» » »

GMC Q&A

Ask Your Question

2002 GMC Sonoma Question: Failed Radiator

 

Question

KeithRG, Omaha, NE, August 22, 2012, 03:46
 Enthusiast

Anyone heard of a radiator in a GMC Sonoma going bad after 50,000 miles?

1 Answer
Flag This
  • Answer #1

    Greg's Orange Auto (13991 Answers) , Orange, CA - (714) 361-9386
    globalhelper August 22, 2012, 06:17
     Master

    yes all the time the coolant(dex cool) is hard on radiators and makes them leak at seams

    Flag This
  • Reply

    KeithRG, August 22, 2012, 09:20
     Enthusiast

    Can I put a different antifreeze in the radiator beside the orange stuff?

    Flag This
  • Reply

    globalhelper, August 22, 2012, 09:31
     Master

    yes but the system has to flushed completely b4 you use a diff coolant. if not it will cause major damage to mix coolants. i rec you stay with dex but change every 30 to 40k miles

    Flag This
  • Reply

    KeithRG, August 22, 2012, 15:58
     Enthusiast

    I bought the truck with 30,000 miles and in 3 years put 20,000 more miles on but never changed the coolant. There was no indication that I could see that it need to be changed and the places I took to have work done never said the anti freeze was bad.

    Flag This
  • Reply

    globalhelper, August 22, 2012, 16:37
     Master

    well maybe you need a new mech.

    Reply
    Flag This