20 Most Recent 2003 Chevrolet TrailBlazer - Page 8 Questions & Answers

A bad alternator no longer charges the battery, the battery will die once it is drained. This will occur more rapidly when using equipment that runs off of the battery( lights, heater blower, windshield wipers etc.) even electronic ignition will run down a battery. Your battery just went over night the alternator may have stopped working long before. Go to an auto parts store that offers free testing to make sure it is your alternator before making repairs. Good luck.

May have a bad shift sensor transmission check YouTube .

P0172 states that the "bank 1" side of the engine is running too rich. Here is a link explaining it in more detail and giving possible causes and solutions. http://www.obd-codes.com/p0172

C0237 is related to the rear speed sensor and C0267 is related to the pump motor in the ABS system.

Check fuses for blown fuse or bad relat.

Two things come to mind, after each refilling of coolant did you "burp" the system to make sure there was no air trapped? And second, you may want to have the coolant checked for exhaust gases in case there is a headgasket leak into the coolant.

my 2002 basically did the same thing and I had to replace the tranny on it. Cost was about 3000.00 I was told that it was a common problem at 160,000 miles or more. Sorry for the bad news

OTHER THAN HAVING A DEALERSHIP LOOK AT IT I WOULD START OFF PURCHING A SERVICE MANUAL FOR THE CAR. THEN A DEVICE TO READ THE CODES OFF OF THE COMPUTER.

the gear shifter may not be fully in park also sometimes if the steering wheel is jaming try to move steering wheel and check vehicle is fully in park is key stuck in the on position or can you turn off car or you just cant remove key

Did u try the sensor its 20 $

bad conection at batery or starter

You can check the fuel pressure regulator ,

1. Inspect for a fuel leak from the fuel pressure regulator vacuum port.

Is the fuel pressure regulator leaking fuel ? This next test needs a scan tool with data reading capability's ,not a code reader ! Are you familiar with OBD 2 ? All the sensors , coolant , O2S , TPS , MAF , Intake air temp. etc. Sensor/System Monitor the engine coolant temperature (ECT) sensor with the scan tool. Compare the engine coolant temperature with the ambient air temperature on a cold engine. If the coolant temperature reading is more than 5 degrees more or less than the ambient air temperature on a cold engine, check for high resistance in the coolant sensor circuit. ?€¢ Inspect the PCM grounds for being clean, tight, and in their proper location. Refer to Power and Grounding Component Views in Wiring Systems.

?€¢ Inspect vacuum hoses for splits, kinks, and proper connections, as shown on Vehicle Emission Control Information label. Inspect thoroughly for any type of leak or restriction.

?€¢ Inspect the air intake ducts for being collapsed, damaged areas, looseness, improper installation, or leaking, especially between the mass air flow (MAF) sensor and the throttle body.

?€¢ Inspect for air leaks at throttle body mounting area, mass air flow (MAF) sensor and intake manifold sealing surfaces.

?€¢ Inspect the wiring harness for poor connections, pinches, cuts, or other damage.

?€¢ Inspect for loose, damaged, or missing sensors and/or components.

Really need to check sensor PID'S with a scan tool, An maybe a scope too ! PID'S are parameter identification . All the sensors operate within a set voltage parameter , like the coolant temp. sensor an if it's off it can affect fuel delivery ! This

Under the distributor cap at the rear of the distributor by firewall. 2 screws.

P0440 = evaporative emissions system leak...check gas cap , hoses P0151 = evaporative emissions systems sensors (O2 sensor, usually the O2 sensor between engine and catalytic converter on Cylinder Bank 2 (the side of the engine with the even-numbered cyclinders, usually left side from under hood if engine is mounted axially, rear of engine if it is mounted transversely) P1481 = cooling fan speed

Could be the door faulty switch. When the door opens it completes the electrical circuit. Easy to change. Any parts house should have it. And of course check the bulb.

Disconnect batt for 20 to 30 min.

Common problem you can send it to be repaired or get gauges and resolider in your self if you have the skills its on youtube video.we do repair s for this problem. the lamps should be re placed at same time but don't have if price is issue .

have the struts re-gassed or get new ones.