Parts for your 1996 Daihatsu Gran move-Heater core

1996 Daihatsu Gran Move Heater Core — Purpose, Care, and When to Replace

Based on technical references, the 1996 Daihatsu Gran Move (also known as Pyzar, G300-series) is fitted with a conventional heater core. The Daihatsu Pyzar/Gran Move G300 Workshop Manual HVAC section outlines a “Heater Unit” with heater core removal procedures, and the Daihatsu Electronic Parts Catalogue (Group 87: Heater Unit) lists a heater radiator/core for Gran Move chassis codes from 1996. Independent service databases used in AU/NZ workshops also include labour times for “heater core — remove & refit” on this model, confirming fitment.

On the 1996 Gran Move, the heater core is a compact radiator tucked inside the HVAC box behind the dash. Hot engine coolant flows through it, a fan pushes air across the fins to warm the cabin and clear the windscreen. It’s a simple bit of kit, but critical for fog-free winter driving and steady demist performance.

Tell-tale signs it’s on the way out include a sweet coolant smell inside, misting that won’t quit, oily film on the glass, damp carpet at the passenger footwell, poor cabin heat, or a slow coolant loss. If any of that pops up, it’s time to pressure-test the cooling system and inspect the heater hoses and core.

Replacement is more involved than most driveway jobs because access generally requires significant dash disassembly and removal of the heater box. A capable DIYer with time and a workshop manual can take it on, but many owners in Australia and New Zealand leave it to a technician. Expect several hours of labour depending on trim and A/C configuration.

Good servicing helps the heater core last:

• Refresh coolant on schedule (typically every 2 years/40,000 km for conventional green coolant, or per the coolant spec in the owner’s/service manual). Use the correct ethylene‑glycol, silicate‑free mix at about 50/50 with demineralised water.
• Bleed air properly after cooling-system work: heater set to hot, engine at operating temp, top up as bubbles purge. Check for a model-specific bleed point if fitted.
• Inspect heater hoses and clamps at the firewall for seepage and ageing, replace if swollen, cracked, or corroded.
• Keep the cooling system clean, sludge and corrosion are the main heater-core killers.

If the core fails on the road, a workshop can sometimes bypass it temporarily to keep the engine safe from coolant loss, but you’ll have no cabin heat or demist. The proper fix is core replacement using quality parts and new seals, then a careful refill and bleed.

Popular questions about 1996 Daihatsu Gran Move heater cores

Where is the heater core located on a 1996 Gran Move?
It sits inside the HVAC/heater box behind the dashboard, roughly central to the vehicle. Access is from inside the cabin. Getting to it typically means removing trim panels, the glovebox, and portions of the dash and heater box.

Can a leaking heater core be bypassed temporarily?
Yes, many workshops can loop the heater hoses in the engine bay to isolate the core and stop coolant loss. That’s a short-term measure only—you’ll lose cabin heating and effective demisting, and the proper repair is to replace the core and renew coolant.

How long does replacement take and what else should be replaced?
Plan on several hours of labour due to dash access—often a half to full day depending on equipment level. It’s smart to replace heater hoses, O-rings/seals, and hose clamps at the same time, then refill with fresh, correct-spec coolant and bleed the system.