20 Most Recent 2004 Chevrolet Avalanche - Page 3 Questions & Answers


Sounds like an indication of a burnt out bulb. Check the front bulbs

2004 Chevrolet... | Answered on Apr 16, 2016


batteries will self discharge over a period of time especially in cold weather
however 3 batteries replaced in 6 months raises issues
first question is why would they not charge up on a charger or a run in the vehicle
second question is the battery of sufficient size to run the electronics
have you had the alternator bench tested to check for correct out put, regulator operation and rectifier problems
check drive belt condition and tension
the wire could be a ground wire but I would think that if it is significant then something would not be working correctly

2004 Chevrolet... | Answered on Dec 30, 2015


Possible causes
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection Help with this Tech notes
If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.
The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate.

Read more: http://www.helpforcars.net/obd_codes/p0171_chevrolet.html#ixzz3tjvehfyV

2004 Chevrolet... | Answered on Dec 08, 2015


So what is the question? It would appear that you have a catalytic converter issue going on. Replacement is the proper thing to do; removal is illegal in most jurisdictions. Besides, unless you want a constant Check Engine light lit, along with the possibility of very poor fuel economy, replacing the cat is the best option. Without it, the O2 sensors will not operate correctly and the PCM will default to a preset fuel usage that will decrease your fuel mileage by 20 to 35 percent.

2004 Chevrolet... | Answered on Dec 08, 2015


Possible defective heater motor or loose wiring to it. Try slapping on the bottom of the heater motor assembly the next time it shuts off. If it restarts, suspect a bad motor or loose connection to it

2004 Chevrolet... | Answered on Sep 07, 2015


the little magnet thing is what keeps the light off so you have to fix what is broken first
it is thee to tell the abs that the wheel is turning and if the system is not complete then it shows up as a fault and the light comes on
once you have had it fixed then use a scan tool to reset the system

2004 Chevrolet... | Answered on Jul 03, 2015


If i'm not mistaken it is a 25a silver fuse in the box next to the drivers door. Should say LT Door on the cover.
Also check the DDM 10a fuse.

2004 Chevrolet... | Answered on Jun 02, 2015


Is the cooling system full of coolant ? Do you have manual or automatic HVAC ? Possible water pump problem !

2004 Chevrolet... | Answered on Apr 27, 2015


Change ignition barel with keys

2004 Chevrolet... | Answered on Apr 24, 2015


vaccuum leak in heater panel,if it isnt,it could be the control unit or (head) get a used one at a junk yard

2004 Chevrolet... | Answered on Apr 13, 2015


those pushbutton switches are known to be bad, local wrecker should be able to supply you one .

2004 Chevrolet... | Answered on Mar 07, 2015


Could be few things,,, colapsed presure line to rackpionion,or stopped up return line from rack,,,, or if you have hit any curbs or large pot holes the rackpinion itself could be bad

2004 Chevrolet... | Answered on Feb 21, 2015


You will have to have a dealer flash the BCM. If the BCM didn't have the same Vin identification code, the used one will not operate correctly. Each truck has its own unique Flash program

2004 Chevrolet... | Answered on Feb 19, 2015


What you have is that the Amp that come equipped with Truck has to be unplugged and bypassed. The factory radio has a security code built in and uses a amp to push the speakers. As long as the amp is hooked up,you will not get any sound from speakers

2004 Chevrolet... | Answered on Feb 19, 2015


Usually when these Gauges go out it is because of a faulty BCM( Body Control Module) The BCM controls all dash instruments . If it is the BCM you will have to get a dealership to flash the new one. Before doing that though check all fuses under hood and inside. It should say gauges or BCM

2004 Chevrolet... | Answered on Feb 19, 2015


Assuming you have looked at all your fuses in that system, First disconnect and clean main ground on battery. Clean positive connection too. Reconnect ground wire last. If problem persists, have the alternator and battery tested. That is often a free service at chain retailers. If everything checks out, instrument pod my have issues. That is a more expensive fix because it must be removed in one piece and sent off for repair.

2004 Chevrolet... | Answered on Feb 15, 2015


With key off unplug the mass air flow sensor and try to start the vehicle. If it starts and runs fine, try cleaning it with mass air sensor cleaner, and plugging it back in. If cleaning doesn't solve the problem it may need replaced.

2004 Chevrolet... | Answered on Feb 12, 2015

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