20 Most Recent 2003 Chevrolet Impala Questions & Answers


after pulling my hair out for 2 years and sinking a lot of money on unessasary parts, (trying to get my check engine light off and stay off). I removed the throttle body from the manifold, and wha...lah... I immediately seen the problem< and new the light would go off and stay off,and my visit to the echeck would be the last.(for two yrs. anyways). behind the throttle body there is an exhaust port which leads to the egr valve. to me its a poor engineering design, because it is like a trap on your kitchen sink, its about a 70 degree pipelike angle which trapped carbon deposits and builds up over time. causing little or no air flow to the egr valve. it is a pain to clean it but a man gotta do what a man gotta do. keep unplugging it. also take off the egr valve and clean the rest of the port from there. I kept up until I could easily blow and feel air coming through. this whole process start to finished , took about 3 hrs. you may have to get creative in your cleaning< I nused a coat hanger< bent an end of a small screwdriver<for digging,used brake clean,carb cleaner, and air. what a relief ... its finally over.. good luck

2003 Chevrolet... • Answered on Aug 16, 2020



Hello
u will find a lot of wiring diagrams and circuit diagrams help books and stuff like this at reliable-store
the girl in the chat box can help u instantly... im a frequent buyer there since Im a mechanic so take help from there

2003 Chevrolet... • Answered on Nov 18, 2019


The obvious problem is it is not the correct one. Carefully compare the old one with the new one - if not the same, take the old one back to where you purchased the new one and get the correct one.

2003 Chevrolet... • Answered on Nov 03, 2019


gee not codes to read leaves you with ECU or a module fault fuel pump or fuel pump relay bad fuel while hot.. coils packs or crank angle sensor might be worth testing

2003 Chevrolet... • Answered on Oct 04, 2019


Left side of engine near starter.

2003 Chevrolet... • Answered on Oct 03, 2019


Hello Anonymous, Please find your information here: http://bbbind.com/free_tsb.html Fill in the details about your vehicle to locate the correct schematic for your entertainment (Audio system) 11752936-k2yvcyjwveyxs0psxzc0l3es-3-3.jpg http://bbbind.com/free_tsb.html

2003 Chevrolet... • Answered on Jun 03, 2019


Before replacing parts there is a specific way to start diagnostics an a professional grade scan tool is a must ! a code reader can not access the body control module , or the EBCM - electronic brake control module or instrument cluster ! All these modules communicate on the class 2 serial data bus. Begin the system diagnosis with Diagnostic System Check - ABS . The Diagnostic System Check will provide the following information: ?€¢ The identification of the control modules which command the system

?€¢ The ability of the control modules to communicate through the serial data circuit

?€¢ The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located. The traction control switch is a input to the body control module, with a scan tool hooked up an looking at BCM data ,check for conformation the traction control switch is turning on an off ! SERVICE TRACTION SYSTEM The IPC illuminates the SERVICE TRACTION SYSTEM indicator in the message center when the electronic brake control module (EBCM) detects a malfunction in the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination. The SERVICE TRACTION SYSTEM indicator illuminates for 60 seconds when the condition is present. The IPC sends a class 2 message to the radio in order to activate an audible warning. TRAC OFF The IPC illuminates the TRAC OFF indicator when the following occurs: ?€¢ The electronic brake control module (EBCM) inhibits the traction control system due to a malfunction in the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination.

?€¢ The body control module (BCM) detects that the traction control switch has been pressed (signal circuit is low). The BCM sends a class 2 message to the EBCM in order to disable traction control. The IPC receives a class 2 message from the EBCM requesting illumination. The BCM sends a class 2 message to the radio in order to activate an audible warning.

2003 Chevrolet... • Answered on Apr 28, 2019


The "check engine" light tells you that the ECM (computer) senses a fault in one of your cars systems. You need to find out what the OBD (onboard diagnostic) code is to determine the problem. The auto parts store will scan for the code, but most will not reset the computer. You can do that yourself by disconnecting the battery for a half hour or so after the repair has been done. If the fault isn't repaired the code will reset and the light will come back on.

2003 Chevrolet... • Answered on Apr 24, 2019


sounds like your not getting any power from battery at all, who ever replaced the starter didn't connect your cable from battery correctly. one hot cable runs from battery to starter , you can start there, check battery and fuse, in not a mechanic, but I've changed a few starters on Chevy truck, hope this helps, good luck!

2003 Chevrolet... • Answered on Apr 23, 2019


sorry but impala ball joints are not pressed in they are secured by rivets

2003 Chevrolet... • Answered on Apr 16, 2019


Looking at a wiring diagram it look's like it's a possiblity . Free wiring diagrams here http://www.bbbind.com/free-tsb Test the electrical circuit's using a DVOM - digital volt meter .

2003 Chevrolet... • Answered on May 31, 2018


GM vehicles from 2003 to 2006 had instrument cluster problems were gauges showed wrong data , indicating overheating , wrong speed or no speed , low or no oil pressure etc.... Taking to a qualified repair shop that has a professional scanner that can view coolant temp. data to the PCM an from the PCM to the instrument cluster , rather buying parts the vehicle doesn't need . An trying to guess the problem instead of diagnose the problem . Your vehicle may not even be overheating ,if your just going by the temp gauge.

2003 Chevrolet... • Answered on May 27, 2018

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