Changing a heater core in a 1986 Corvette is considered a difficult and time-consuming job. It's not a task for a novice mechanic. Here's why:
* Dashboard Removal: You'll almost certainly need to completely or largely disassemble the dashboard to access the heater core. This involves removing many components, including the instrument cluster, steering column (possibly), and various trim pieces.
* Tight Space: The space around the heater core is very cramped, making it difficult to maneuver tools and your hands.
* Potential for Damage: There's a significant risk of damaging delicate dashboard components during disassembly and reassembly.
* Cooling System Flush: After the replacement, you'll need to thoroughly flush the cooling system to remove any debris that might have entered during the process.
In short: Unless you have significant mechanical experience, especially with automotive interiors and HVAC systems, it's strongly recommended to take your Corvette to a qualified mechanic for a heater core replacement. The labor cost will likely be substantial due to the complexity of the job. The cost of a new heater core itself is relatively modest compared to the labor.
