I have a 1991 GMC sle sierra truck and my heater only blows when my truck warms up and sometimes that's a long time. Do I need another heater core?

I have a 1991 GMC sle sierra truck and my heater only blows when my truck warms up and sometimes that's a long time. Do I need another heater core? 1 Answer

Why would my 94 gmc k1500 5.7L make a loud pop and then almost die when accelerating after a stop sign? 1 Answer

It runs great when it's cold but once the truck warms up it starts acting up... What could I do to fix it?

my truck doesn't start after it rains, what should i do? 6 Answers

My Truck was running rough, so i put new spark plugs in it (cheap ones). It ran more smoothly, but now it won't start after it rains. If i put better plugs in would that fix things? I don't know what...

i unplug the resistor on my 1993 GMC pick up heater blower and the blower keep on blowing on high but the blower won't turn off when i turn the switch off 1 Answer

my blower motor won't operate on any other setting then high and keep on blowing when i unplug the resistor

1992 gmc sierra k1500 sle stepside 5.7l 350 v8 idling issue. 2 Answers

When I got my truck it started fine but was reving high then low constantly back and forth. I have replaced the distributor and all its parts, new sparkplugs and wires, new starter, new battery an...