The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Gauges acting up when shifting to reverse 1990 c3500

Pampas56 · 03-18-2018, 03:36 PM

I'm no expert, but most of the instrument cluster problems seem to devolve to a grounding issue. If your cluster is not grounded well ANY input to the cluster tries to go to ground through the gauges.

My truck worked great during the day, but if I turned the headlights on or hit the turn signal the gauges went plum crazy.

Sometimes just pulling a new ground to the cluster solves it.

03-18-2018, 03:36 PM	#2
Pampas56 Registered User Join Date: Jul 2012 Location: Concrete, wa Posts: 61	Re: Gauges acting up when shifting to reverse 1990 c3500 I'm no expert, but most of the instrument cluster problems seem to devolve to a grounding issue. If your cluster is not grounded well ANY input to the cluster tries to go to ground through the gauges. My truck worked great during the day, but if I turned the headlights on or hit the turn signal the gauges went plum crazy. Sometimes just pulling a new ground to the cluster solves it. __________________ 1989 Silverado K2500ECLB- 307K miles with 90 K TBI 350-Not a show truck, a work tool that I can drive! 1998 Dakota EC 250K miles- I guess I'm just a truck guy now!