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instrument cluster 2004 envoy battery drain

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2004 Chevrolet TrailBlazer Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Repair Manual

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This bulletin is being revised to add model years and provide important repair information. Please discard Corporate Bulletin Number 04-08-49-015 (Section 08 — Body and Accessories). Condition Some customers may comment on a noise coming from the instrument panel cluster (IPC) while driving or on initial start-up. Instrument clusters may contain stepper motor gages that can make noise during the following conditions: Subject: Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Models: 2003-2005 Buick LeSabre 2003-2007 Buick Rendezvous 2004-2005 Buick Rainier 2003-2006 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2005 Chevrolet Cavalier, Impala, Monte Carlo 2003-2006 Chevrolet Avalanche, Suburban, Tahoe, TrailBlazer EXT 2003-2007 Chevrolet Silverado Classic, TrailBlazer 2003-2007 Chevrolet Kodiak Models 2004-2006 Chevrolet SSR 2003-2006 GMC Envoy XL, Yukon, Yukon XL 2004-2005 GMC Envoy XUV 2004-2007 GMC Envoy 2003-2007 GMC Sierra Classic 2003-2004 Oldsmobile Bravada 2003-2005 Pontiac Aztek, Bonneville, Sunfire 2003-2005 HUMMER H2 Attention: Appropriate repair is based on vehicle build date. Use GMVIS to determine the vehicle build date. • Initial startup (gages zero/reset)

Diagnostic Information for Intermittent Vehicle No Crank/ Dead Battery

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Diagnostic Information for Intermittent Vehicle No Crank/Dead Battery – (Feb 5, 2004) When diagnosing a concern regarding an intermittent vehicle no crank or dead battery, technicians should remove and reinstall the ignition switch using the Ignition Switch Replacement procedure in the Steering Wheel and Column section of SI. The ignition switch may have been misindexed in the steering column during a previous replacement . If the ignition switch is misindexed in one direction, the ignition switch circuits will not be completely open when the ignition switch is in the OFF position with the key removed. This may result in lights remaining on or instrument panel lights illuminating, which will drain the battery. If the ignition switch is misindexed in the opposite direction, the ignition circuits will open correctly but the ignition switch may not close the crank circuit properly when the ignition key is turned to the crank position. This will result in a no crank concern.

Special Coverage Adjustment – Instrument Panel Cluster Gauge Needle Function

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2003-2004 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT 2005 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT (U.S. ONLY) 2003-2004 CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE 2005 CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE (U.S.ONLY) 2003-2004 GMC SIERRA, YUKON, YUKON XL 2005 GMC SIERRA, YUKON, YUKON XL (U.S. ONLY) . Install the IPC. Ensure everything is connected properly. The replacement IPC requires SPS Programming and IPC Setup procedures to be performed. It does not matter which procedure is performed first. 2. Start the engine and then select IPC Setup. You must have the engine running before performing the IPC Setup. 3. Select IPC Setup. With the engine running, enter the appropriate mileage and engine hours. 4. Select “OK”. Review the pop up asking you to verify the mileage and engine hours. Move the pop up out of the way if necessary to view the verification screen. This may require a click and drag of the dialog box. 5. Verify that the mileage and engine hours are correct and select “OK”. DO NOT turn the ignition OFF until the engine has “run” for approximately seven (7) minutes. Allowing the engine to idle for this period of time allows the IPC to accumulate 1/10th of an hour and write the correct engine hour value to the permanent memory. The engine must be running before set up is performed and run for approximately seven minutes after the user selects “OK” confirming their mileage/engine hour inputs. After approximately seven minutes, shut the engine OFF and complete the event. The seven minute clock starts after you select “OK”, confirming the entries. Note: Based on feedback from technicians, we are currently making changes to the “IPC Setup” application which will include several enhancements to the set up screens. These are scheduled to be released and available in TIS2WEB very soon. Important: Only IPC conditions listed in the Condition section of the bulletin are covered under this special coverage program. In a small number of vehicles, the condition may be intermittent and the gauge sweep test may not always verify the condition. IPC Performance IPC performance may be affected by the following conditions: Customer Comments and Observations Customers who describe gauge performance as jumpy, sticky, slow or erratic. Gauge performance may also be described as being inoperative or inaccurate. For example, for a period of time the speedometer may appear to move normally but be inaccurate and not return to zero (0) after the vehicle comes to a stop. This inaccurate condition may be more or less pronounced during the drive cycle and may, for a time, return to normal operation. A Tech 2 sweep test may not reveal the condition. 1. Perform a gauge sweep test to determine/verify that an IPC gauge is sticking, stuck, or inoperative. Using the Tech 2, navigate to the following screens to perform the gauge sweep test: Body -> Instrument Panel Cluster -> Special Functions -> IPC Gauges -> Display(s) Test. • Cold temperatures • Temperature fluctuations • High humidity • Driving over rough surfaces such as dirt roads or potholes

