20 Most Recent 2004 Chevrolet Silverado 1500 Crew Cab - Page 2 Questions & Answers

Have you checked B+ power feed for memory to the PCM ? The PCM/ECM - engine computer has a couple of power feeds and one is for the keep alive memory . Looking at a wiring diagram of the powers and grounds would show that . Testing with a volt meter would show if it has power or not . Check PCM B fuse 20 amp located in the under hood fuse box . An don't just look at it ,check for voltage across the fuse . This fuse should be hot at all times .

just depends on what work was done and what was replaced last service clatter and loss of power etc could be timing out . a spark or fuel delivery issue to clear the codes undo the battery terminals ...count ten reconnect if engine light stays on there will be fault codes to be read from the ECU

Drivers side (under the hood) by the empty battery tray. The inside large one is the ecm. There are tiny red clips that get pushed back first. Then about the center you push in and the whole clip rotates and then the whole thing comes of the ecm. Bottom one is the same. Unit clips in top tabs. Lift them slightly and remove ecm

Light blue with black and black are the two wire colors. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Please rephrase the question

Take VIN#, title and driver's license to dealer and they can give you code.

Yours will be similar to this one...................... 20 Awesome brake line diagram 2000 silverado images

The guage needs to read between 35/40 psi.. If its much higher you may be overfull, this causes it to not cool.. Fix by letting some freon out, then top it back to needed pressure.. If pressure is correct, it would be a clog in the system.. Usually an orafice tube or accumulator..good luck!

this sounds like a problem I once had, the button was pushed too hard and is stuck , try to keep manipulating it until it releases, worse case scenario, yo may have to remove the face plate, to get at the switch to repair it

I had that problem with my 04. Found out it was the "Blend" door that was bad. After I had it replaced, no more problems.

Which of these transfer case's does your truck have ? Transfer Case - NVG 149-NP3 Transfer Case - NVG 246-NP8 Transfer Case - NVG 261-NP2 Transfer Case - NVG 263-NP1 The NVG 263 transfer case features a three button shift control switch located on the instrument panel. DTC B0790 DTC B2725 DTC C0306 DTC C0327 DTC C0359 DTC C0379 DTC C0550 The NVG 246 EAU transfer case features a 4 button shift control switch located on the instrument panel. DTC B0790 DTC B2725 DTC C0300 DTC C0305 DTC C0306 DTC C0321 DTC C0327 DTC C0359 DTC C0374 DTC C0379 DTC C0550 Regardless both of these switch's are input's to a control module . There are probably DTC'S - diagnostic trouble codes stored . You should have the vehicle checked for DTC , That means taking you vehicle to the repair shop .

The NVG 263 transfer case features a three button shift control switch located on the instrument panel. When the ignition is in the RUN position, the transfer case shift control module (TCCM) starts monitoring the transfer case shift control switch to determine if the driver desires a new mode/gear position. At a single press of the transfer case shift control switch, the lamp of the new desired position begins flashing to inform the driver that the TCCM has received the request for a new mode/gear position. The lamp continues to flash until all shifting criteria has been met and the new mode/gear position has been engaged. Once the new mode/gear position is fully active, the switch indicator for the new position remains ON constantly. In the event that the TCCM can not or will not complete the shift, the indicator returns to the previously selected position; this is a Transfer Case Shift Control Switch Indicator Flashes, then Returns to Previous Mode condition. The New Venture Gear model NVG 246 RPO NP8 transfer case is a two speed automatic, active, transfer case. The NVG 246 EAU provides 5 modes, Auto 4WD, 4HI, 4LO, 2HI and Neutral. The Auto 4WD position allows the capability of an active transfer case, which provides the benefits of on-demand torque biasing wet clutch and easy vehicle tuning through software calibrations. The software calibrations allow more features such as flexible adapt ready position and clutch preload torque levels. The technology allows for vehicle speed dependent clutch torque levels to enhance the performance of the system. For example, the system is calibrated to provide 0-5 ft lb of clutch torque during low speed, low engine torque operation, and predetermined higher torque for 40 km/h (25 mph) and greater. This prevents crow-hop and binding at low speeds and provides higher torque biases at higher vehicle speeds, in order to enhance stability.

Is there power (B+) an ground's for instrument cluster ? When you turn the key to the run position ( not start ) do the gauges do the sweep test ? Did you perform the Instrument Cluster Diagnostic System Check? Go to Step 2 Go to Diagnostic System Check - Instrument Cluster 2 Turn the ignition ON, with the engine OFF. Observe the instrument cluster. Does the instrument cluster perform the displays test? Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 Turn the ignition OFF. Disconnect the IPC. Turn the ignition ON, with the engine OFF. Connect a test lamp between the ignition 1 voltage circuit and a good ground. Does the test lamp illuminate? Perform Diagnostic System Check - Instrument Cluster , Diagnostic System Check - Driver Information Systems or Diagnostic System Check - Audible Warnings before using the Symptom Tables in order to verify that all of the following are true: • There are no DTCs set. • The control modules can communicate via the serial data link. Review the system operation in order to familiarize yourself with the system functions. Refer to the following: • Instrument Cluster Description and Operation • Indicator/Warning Message Description and Operation • Driver Information Center (DIC) Description and Operation • Audible Warnings Description and Operation If you don't know about serial data communication an DTC'S I strongly suggest you take your vehicle to a Chevy dealer or an ASE certified repair shop .

hello, it sounds like the combination switch is going bad and you have to replace the unit which is the part that the turn signals and the e-flasher is and that is in the steering column under the steering wheel and horn. the other is that you have a short in the wiring some were and a electric shop or a good tech should take a look at.

This is usually a problem with the inst. cluster very common problem in the 2003-2005 silverados

The bulbs are soldered in..they can be removed and replaced, it is just delicate work. Go to radio shack with an old bulb and the ones you need. There are 2 different types of bulbs..6 with blue rubber covers and 2 without and cover.. Good luck

Hi Ricky: - I'd start by checking the engine coolant level. If there is no coolant, there is no heat source. - Some history should help you to locate the problem. - If you just drained the system and replaced the coolant, there will probably be an air lock. You will need to "prime" the heater to get the air out. Reply as a comment to this post if you need more info. Cheers.

Your best bet is to take it to a ASE certified repair shop ! You have no idea of the electronics involved an you don't have the diagnostic tools to deal with this . I know you think you do but you don't have a clue.

yes it could or ball joints

The only lasting way to fix rust is to replace with new metal. You can find repair panels online.