06 hummer engines stalls

Big engine needs a good strong drive belt. Belts stretch after time and just need replacing. I would start there first. Next if you notice any sputtering when it's about to stall then it may be a bad or clogged fuel filter.

I had this same problem with my 2003 H2, my mechanic found that the fuel diaphragm was cracked and this was allowing my truck to flood. If it was a cold start, the extra fuel would evaporate and it would start fine. It actually got to the point where I would stall at a stop light or stop sign at idle. The part was is the neighborhood of $175.00 and about 1 hour of labor to install.

This could be caused by a bunch of thing's , fuel system , engine sensors , ignition system , PCM etc.... Testing is the way to eliminate guessing . Viewing scan data is the best way to diagnose these type problems .
047 Engine Hard to Start or No Start Scan Data for Ignition
048 Engine Hard to Start or No Start Scan Data for Starting Problems
002 Fuel System Tests Start Here

Your best bet take it to a qualified repair shop .

There are several possibilities, but based on how you described the symptoms I suggest a profile igniton pickup. On these systems the failure usually begins as dropping a cylinder occasionally,like a misfire,mostly during high underhood temperatures,will manifest into stalling and finally into a stall with no resart condition. Symptoms are most likely to occur in summer. The pickup is inside the distributor and the distributor must be disassembled to install it,the trickiest part being the removal and installation of the distributor drive gear. They are iron and easily broken. The simplest solution is another distributor. The ignition modules typically do not fail in this manner,but this is classic for the pickup coil. A code for loss of pip signal should be present, it is possible for a code to not be present,though very unlikely. Having worked on these systems for years this would be my first area of diagnosis.

This stalling is fuel related issue.When the fuel flow becomes low, the engine ask for fuel.But fuel pump does not send required fuel and engine stalls.In some cases, it stall then dies after stalling for few minutes.In some cases, if stalls for few seconds or minutes, then again get required fuel , as you accelerate more and engine starts/runs normally.But once this problem is started and it repeats again n again.This is indication f low fuel pressure.Get the fuel pressure checked and replace fuel pump and fuel filter.-----------

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When the engine dies do the accessories such as radio, lights, heater all die along with the engine; or do they keep running as they were prior to the stall?
If they all quit together (as if the key was shut off) I would check the electrical part of the ignition switch or the battery cables and connections (check both ends of cables and little ground wire near battery that connects to car body). The ignition switches are a well known culprit in the s10's.

If the radio and lights keep running after the stall, I would look at the crank position sensor, ignition coils etc.

Good Luck!

okay try this....talk to your parts store and get a battery load tester, and find out if the battery is indeed dead. My guess is it sounds like the Altenator is dying. they are around 50-100 and can be install by a pro in minutes.

Honda is notorius for bad MAIN RELAYS the solder in them crack and can not be seen with the nacked eye. This is due to simple expansion & contraction the solder heats up & cools down. Try that.

need more inform if you hear the startor turn over the engine when the car wont start

HI
when it was battery fault no restarting again because of died power in the battery ????
so the alternator or harnesses is the most causes

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