20 Most Recent 2004 GMC Sierra Denali - Page 5 Questions & Answers

syllvania #211-2 (most parts stores have books to look up bulbs)

Sylvania / Bulb - Dome Light
211-2 $2.99 at autozone

First i would listen to hear if the fuel pump is running!! It will sound like it is whinning back by the fuel hole in the side of the truck! Good possiblity that you burnt the fuel pump up in the truck!! I would try and go to the fuel filer if you dont see anything wrong with the pump! If the filter has been changed and still not crankin up then i would remove the fuel line ( may require special tool) and see if you are getting fuel to the motor!!

you need to get a slip ring wrenchto hold it you can get one at sears

default codes are supposed to be 0000 1234 9999

Did you try rotating the tires maybe front to back to see if noise disappears or moves with the tire? Otherwise maybe a wheel bearing.

There is no factory kill switch.
You need to explain your complaint ... Guessing at the reason will not help here.
If the engine spins around with the key but will not start then you have a crank no start. If you kick the bottom of the gas tank whild someone is turning the key to the start position and it starts then you need a fuel pump. Very common and about a $500 job on the low end.

here's a website that has all this information about all this and manuals everything totally free there are many actually but I personally like few .. let me know if u need help thanks

Doesn't sound like the all wheel drive is working.

Check the abs sensor on that wheel and it's wiring. It sits very close to brake disk and could be loose or fouls by dirt and corrosion. Easy to replace.

Taking the vehicle to a qualified repair shop an having a full scan of all the control module's on the vehicle should be the first step in the diagnostic procedure , All the instrument cluster gauge function's start in the PCM - engine computer . Sent to the instrument cluster over the GMLAN serial data network . Without testing we'd only be guessing . Probably has a U code stored in one of the module's pointing to a cause . Could be just a loose connection . Checking wiring harness connection's . Circuit Description The communication among control modules is performed through the high speed GMLAN serial data bus, the low speed GMLAN serial data bus, and with RPO HP2 the high speed hybrid GMLAN serial data bus. The modules that need real time communication are attached to the high speed GMLAN busses. There are several modules that act as the gateway module or translator for communication between the various serial data busses. With RPO HP2 the serial data gateway module (SDGM) is the gateway and on all others the body control module (BCM). All high speed modules are activated by a communication enable or wakeup circuit from another module as determined by the power mode master (PMM). Refer to Data Communication Schematics to determine the circuit and module that activates specific high speed modules. Signal supervision is the process of determining whether an expected signal is being received or not. Some messages are sent on a periodic basis and are interpreted as a heartbeat of a device. If such a signal is lost, the signal supervision part of the software will set a no communication DTC (U. code) against the missing device. This code is mapped on the Tech 2 screen as a code against the physical device. A lost communication DTC typically is set in modules other than the module with a communication failure. Speedometer The IPC displays the vehicle speed as determined by the ECM. The IPC calculates the mileage based on the serial data vehicle speed information from the ECM. The speedometer defaults to 0 km/h (0 mph) if the IPC detects a loss of serial data communications with the ECM. Tachometer The IPC displays the engine speed as determined by the ECM. The IPC receives a serial data message from the ECM indicating the engine speed. The tachometer will default to 0 RPM if: • The ECM detects a malfunction in the engine speed sensor circuit. • The IPC detects a loss of serial data communications with the ECM. CAN Communication Problem How to Diagnose Controller Area Network CAN http://www.bbbind.com/free_tsb.html free wiring diagrams here . Enter vehicle info. year , make , model an engine size . Under system click on body & accessories , then under subsystem click on communication systems . Click the search button ,then the blue link's . Communication network diagrams .

Your battery will not take a charge - replace it.

Hi the last digit is 0 this means its detected a fault but it does not know why the misfire is if it had 1 at end it would be sparkplug 1. and so on. 0 could mean there is a problem with the timing or there is something wrong with the coil pack , coil pack it could be a fault at the plugs or the wiring. if you remove the spark plugs and the one or 2 that don't look right, investigate them, make sure there is no problems with the case of the coil pack. color of the connections and the case cover no cracks or splits. it can also be blocked jets this can limit the fuel into the engine and cause the same fault.

Your GMC dealer can do it for you.

Transmission going bad! !

can be the exhaust shield/ shields or the cover depending if its still fitted. also the steering idler cover.

freezed