because frost is bad for batteries...
maybe try another battery and it'll come up. Don't choke too much, get it on then increase rpm to keep it on. Never let go till it's warm!
5W30 in cold weather. 10W30 in hot weather.
Low compression, weak spark or poor fuel delivery can make a vehicle more difficult to start in the cold.
Start with flushing both heater cores. The rear one may be plugged with crud.
the cold war start and finish is (1945-1991)
I need to know why do i need to crank my chevy truck to start ?
I have the same problem with my 93 Chevy suburban also, and I found that the rear has a separate heater core located behind the rear right wheel well. From what I understand you have to locate it, and test it, and then flush it if the hoses are clogged.
5W30 in the cold months and 10W30 in the hot months ONLY.
cold pressed olive oil farcked mine up BIG TIME!
A good tune-up will probley do the trick.
There is no heater matrix for the back air vents, only and evaporator for the A/C. My suburban always blowed cold until I added an extra rear heater matrix.
I was told it was due to a leaky manifold gasket, which caused vacuum leak and the engine to run lean. I have not had a chance to replace the gasket yet to see if that resolves it.
try testing the battery