MY SILVERADO IS A 1500 4

  • Tiny
  • ckueny
  • 2004 Chevrolet Silverado
  • 20,000 miles

My silverado is a 1500, 4.8 engine. Recently when starting the vehicle to warm up, the hvac system will not blow hot air. The hvac does work but only blows cold air. It is not until I put the truck in gear and start driving for the air to be hot. What could be causing this?

Saturday, January 26th, 2013 AT 2:37 AM

3 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

Should have no relation to the shifter. How long sitting will it take for heat to come out?

Roy

Was this
answer
helpful?
Yes
No
Saturday, January 26th, 2013 AT 2:38 AM
  • Tiny
  • ckueny
  • Member

I have had it running for at least 30 minutes with only cold air blowing. But once I start driving the hot air will blow instantly.

Was this
answer
helpful?
Yes
No
Wednesday, February 6th, 2013 AT 1:24 AM
  • Tiny
  • jj58551
  • Member

Could be thermostat. Check coolant. As well.

Was this
answer
helpful?
Yes
No
Monday, February 11th, 2013 AT 3:43 AM

Please login or register to post a reply.

Similar Questions