96 chevy blazer 4x4,,4.3 vortex..heat not as warm as need..?

(2011-11-30 15:20:05) 1. jimgreg Says: i need your info on the blazer,to get the heater to put out hotter than it is..its not real bad after 45 min of driving it..i love to see it hotter like 3 miles or so..the heat gauge on the dash shows 100 the lowest 260 the highest..after i even drive it 5 miles it reads bout 1 notch above the 100 mark..to me that shows the engine isn't getting that hot... OR WHAT CAN THIS BE?? i did burp it,,and the rad is full..heater core must be ok,both hoses are hot..its putting warm heat..i just want what its capable of,,and faster..help me2. thisiscrazy70605 Says: you might also need to have the engine thermostat changed. My mother-in-law's car had this failed with the item stuck open. The engine never came up to operating temp correctly.3. TomClancy Says: My 2001 Jeep GC used to be like that until I reverse and forward flush the heater core few times and then cleaned it out with CLR. After that I finished it with few more reverse and forward flushes with the garden hoes and it's back to burn your skin hot heat. Tag: 96 chevy blazer 4x4,,4.3 vortex..heat not as warm as need..?