Battery Electrical Drain/ Parasitic Load Test Repair Manual

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1. Disconnect the battery negative cable 2. Install the male end of the J 38758 to the negative battery terminal. 3. Turn OFF the test switch. 4. Install the negative battery cable to the female end of the test switch. 5. Install the Scan Tool (or equivalent) or wait for 20 minutes. 6. Turn ON the test switch. 7. Road test the vehicle while activating all accessories, including the radio and the air conditioning. 8. Lower the door glass, then exit the vehicle. Do not move the door handle after closing the door. 9. Open the hood. Important The power down timer will reset to 20 minutes if any wake up inputs are received by a Class 2 device (after the scan tool has put all Class 2 devices to sleep). 10. Put all of the Class 2 devices into the sleep mode. 11. Turn OFF the ignition switch. Remove the key. Important From this point on, electrical continuity must be maintained in the ground circuit of the battery through the Test Switch J 38758 in the ON position or through the ammeter J 39200 . 12. Components such as PCM, VCM, Automatic Air Conditioning, and the Truck Body Control Module have timers that draw several amps of current while they cycle down. This can give a false parasitic drain reading. Wait 20 minutes for these components to power down before continuing this test (or use the scan tool to put all Class 2 devices to sleep). 13. Connect a jumper wire with a 10 A fuse J 36169-A to the terminals of the test switch. 14. Turn the test switch to the OFF position. 15. Wait ten seconds. If the fuse does not blow, the current is less than 10 A. The ammeter can be used safely. 16. Before the fused jumper wire is removed, turn the test switch to the ON position. Important If an ammeter other than the J 39200 is used, ensure that the vehicle does not have a high current drain that would damage the ammeter when connected to the circuit. 17. Perform the following procedure in order to detect a high current drain: A. Set the ammeter J 39200 to the 10 A scale. B. Connect the ammeter to the test switch terminals. C. Turn OFF the test switch. This allows the current to flow through the ammeter. D. Wait one minute, then inspect the current reading. Ñ When there is a current reading of 2 A or less, turn ON the test switch, this maintains continuity in the electrical system. Ñ Then, switch the meter down to the 2 A scale, for a more accurate reading, when the test switch is reopened. E. Open the test switch. F. Take the reading in milliamps. G. Note the battery reserve capacity. Refer to Battery Usage . Ñ Divide this number by 4. Example: 90/4 = 22.5 Ñ Compare this to the ammeter reading. Ñ The current drain in milliamps should not exceed this number. Ñ Example: if a battery has a reserve capacity of 90 minutes, the current drain should not exceed 22 milliamps. H. When the current draw is too high, remove the electrical system fuses one at a time until the draw returns to a value less than or equal to specifications. Ñ Start with the fuses that are hot all the time. Ñ To remove the fuse, you must first open the door, which causes a high enough current flow to damage the ammeter. Ñ Protect the ammeter, without disturbing the electrical continuity, by turning ON the test tool before opening the door. Ñ Remove the courtesy lamp fuse. Ñ Note the ammeter reading. Ñ If the parasitic load is still excessive, start removing the remaining fuses one at a time. Ñ Keep the courtesy lamp fuse out during diagnosis, so the door can remain open. Ñ Perform Steps 11 through 13 each time a fuse is removed. I. Removing the PCM or VCM fuse should cause a drop of less than 10 milliamps. A drop greater than 10 milliamps indicates a possible short to ground. J. Check the orange wires along with the components connected to the orange wires. No drop in the milliampere reading indicates the PCM or VCM is not drawing current. K. Repeat the parasitic current drain test procedure after any repair has been completed. L. When the cause of the excessive current draw has been located and repaired, remove the ammeter and the parasitic draw test switch.

2000 Chevy Truck S10/T10 Instrument Panel (I/P) – Carrier Replacement

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REMOVAL PROCEDURE 1. On vehicles equipped with a manual transmission, remove the shift lever. 2. On vehicles equipped with an automatic transmission, perform the following steps: CAUTION: Refer to Battery Disconnect Caution in Service Precautions. 3. Disconnect the battery negative cable. CAUTION: Refer to SIR Handling Caution in Service Precautions. 4. Disable the passenger side SIR system. 5. Remove the left sound insulator. 6. Remove the right instrument panel sound insulator. 7. If the vehicle is equipped with a multiple CD changer located in the center console, remove the center console. 8. Remove the center sound insulator. 9. Remove the lower left instrument panel mounting bolt. 10. Remove and retain the instrument panel storage compartment. 11. Remove the lower right instrument panel mounting bolt. 12. Remove and retain the left and right speakers and the speaker grilles. 13. Use a flat-bladed tool to remove the windshield defroster grille. Retain the windshield defroster grille for use on the replacement IP carrier. 14. If the vehicle is equipped with a sunload sensor, twist the sunload sensor 1/4 turn counterclockwise in order to detach it from the windshield defroster grille. Retain the sunload sensor for use on the replacement IP carrier. IMPORTANT: Always disconnect the brown electrical from the BCM before disconnecting the purple electrical connector from the BCM. 15. Disconnect the brown electrical connector from the Body Control Module ( BCM ) . 16. Disconnect the purple electrical connector from the Body Control Module (BCM) . 17. Remove the knee bolster. 18. Remove and retain the instrument panel cluster. 19. Remove and retain the radio. 20. Remove and retain the HVAC control assembly 21. Remove the left and right instrument panel driver knee bolster brackets. 22. Lower the steering column for clearance. Refer to the appropriate procedure: * Steering Column Replacement in Steering Wheel and Column – Standard * Steering Column Replacement in Steering Wheel and Column – Tilt IMPORTANT: Label all of the connections in order to avoid improper installation