20 Most Recent 2004 Chevrolet Silverado 2500HD Questions & Answers


Under intake manifold on top of block,you need to remove intake to access sensors there are two of them you can't miss them when intake is off. After replacing sensors you need a new intake gasket.

2004 Chevrolet... | Answered on Jan 23, 2019


sure your not turning key to accessory position ? but then key wouldn't come out. maybe ignition switch is the problem.

2004 Chevrolet... | Answered on Nov 09, 2018


TOT.PART:(French) stands for TRIP: an (English).
You were holding the "Reset" button a bit too long and have changed the language options.
Solution: Hold the button a bit longer until you get it back to English.

2004 Chevrolet... | Answered on Oct 09, 2018


If you're comfy with manuals then i know few websites that can help you with it. Bcause I've got it from various websites so I
know how each site deals. try www.reliable-store com . Very helpful

2004 Chevrolet... | Answered on Mar 07, 2018


Most companies that produce oils and fluids for the consumer market publish an application catalogue which is often found online. These provide type and grade recommendations and quantities for many models so choose your favourite brand and search...

2004 Chevrolet... | Answered on Feb 14, 2018


The gas tank on your truck doesn't decide when the gas pump shuts off. It sounds like you think it's not as full as it is. Make sure your looking at the gas gauge instead of the temp gauge.

2004 Chevrolet... | Answered on Feb 12, 2018


Sounds as if you need to trace the wiring from the box to the plug, looking for a pinched or broken wire. There are special tools made to help find the break, but a visual inspection may well find the fault. If not, you can use a cheap test lamp with a pinpoint tip to probe the wire moving from front to back until you find where the current no longer shows.

2004 Chevrolet... | Answered on Jan 30, 2018


Lots of reasons ! The most common cause of battery drain on a good battery is leaving an accessory on (courtesy light?). A pure guess with no information would be the starter is on its' last legs. It might be the alternator or there could be a short to ground from corrosion/age. There are lots of troubleshooting guides on the web for a battery draining, here is an example:
http://www.gmtruckclub.com/forum/threads/battery-drain-issue.28504/

If you need further help, reach me via phone at https://www.6ya.com/expert/david_1f7d1c330c9dd97d

2004 Chevrolet... | Answered on Jan 20, 2018


Remove both of the ac connections under the hood in the firewall.. use a garden hose on the disconnected pipes and have someone slowly turn the water on...do one side first, then do the reverse side..this will flush the system of build up or corrosion...you should see dirty water, then clean water coming out...reconnect hoses at firewall..cheers

2004 Chevrolet... | Answered on Dec 11, 2017


I doubt you'll be able to buy a wiring harness from a dealer for a 13-year old vehicle. Plus, I doubt that it's a separate harness in the first place. Plan on visiting a junkyard and doing a LOT of splices

2004 Chevrolet... | Answered on Dec 09, 2017


check the fuse check the relay check the compressor and freon level

2004 Chevrolet... | Answered on Nov 25, 2017


Engine noises are hard to diagnose when following a description.
Have you tried a stethoscope or a socket extension pressed against the pan to isolate the location?

It is possible a crankshaft bearing or a connecting rod bearing has spun or is scored. If you can confirm the noise is in the bottom end of the engine and its approximate position it's time to remove the caps looking for a failed bearing.

The block transmits noises very efficiently so be sure the noise is not being transferred from a different location.

Here some info on the bottom end:


King Engine Bearing Crankshaft Installation Guide Feat XP Bearings

2004 Chevrolet... | Answered on Aug 31, 2017


14 volts is close (14.5-14.8 volts is required
and 9 when shut down indicates a bad battery
have it load tested and then have the alternator tested for rectifier pack operation
there should be 14.5 volts DC at the battery when running or it is not charging the battery
if you have 14 volts AC replace the alternator with a serviceable unit

2004 Chevrolet... | Answered on Aug 08, 2017


Hi im thinking there is a fuel pressure problem, this could be the regulator of the injection line. this is supposed to keep pressure in the fuel system by closing when the engine is turned off. in there line as well is a sensor for the ecu, this tells the ecu the fuel pressure so it can start or open more for more fuel into the system i think one or both of these has failed, if it fails the fuel by gravity will go back to the tank.

2004 Chevrolet... | Answered on Jul 10, 2017


The digital dash needs taken out and rebuilt or replaced. Ask your dealer about having it repaired or check out ebay. I had one fixed by a guy for my brother inlaw and it worked perfectly.

2004 Chevrolet... | Answered on Jul 04, 2017


could be the alternator

2004 Chevrolet... | Answered on May 16, 2017


This vehicle is 13 years old. Determine if it is feasible to tow it in and have it diagnosed to fix the problem.

2004 Chevrolet... | Answered on May 12, 2017

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