go to autozone.com. and click on the heater core part for your sonoma. then there should be an install manual button u click on on the page. i have a 98 gmc wit a heater core out also. i think the 97 models you just have to take off the dash.
How do i change the heater core on a 1997 ford e150
coolant on the floor
How to change a heater core on a 1997 Pontiac grand am
Well, i have a 1998 Gmc Sonoma. My heater core just went out and i took it to all the mechanics in my town. they all sayed it would take at LEAST 5-9 hours of labor. plus the price of the core
Drain the water from your 1997 Chevrolet Lumina cooling system. Remove the water supply lines to your heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
you have to take the dash easyout to get to the heater core box . Its a two man job and is not easy.
could be a number of reasons etc bad thermostat,clogged heater core,leaking heater core,
the HEATER CORE can be removed by removing the dash. how do i ghange the dash
how to replace a heater core in a 1997 Chevy blazer
How do you remove the heater core on a 1997 Toyata Corolla?
Drain the water from the cooling system. Remove the water supply lines. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
change out the heater core