Sulfur smell coming from my 2004 chevy colorado wont start unlss i jump it

The Chilton/Haynes repair manual we got for our 2004 Trailblazer has a fuel diagram. So I believe the same type manual for your Colorado should be no different as to information. Did find in research that there are plastic parts on the fuel lines that run under the air intake. Over time they become brittle due to engine heat since they are on top of engine but under the plastic air tube and are prone to leak over time. Not hard to fix, just a pain to remove the interfering parts.

The fan will continue to run until the coolant sensor reaches a predetermined point. The sulfur smell should be from the catalytic converter.

Julia
The car will not start because your battery is now faulty. The bad smell from the front of the car is the battery overheating. Being able to jump start the car off another battery is indicative of a bad battery in this case..

The battery is emitting hydrogen sulfide (H2S) gas and you will also find corrosion on your battery terminals.

When the battery is replaced , as it now must be, it is very important to to check the entire charging system on the vehicle.

Your alternator or voltage regulator may be faulty and it is important to ensure the charging system will not start over charging the new battery once it is fully charged.

Your heads may not have to come off, you have worn valve stem oil seals, some mechanics have the gear to change your stem seals without removing your heads, this is a massive save in labour costs

The sulfuric odor may be too much fuel, a rich condition caused by too much fuel pressure, bad regulator or no vacuum to the regulator . Bad O2 sensor , linked return line , stuck open injector pintles etc. .

If its spinning over good but wont fire, the computer needs to be reset . It should start then you drive it around to let it reset itself. check the pcm fuse

is the key youre using a copy? is it bent or damaged in any way? these new car ing. switches are super senitive

my 2004 chevy colorado information center has a "power failure" message, & will not go more than 25 MPH. What should I do?

i have a 2005 colorado it was in a accident the radio comes on but it does not pick up any chanel and thegas gauge does not work