Hello,
I have a 2001 Blazer and recently had the blower motor, intake manifold replaced, and a coolant flush. Now, I'll start it, and it starts fine, I'll drive it for a while and when I go to re-start it an hour later, it sputters, starts but seems to re-set a few things like my radio and flips me out of 4x4. This has now happened 3 times...any help would be appreciated.

 

check distributor cap and rotor for corrosion. possible fuel injector poppet sticking due to carbon build up. how does it start after sitting overnight? do you have an engine light on? when you say radio resets do you mean the time resets? not sure if both problems related but i would check battery and connections.

 

Thanks for the suggestions. It starts fine after sitting overnight, and it's been -30C (with windchill) the last couple days. The radio flips to CD, and no, the engine light doesn't come on. It only struggles after it's been sitting for a short time. Thanks again, guess I'll have to get my mechanic brother-in-law to check those points.