Got a leaky water pump on my 2000 Suburban 1500 LT. Looking at the replacements on Rock Auto I see there are 2 different versions - one for a 1.88" thermostat outlet and one for a 2.05" thermostat outlet.
Wondering if there is a way to tell which pump I have with taking the thermostat off and measuring. Vehicle options, VIN #, hose size? I'm assuming worst case scenario is if I buy the wrong one I just need a new thermostat?
I know someone on here has been through this before. Thanks in advance.