I'm lost on this as where to look

Asked by Billysbolts Nov 17, 2019 at 07:53 PM about the 2003 GMC Sierra 1500 SLE 4WD Extended Cab LB

Question type: Maintenance & Repair

I've got an 03 gmc sierra club cab 4x4 5.3 auto
trans changed out trany worked fine about 20 miles
,lost speedo then gauges then info center 1st n 2nd
n reverse what's broke

2 Answers
41,240

TDolby answered 5 years ago

Did you install a new or used transmission? If new, I would use the warranty. A used one, it's a crap shoot.

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Billysbolts answered 5 years ago

2 new 3 used I have no tack ,no message center no gauges ,no cruise it showed 49 codes o2 sensers,ecu all 4 speed sencer low voltage all kinds of things but it starts all the lights blinkers

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