20 Most Recent 2004 Chevrolet TrailBlazer Questions & Answers

First thing to do is to clean the throttle body, this code is indicating a lean condition. The throttle body needs to be cleaned on the front and back sides, this means taking it off the engine. During the cleanng, the battery should be disconnected to reset the computer.

2004 Chevrolet... • Answered on Jan 29, 2021

Sounds like a fuse. Are you getting power to the driver door module (control cluster as you say). Below are 3 pictures for you. The first one is the location where the fuse box is located for that fuse (under drivers seat in the rear). The second picture is a diagram or the latout of the fuses. The fuse you want to check is the fuse marked "LT DOORS" or the one marked 02. It should be a 25 amp fuse. The 3rd picture is a wiring diagram for the circuit. If the fuse isn't blown check the power wire from the fuse box to the driver door control module. Sounds like a power issue. Anymore questions or diagrams that you need, feel free to email me at [email protected] and I should have and will send if you need anything else. I hope this helps and good luck.




2004 Chevrolet... • Answered on Dec 18, 2020

There is not a fuel cut off switch for a 2004 Trailblazer. Have your fuel pump relay checked, if it is good I would look at having your pump tested.

2004 Chevrolet... • Answered on Oct 13, 2020

Optra 5 2004 ls code 3241 worked for me . thankyou verymuch u guys saved me my time and money

2004 Chevrolet... • Answered on Apr 17, 2020

put key in ignition turn to the on position for ten minutes. dont touch it watch the security light on dash . after 10 minutes it should be off. if it is off turn ignition switch off for 5 secs. then proceed in cranking it. if security light dont turn off. you have bcm problems. it have to be towed in.

2004 Chevrolet... • Answered on Mar 25, 2020

Code 300 means you have a random miss that is not serious enough to pick one cylinder. The computer measures RPM on each cylinder as the plug fires. So it is not that a cylinder is not firing but rather that it is not producing enough power.Other causes are vac leaks and lack of fuel.

2004 Chevrolet... • Answered on Oct 20, 2019

It located behind the lower left side of dash.

2004 Chevrolet... • Answered on Oct 03, 2019

I would start with the checking the bulbs, fuses, then check the switch.

2004 Chevrolet... • Answered on Sep 16, 2019

Have you tried to add any refrigerant to it lately? The pressure can go up as it heats up, to the point where the pressure switch cuts the compressor off.

2004 Chevrolet... • Answered on Sep 15, 2019

Try right above your oil filter if it not there look on the front of the engine it's called a oil pressure switch

2004 Chevrolet... • Answered on Aug 21, 2019

this is a small leak in the evaporative emission control system.Most common cause is a loose or faulty gas cap but not always, Sometimes the check valve in the gas cap doesn't seat properly allowing the gas tank pressure to bleed down. The EVAP system needs to see a positive pressure in the tank.

2004 Chevrolet... • Answered on Jun 27, 2019

problem with this is what is what or no pic on it?

2004 Chevrolet... • Answered on Jun 27, 2019

The 2004 Trailblazer has two fuse panels, one in the under hood and one under the middle row seats. The radio fuse is marked RADIO fuse # 41 and is a 15 amp fuse located in the rear fuse panel. To access the rear fuse panel flip the seat behind the driver to the upright position, under it you can see the fuse panel and a diagram should be on the under side of the cover. 

Good luck and hope this helps.

2004 Chevrolet... • Answered on Jun 02, 2019

I disconnected the battery, removed fuses 10 and 28 adjacent the battery and waited twenty minutes. I then hooked the battery back up reinstalled the fuses and started the vehicle. The battery light went out and the battery not charging message did not come back on. I then went for a test drive. I had a celebratory adult beverage because it worked.

2004 Chevrolet... • Answered on May 22, 2019

Torque should be about 30-40 ft lbs. This is essentially tight by hand, no torque wrench is often used. See this how to video: Sorry the video wouldn't upload. But the shop (A1 Auto) tightened by hand and for me that's 30-40 ft lbs with open end wrenches.

2004 Chevrolet... • Answered on May 13, 2019

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