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💧 DISHWASHER, TOP CONTROL, DRY BOOST • 2019–present

GE GDT645SYNFS Repair Guide

GE’s top-control mid-liner with Dry Boost and steam prewash — fine-filter design with display codes.

Maintained by the Arizona Appliance Repairs editorial team · Costs are Arizona market ranges, not list prices · How we verify this
Dishwasher, top control, Dry Boost illustration
Dishwasher, top control, Dry Boost
⏳ LIFETIME REPAIR COST — GE GDT645SYNFS
Expected lifespan9–12 years
Repairs over its life2–3 typical
Lifetime repair spend$300–$450
Averages out to~$35/year

See the full lifetime repair cost guide for dishwashers →

Common problems & typical repair costs

ProblemLikely causeTypical fixOEM part #Typical cost
Not draining Filter/pump Clean; replace — $0–$300
H2O code Fill problem — supply/valve Check tap; valve — $0–$250
Not drying Rinse aid or vent fan Fill aid; replace vent — $0–$230
Leak detected Base moisture Find source — $100–$350

Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.

Error codes

CodeWhat it means
H2O Fill
PrS Pressure sensor
LEAK Base moisture

Tech notes

Fine filter = monthly rinse. Dry Boost still benefits from rinse aid — the two are additive, not alternatives.

Cost guides for this machine’s common repairs

💧 Dishwasher
Not draining
$100–$300 avg repair
💧 Dishwasher
Not filling / inlet valve
$120–$250 avg repair
💧 Dishwasher
Not drying
$120–$280 avg repair

DIY step-by-step instructions for this model

How to Clean the Filter & Spray ArmsEasy How to Fix It Not DrainingEasy How to Replace the Water Inlet ValveModerate How to Fix Dishes Not DryingEasy
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♻️ NOT WORTH FIXING?

We'll buy your GE GDT645SYNFS — or haul it away.

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