Chevrolet TrailBlazer - Answered Questions & Fixed Issues - Page 7

You can get guide from many sites.. i know few error codes/ fault codes, wiring diagrams, schematic diagrams, torque specs, engine info, switches functioning, assemble, disassembly, com plete refurbish, repair, installation every single thing is covered within seconds u can get the access and it's totally illustrative complete

Make sure that none of the fuses were shorted out during the replacement. Also make sure that all relays were plugged in on assembly.

Check out this video on the pugre valve location. https://www.youtube.com/watch?v=qwMn0-UEgLo

P1484 - Cooling Fan System Performance

06-06-2005, 10:51 PMHere's what the GM Manual says about this code:

The cooling fan relay sends a pulse width modulation (PWM) signal of 12-14 volts to the cooling fan clutch through the cooling fan clutch supply voltage circuit. The powertrain control module (PCM) uses this PWM signal in order to control the speed of the cooling fan clutch. The signal controls the position of the oil control valve inside the cooling fan clutch. If the cooling fan RPM is different than the PCM is expecting, DTC P1484 will set. The actual cooling fan RPM vs the desired cooling fan RPM is not always exactly the same. There can be up to an 800-RPM difference.

The engine is running.
The system voltage is greater than 8.5 volts.
The intake air temperature (IAT) is greater than -7°C (19°F).
DTCs P1481 and P1482 are not set.
The engine speed is less than 3200 RPM.
The engine speed is not changing more than 250 RPM for 5 seconds.
Fan command is greater than 0%.


The maximum allowable error of 1000 RPM in the cooling fan speed occurs for 100 seconds.
The PCM detects that the cooling fan clutch is locked up.


The Reduced Engine Power indicator illuminates only if the PCM detects that the cooling fan clutch is locked up.
The PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.
The PCM will store the conditions as Freeze Frame/Failure Records data.
The PCM commands the cooling fan clutch to 100%.

Important
Follow this procedure in order to clear DTC P1484 after completing a repair.



Use the Clear DTC Information function on the scan tool.
Perform an ignition key cycle.
The PCM turns OFF the MIL after the third consecutive trip that the diagnostic test has run and passed.

The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

An inline connector could cause an intermittent DTC. Ensure to test for poor connections and pin retention at all inline connectors. Refer to system schematics for connector and locations.
If the condition is not present, refer to Testing for Intermittent and Poor Connections in Wiring Systems.

Disconnect the harness connector of the cooling fan clutch from the shroud. Inspect the exposed wires between the harness connector and the tubing.
If DTCs P1484 and P0113 are set, and the weather conditions are cold, the cooling fan code may be false. Clear DTC P1484, and after an IAT sensor check, allow the DTC to reset .

I'd say that 'fan clutch is faulty' is your problem, based on the information you gave. Thank you for using Fixya and good luck

its under the hood look at fuse # 56 good luck

Should be located under the shift console or right in that vicinity. Hope this helps you in locating your BCM, Jesus loves you, John 3:16-17 (KJV)

The BCM is attached to the fuse block under the second row seat on the drivers side.

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How to remuve2005 trailblazer remove rear bumpier cover

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

You also may have turned the wheel and its now has to much stress to turn thw key. Try moving thw steering wheel while turning the key see if it will turn. If it turns hard one way good chance its locked and just turn it a little should get it to release

Check the serpentine belt.

Try an oil and filter change. If that don’t work you need a tranny specialist.

There's a large torx screws hold it on. Cake

About 15 foot pounds at most

does the hose connect close to the battery...it is for venting the battery.

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

Change Engine Oil Light = wrench with a car next to it
StabiliTrak® Service Light = car skidding in a triangle.
This light will come on if a problem is detected in the StabiliTrak® system

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