The heater core under the right side of the dashboard may leak engine coolant which can puddle on the passenger front floor. The loss of coolant may cause an engine overheating condition. Our technicians tell us that removal of the dash board is necessary to replace the heater on these vehicles.
Car Problem Reports
GMC Jimmy Heater Core Under Right Side of Dashboard May Leak Engine Coolant
GMC Jimmy Problem
Average Mileage: 142,517 mi (72,586 mi - 175,000 mi)
Smell antifreeze when heater on ok with a/c No signs of leak yet
Visitor, 2000 GMC Jimmy, 135,000 mi
Coolant not puddling on floor yet, BUT, when heater is on, you can smell coolant. Very small leak, but, will be replaced next week. Quoted $1000, and yes, I have a VERY reputable mechanic. Still cheaper than a car note.
Visitor, 1997 GMC Jimmy
antifreeze leaking on passenger floor.....remove dash and replace heater core
Visitor, 1999 GMC Jimmy, 172,000 mi
Leaking fluids and had to remove the dash to replace the heater core.
coolant leaked out of my heater core and burned out my fan motor this happened last fall and repairs have not been made yet its at the bottom of the list
Visitor, 2000 GMC Jimmy, 175,000 mi
is leaking on the right side and its overheating