The wiring diagram has a purple wire going directly from ignition to starter motor so im assuming it should be from pcm to starter motor. If your heaterac only works on high then this is the problem.
Ignition Wiring Issue 1988 1999 Chevrolet Amp Gmc C K Gmt400
Gmt400 wiring diagram. So all engine sensors o2. Gmt400 the ultimate 88 98 gm truck forum. Diy ac re charge eveready jul 7 2020 at 723 pm. The blower motor resistor is definitely on the passenger side behind the glove box. 1995 gmt400 blower motor wiring diagram. Wiring diagrams post all the relevant wiring diagrams you find for gmt400 trucks or gm engines.
Oem and custom interiors. If anyone has any information or pictures that could help id really appreciate it. I am taking apart the stock 1998 43l harness and stripping everything from it i dont want to use. At auto accessories garage we have all the top name brand accessories at rock bottom prices. Post all the relevant wiring diagrams you find for gmt400 trucks or gm engines. Click or call 8006631570 to learn more.
When the blower motor resistor fails on your gmc pickup or suv the blower motor will only work in one speed and in a few cases not at all. Log in or sign up. You should possess some knowledge of automotive wiring and some understanding of gm wiring. Want to get the full potential out of your gmt 400 truck. Forums interior audio electronics wiring diagrams post all the relevant wiring diagrams you find for gmt400 trucks or gm engines. 3429 discussions 37799 messages.
These are the pcm pinouts for the 1998 43l pcm. Other years 1996 2000 will be similar you will have to use your judgment.
Gallery of Gmt400 Wiring Diagram
