1994 GMC sierra 1500 5.7v8. Sputtering in o/d

80

Asked by Sep 11, 2017 at 02:44 AM about the 1994 GMC Sierra 1500 C1500 SLE Extended Cab SB

Question type: Maintenance & Repair

I have a 1994 GMC sierra with the 5.7 v8. I recently
replaced the transmission and o have a issue
where the car with buck and/or sputter in over
drive when I apply the throttle at around 55-70 . I've
replaced : plugs, plug wires, cap and rotor, engine
coolant sensor, egr valve, tps, and fuel pump. With
the repairs it has gotten better but still acts up..did
Is there a ground wire for the transmission that I
miseed? Also the tranny shop said that no codes
are being given for the transmission. Plz help my
wallet is bleeding out trying to chase the problem

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