1996 GMC C3500 AMP GAUGE/TACK

1996 GMC C3500
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PAULKUNZE
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  • 1 POST
Electrical problem
1996 GMC C3500 V8 Two Wheel Drive Manual

AMP AND TAC GAUGES NOT WORKING
AMP STONE COLD DEAD BUT ALT CHARGES ( HAD IT CHECKED AT A ALT SHOP)
ONE WIRE TO ALT REG ON BACK
TAC DEAD
COULD THIS BE THE SPEED SINSER
Dec 1, 2009 at 12:49 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Gas or Diesel?
This is for Gas:
TACHOMETER TEST Tachometer Does Not Function 1. Disconnect IPC connector. Disconnect ignition coil connector. Connect self-powered test light between IPC printed circuit connector terminal No. 6 (White wire) and ground. If test light does not come on, go to next step. If test light does come on, repair short to ground in White wire. 2. Connect test light between IPC connector terminal No. 6 (White wire) and ignition coil connector terminal "B" (White wire). If test light comes on, replace IPC. If test light does not come on, repair open circuit in White wire. NOTE: Before performing following test, ensure Distributor Ignition (DI) system is operating correctly.
VOLTMETER Voltmeter Inaccurate Turn ignition on. Connect voltmeter between positive and negative battery terminals. If voltage reading is about the same as vehicle's voltmeter, voltmeter is okay. If voltage reading is different from vehicle's voltmeter, check gauge circuit. If circuit is okay, replace voltmeter.
Dec 9, 2009 at 2:26 PM
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