HUMMER H3 Thermostat replacement Cost
2005–2010 · Engine, Fuel & Emissions system
Typical range
$280–$2.1k
Parts + labour
Labour hours
1–4h
At a typical garage
The thermostat regulates engine temperature by controlling coolant flow to the radiator. A stuck-closed thermostat causes overheating; a stuck-open one keeps the engine running cold, increasing wear and reducing heater output. HUMMER H3 thermostat replacement costs $280–$2074.
Typical parts included
- Thermostat housing
- Thermostat
What affects the price
- OEM vs aftermarket thermostat (OEM strongly recommended for reliability)
- Whether the housing and gasket are replaced too
- Coolant top-up cost after the job
Common questions
How long does this repair take?
Thermostat replacement on a HUMMER H3 typically takes 1–4 hours at a garage.
How often does this need to be done?
For a HUMMER H3, this is typically needed thermostats are replaced on failure; typical lifespan is 80,000–100,000 miles.
Other engine, fuel & emissions system repairs on the HUMMER H3
- ABS hydraulic unit replacement$421–$771
- ABS sensor replacement$173–$318
- ABS system bleeding$139–$254
- AC compressor clutch replacement$347–$635
- AC compressor replacement$371–$681
Thermostat replacement cost on similar cars
- HYUNDAI Santa Fe$225–$413
- HONDA CR-V$225–$413
- LEXUS RX$248–$454
- TOYOTA Highlander / Kluger$225–$413
- KIA Sorento$225–$413
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