Pressure gauges

Asked by GuruSS71K May 30, 2019 at 10:39 PM about the 2007 Chevrolet Trailblazer LT 4WD

Question type: Maintenance & Repair

my serpentine belt broke, ended up replacing the
belt, water pump. After replacing the fluids I lost,
my oil and coolant pressure gauges are not
working

1 Answer
11,255

FJ4072 answered 4 years ago

Talking out loud here. Might be stepper motors on back of gauges. If it were me, I'd turn off all HVAC, and disconnect the battery for a while. When removing the fan clutch, did you remember to plug back in the electrical connector on the drivers side of the fan shroud? Really leaning towards stepper motors here. The oil pressure sensor is located out of the way right above the oil filter. In 07, the coolant sensor is on passenger side way in the back. Both are way out of the way, unlike 05 and older, the temp sensor is located right above thermostat, kinda of close there.

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