replace rad, water pump and temp sensor my rad, fans dont come on replace 3 fan relays ac on no fans but i put direct power to the fans what makes the fans turn on other then relays thanks fans turn on with direct power
2007-01-24 00:47:31 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ GMC
You people are silly. There is not a single correct answer. They are NOT famous for bad thermostats. They however are famous for people not taking care of their aluminum engines by replacing the coolant every couple of years and as a result, bad head gasket. If you are loosing coolant-especially if you don't know from where, get ready to spend a lot of money for a new engine or hg replacement.
Come over to cadillacforums.com and we will help you out.
2007-01-24 03:08:11 · answer #1 · answered by Jon S 1 · 0⤊ 0⤋
There must be power to relay for it to work.ck the feed wire to see if its hot, also remember the pcm commands the fans on when temp gets to about 210 degrees.A scan tool would be a great help in diagnoising your problem to.
2007-01-24 00:56:50 · answer #2 · answered by deltech 4 · 0⤊ 0⤋
yes all of that is good but try this as well disconnect the fan and jump the connection to the battery (from the fan) this will check to see if the fan is in order and working, if the fan does not turn then it is bad and all the rest is good..
Good Luck
If all fails then go to a shop and get help.....
2007-01-24 01:06:54 · answer #3 · answered by red 3 · 0⤊ 0⤋
Funny that you have replaced almost everything but the fans! I don't see you mentioned about replacing it.
2007-01-24 01:16:39 · answer #4 · answered by MINH H 3 · 0⤊ 0⤋
Also, with the switch on, check and see if you're getting power at the connection/harness. Back track from there...
2007-01-24 00:57:43 · answer #5 · answered by tygger 2 · 0⤊ 0⤋
you have a sensor that tells the fans to turn on... try replacing that.. that is wat tells the relays to turn the fan on.
2007-01-24 00:52:36 · answer #6 · answered by Anonymous · 0⤊ 0⤋
caddy's are famous for bad thermostates
2007-01-24 01:31:46 · answer #7 · answered by Bird 2 · 0⤊ 0⤋