So I was told by my dealership that there are no glow plugs on the 05 trucks.. and that I don't have to wait to start the truck regardless of how warm/cold it is (obviously needs to be plugged in when it's really cold). So is this the case??

You need to find a new dealer there are Glow Plugs have to have them.

I'm not aware of the '05's being without glow plugs. These trucks have fast heating glow plugs that should not stay on for more than about 3 sec's. The instrument pannel has a pig tail looking light that is in the upper left hand side by the CEL. If it is warm enough out the glow plug indicator may not turn on. Mine doesn't here in Kalifornia except in the winter mornings.

Maybe that the dealership where the guy got that 4004 Dmax?

Well having just bought a 05 cc duramax, yes there are glowplugs but they did some things so you wouldnt have to wait as long.

This is from my local Chevy tech man,

first the glowplugs start warming up as soon as you open the drivers door,
and second as soon as you hit the unlock button on the remote if you have one.

This allows you to hop in and start without waiting for most cold starts, now I havent tried it in the winter yet so I will have to check on that


Charles in Iowa

Well having just bought a 05 cc duramax, yes there are glowplugs but they did some things so you wouldnt have to wait as long.

This is from my local Chevy tech man,

first the glowplugs start warming up as soon as you open the drivers door,
and second as soon as you hit the unlock button on the remote if you have one.

This allows you to hop in and start without waiting for most cold starts, now I havent tried it in the winter yet so I will have to check on that


Charles in Iowa

i have my doubts on that...sounds to me like some tech's mouth is writing checks that his ass can't cash....

So I was told by my dealership that there are no glow plugs on the 05 trucks.. and that I don't have to wait to start the truck regardless of how warm/cold it is (obviously needs to be plugged in when it's really cold). So is this the case??


Your comment on the dealer is interesting... When I bought my truck, granted it was 2002 when not too many were sold yet, but the Dealer's - Sales Rep and Service Manager were willing to tell me anything just to sell the truck.

Example: I had done research and knew that it had a fuel cooler but I asked the GMC Sales and Service Manager what that "radiator like thing" was in front of the fuel tank. The sales rep didn't know and deferred to the Service Manager who emphatically stated that it was a fuel tank HEATER so the fuel wouldn't gel in the tank. What a laugh and what a bunch of Bull___T!

Some "Mr. Goodwrench" he was.....
-:t

This should answer any questions. This is for 2005.

Glow Plug System Description

In the diesel engine, air alone is compressed in the cylinder. Then, after the air has been compressed, a charge of fuel is sprayed into the cylinder and ignition occurs, due to the heat of compression. Eight glow plugs are used as an aid to starting.
Control of the instant start system (ISS) glow plugs is accomplished by an electronic glow plug control unit and 4.7 volt glow plugs, requiring 2 seconds to heat up to 1,000°C (1,832°F). The temperature and the power consumption is controlled between the engine control module (ECM) and the controller within a wide range to suit the engine's pre-heating requirements. Each glow plug is energized individually. This capability yields more optimum heat times for the glow plugs, thus pre-glow times can be kept to a minimum for short wait to crank times and maximum glow plug durability. A DTC will set if there is a glow plug system fault.
A normal functioning system operates as follows:
• Turn the ignition ON with the engine OFF, and at room temperature.
• The glow plugs turn ON and heat up in 2 seconds and then are pulse-width modulated (PWM) for another 2 seconds.
• The glow plug wait lamp is ON for 1 second.
• If the engine is cranked during or after the above sequence, the glow plugs may cycle ON and OFF after the ignition switch is returned from the start position, whether the engine starts or not. The engine does not have to be running to terminate the glow plug cycling.
The glow plug initial ON time will vary based on the system voltage and temperature. Lower temperatures cause longer ON times.
The ECM provides glow plug operation after starting a cold engine. This post-start operation is initiated when the ignition switch is returned to Run, from the Start position. This function helps clean up excessive white smoke and/or poor idle quality after starting.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1458447&evc=sm&pubid=1058&cellId=84207&mspsdsubkey=4255#ss1-1458447">Glow Plugs

The glow plugs are 4.7 volt heaters in each of the cylinders that turn ON, then pulse-width modulated when the ignition switch is turned to the RUN position prior to starting the engine. They remain pulsing a short time after starting, then they are turned OFF.
A Wait to Start lamp on the instrument panel provides information on engine starting conditions. The Wait to Start lamp will not illuminate during post-start glow plug operation.
<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1458447&evc=sm&pubid=1058&cellId=84207&mspsdsubkey=4255#ss2-1458447">Glow Plug/Controller

The glow plug controller is a solid state device which operates the glow plugs. The glow plug controller is connected to the following circuits:
• The fuel heater ignition 1 voltage circuit
• The battery voltage circuit
• The CAN communication circuit located between the engine control module (ECM) and the glow plug controller
• The engine ground circuit
• The glow plug supply voltage circuits located between the glow plug controller and the glow plugs.
The glow plug diagnostic circuits are directly monitored individually by using a separate transistor to control current to each glow plug. Individual diagnosis is thus possible for every glow plug.

GMCID...good read, thanx

This was the same salesman that told me that the rebate was ending on June 30th (not July 5th). So anyways.. I've put almost 300 miles on the truck in 3 days (because of the holiday weekend) and absolutely love it.. no one complaint.. all smiles.

Thanks for answering 1 of my many questions to be asked.