in, check ...

1 Confirmed fix Body Control Module (BCM) Connector Passlock Cylinder Passlock Housing Wiring 1 - Passlock Learn Procedure

8. No start. Has spark, no injector pulse. Powertrain Control Module (PCM) data shows cranking RPM. 24X Crankshaft Position Sensor (CKP) shows normal pattern at the PCM. Throttle Position Sensor (TPS) ... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Verify the PCM data "VTD Fuel Disable" says "Inactive" or "No". If not, check for a problem with the Vehicle Theft Deterrent System (VTD). 2. Verify there is power to the injectors during cran...

1 Confirmed fix Connection Ground Damaged PCM Wiring Harness Power Powertrain Control Module (PCM) Vehicle Theft Deterrent (VTD) System Wiring 1 - PCM Wiring Harness

9. The engine stalls while driving and will not restart. Chime sounds, gauges drop to zero, Malfunction Indicator Lamp (MIL) comes on, A/C compressor disengages, lose communication with Powertrain Contr... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. During the failure, at the PCM test for 12 volts at all times on the Orange wire in terminal 20 in the Blue connector. 2. Test for 12 volts in run and crank on the Pink wire in terminal 24 in...

1 Confirmed fix Ground Supply Ignition Switch Power Supply Powertrain Control Module (PCM) 1 - Powertrain Control Module (PCM)

10. No start, no injector pulse. Has 55 PSI fuel pressure when cranking. Will start, stay running on alternate fuel. Will continue to run with the alternate fuel removed.... 2004 Chevrolet Impala 3.4L, Vin E Test Details... Confirmed Fix Details...

Tests/Procedures: 1. Disconnect the 7X Crankshaft Position (CKP) sensor at the side of the engine block, check for RPM from the 24X with the engine cranking. 2. Disconnect the 24X CKP sensor at the front of the e...

1 Confirmed fix 24X Crankshaft Position (CKP) Sensor Powertrain Control Module (PCM) 1 - Passlock Sensor

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