20 Most Recent 2005 Chevrolet TrailBlazer - Page 2 Questions & Answers

This sounds like a failing fuel pump. If the power is on and you loose pressure the pump is bleeding by. Replace with an AC Delco pump only this has been an on going issue with after market brands.

You can order through your Chevrolet dealer.

hi, sounds like you may have a crack in one of the lines,or the front of the pump has a seal that could be leaking, depending on the style of the pump it could be the seal on the tank side leaking on the pump.

Ur evap system in tank area has issue...probly the solenoid. Get a smoke test done and a scan

The 4.2 engine is an inline engine. The #4 cylinder is the 4th cylinder from the front. The firing order is 1-5-3-6-2-4

The OnStar module is located under the right rear passenger seat, unhook the connector. Also, fuse #27 in the rear fuse panel is for the OnStar, but the DVD player as well.

near the front of intake on the drivers side. its right beside the intake has 2 hose connections and an electrical connector

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in relation to the cruise control ????? There is no vacuum used for cruise control on your vehicle . Your vehicle has a computer controlled electronic throttle system .The powertrain control module (PCM) monitors the signal circuits of the cruise control switches in order to determine when to capture and maintain the selected vehicle speed. The PCM uses the throttle actuator control (TAC) module motor in order to control the vehicle speed. For further information on the TAC system, refer to Throttle Actuator Control (TAC) System Description . Your best bet , take it to a qualified repair shop. Need a factory or some other professional type scanner to check for codes an data input from the switches to the PCM

There isn't a seperate IAC on our I6 engine. It's all done through the throttle body. Having idle problems?

possible known problem the material around the shiftier can get into the selector and block or damage shiftier from going into park or selector cable is corroded or damaged

I believe it has an adjustment screw at the regulator....other wise try adjusting at the throttle butterfly....BTW LPG does not produce the energy that Gasoline does.....Performance is going to be very sluggish...

First check wheel bearing. Jack front end up lifting tires off ground and see if the wheel moves by pulling on the sidewall part of wheel from top and pushing bottom towards the car does this back and forth if there is play, wheel bearing could need replaced. Take tire off and check for loose brakes, loose calipers, loose dust shields , etc. everything except rotor should be tight.

This could be caused by a few different thing's , a dirty throttle plate an bore , vacuum leaks , sensor problems etc... Having a scanner hooked up by a professional technician that knows what scan data to look at should be done . Your vehicle also has electronic throttle control or drive by wire technology . Google that . 007 Idle Speed Problems Scan Data for Idle

annoying i know ,look in the fuse board under the dash .

So my 2005 trailblazer horn just went off on its ??? Own ??? I seen smoke coming from the back seating area. Fuse box under left rear seat . Thing's not working ????? View wiring diagrams for componets that are not working an test the electrical circuit's using a DVOM - digital volt ohmmeter . Electric Testing Techniques You Need to Know Free wiring diagrams here http://www.bbbind.com/free-tsb

Could be the stepper motor in the instrument cluster . GM instrument cluster had bad stepper motors . 2003 to 2006 How to repair GM Instrument Cluster Speedometer Gauge Stepper Every light lit on the instrument cluster , could be data network problem . Do you know what a serial data network is , class 2 or GMLAN ? Hooking up a professional or factory scan tool to view sensor data to ECM - engine computer . Fuel Gage The instrument panel cluster (IPC) displays the fuel level as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the fuel level percent. The fuel gage defaults to empty if: • The ECM detects a malfunction in the fuel level sensor circuit. • The IPC detects a loss of serial data communications with the ECM. When the fuel level is less than a pre-determined value, the IPC illuminates the low fuel indicator.

Make sure all shifting linkage is properly hooked up. how are you checking the fluid. it should be done while hot running and in neutral . Make sue all lines are connected. a dirty trannie filter will do this also. You could have possible got a bad transmission iy happens all the time.

Could be ignition switch problem or a stuck closed relay . Gm has had ignition switch problems . Your best bet , if you don't know how to test automotive electrical systems , mite be to take it to a qualified repair shop. With the electronic's on your vehicle ,really ,it could anything .The BCM - body control module controls most of the vehicle . On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the body control module (BCM). The BCM uses 3 signals from the ignition switch. These are the Ignition 0, Ignition 1, and Accessory. To determine the correct power mode the BCM uses: • The state of these signals • The sequence of switch closures received by the BCM • The status of the engine run flag Fail-safe Operation Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the body control module (BCM) fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode. Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they receive the engine status from the powertrain control module (PCM). If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is true, indicating that the engine is running, the modules fail-safe to Run. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is false, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle. Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.