1991 GMC Sierra 4×4 Instrument cluster
Question:
The odometer in my 1991 GMC Sierra 4×4 instrument cluster has died. It has oil, water, volts, fuel gage but no tach. I found a replacement cluster with tach. Are the wires neccesary to support the tach present in my harness or am I out of luck? Mike T.
Response:
Your truck doesn’t have a diesel engine does it? — Tim "BigGnome" Benware ‘01 Chevrolet S-10 ASE Master Certified Technician
– Hide quoted text — Show quoted text -> The odometer in my 1991 GMC Sierra 4×4 instrument cluster has died. It > has oil, water, volts, fuel gage but no tach. I found a replacement > cluster with tach. Are the wires neccesary to support the tach present > in my harness or am I out of luck? > Mike T.
Response:
It’s a 305 (gasoline) with automatic OD probably a 700R4. I was hoping GM was clever enough to use the same harness on tach and no-tach trucks so all I would need to do was plug in the cluster with a tach and be in bussiness. Mike T. – Hide quoted text — Show quoted text – > Your truck doesn’t have a diesel engine does it? > — > Tim "BigGnome" Benware > ‘01 Chevrolet S-10 > ASE Master Certified Technician > The odometer in my 1991 GMC Sierra 4×4 instrument cluster has died. It > has oil, water, volts, fuel gage but no tach. I found a replacement > cluster with tach. Are the wires neccesary to support the tach present > in my harness or am I out of luck? > Mike T.
