2002 Chevrolet TrailBlazer - Answered Questions & Fixed issues

I would begin by looking at the fuses. Check for one labeled ECM or PCM... Those are the computers that control engine management. There are also fuses for the coil packs and fuel injectors.

Hello. To fix this issue before you replace your throttle body. Open your fuse box and make sure the 3 shiny bolts are tight as they act as ground and come lose from vibration.. let me know if you need more help.

Question edited for clarity. Question moved to model category. It appears to be a software error that only the dealership or an auto electrician can fix! https://www.google.com/search?q=2002+trailblazer+radio+cal+error ..

You will have to pull the transmission fluid pan off and change the automatic transmission shift solenoids change both 1-2 and 2-3 shift solenoids you also need to change out the torque converter clutch solenoid. it is spring-loaded watch the shift valve when changing the tcc solenoid and pull your dipstick out before putting the pan back on makes it easier make sure to reset codes on the computer after you are done.

It would not be an acceptable thing to comment on this subject as there are people out there that read this public forum that may use any advice offered for a criminal intenstion. Ask your vehicle dealer.

Same thing happened to me on my 2002 trailblazer. The last few wraps of the cable was corroded to the point that it wouldn't unwind with the tool supplied. First thing to do is cut the crimped end of the cable off with a grinder or cut off wheel but don't forget to support the spare. This will get the spare out of your way then simply take out the 3 mounting bolts for the cable hoist. At this point you could buy a new cable hoist from the dealer and install it yourself or you might be able to do what I did. I managed to pull and remove about a foot of the rusted cable, slide the rectangular metal piece, that actually holds the spare at the center of the wheel, back on the cable and attach a 1/4" cable clamp to the end of the cable which of course must be in good condition. There should still be enough cable to re-attach your spare to it and hoist it back up. Don't forget to lube things up so it won't happen again. Good luck. (buying a new one sounds better, doesn't it?)
mikethemedic in Hawley,Pa.

On the Air tube intake halfway between air filter and intake!

dammed electronics ,bane of my life so your not the only one and in cases like this i can only suggest you bite the bullet and take vehicle to a main dealer .sorry i know this isnt the answer your looking for but from experiance certain things on modern motors you cannot do your self

Sounds like the engine is not firing on all cylinders. Check the spark polugs and cables.

You will either have to have a metal shop fabricate new mounts and have them grafted in, cut good ones out of a salvage truck and have them grafted in, or completely replace the frame with a good used one out of a salvage yard.

Mine was doing same thing. 03 trailblazer. Mine ended up being the 4 prong connector sensor gear was out of alignment. You have to take the entire latch out to remove the sensors. You can then rotate or realign the gear for the gate ajar switch. This was after realigning the gears.

I just had the same problem. I took the cover off, saw the white bulb base, twisted it to take it out, but it popped back inside the door. I got it out, but it wouldn't pull through, so I twisted it back in place and went to Autozone to get new bulb. Once I saw the new bulb, it was obvious, just the bulb itself pulls out. There's so little room to work, I couldn't get it with just my fingers - - maybe rubber gloves would have worked, but I used pliers, lightly, wiggled it a little and it popped right out. I had a similar issue once with the taillight bulb and had to break the bulb and then grip the remaining filament wires with pliers to get it out, so that was my backup plan, just in case.

Hope this helps others.

The switch is wear I would start.

beleive its 2.5 oz

very easy just go to reliable-store,com it has all manuals there many other websites also but in this matter this website is too good

You need a new airbag module.

On the 2002 Chevrolet Trailblazer with a 3.4L or a 4.3L the oil capacity is 4.5 quarts.

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

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

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)