Look for an access panel beneath the rad.
A diagram of the heater core of a 2001 GMC Jimmy can be found in the service manual. It outlines the location of all the components and how they are connected.
Where is the oil filter on a 1999 gmc jimmy
Fuel filter may be clogged. Replace the fuel filter.
gmc jimmy rear reservoir location
6 quarts
where it the temp sensor sender located on a 2001 gmc Jimmy
heater control valve located on 2001 gmc jimmy 4.3l
How do you change the abs pump on a 2001 gmc jimmy
The fuel pump is located in the fuel tank and is attached to the fuel sending unit.
There is an access in the cover below the radiator for the filter.
2001
in the gas tank