ATC FUSE blows when Shifting into AWD 1998 Bravada - S-10 Forum
 
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post #1 of 4 Old 03-11-2006, 10:39 PM Thread Starter
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ATC FUSE blows when Shifting into AWD 1998 Bravada

The Fuse blows when the Transfer Case shift motor is told to shift.

If you drive on dry pavement the fuse does not blow. If you spin the rear wheels the fuse sometimes blow instantly or after one or two times. The fuse does not
blow when the Transfer Shift motor is unplugged.

The Transfer shift motor has been replaced and no short have been found in the
wiring.

Could the Relay on the Transfer case control module be shorting on load?

No Codes on the code reader to help.

Has anyone had this problem?


Last edited by jonsommer; 03-11-2006 at 10:44 PM.
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post #2 of 4 Old 03-21-2006, 12:20 PM
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Re: ATC FUSE blows when Shifting into AWD 1998 Bravada

Quote:
Originally Posted by jonsommer
The Fuse blows when the Transfer Case shift motor is told to shift.

If you drive on dry pavement the fuse does not blow. If you spin the rear wheels the fuse sometimes blow instantly or after one or two times. The fuse does not
blow when the Transfer Shift motor is unplugged.

The Transfer shift motor has been replaced and no short have been found in the
wiring.

Could the Relay on the Transfer case control module be shorting on load?

No Codes on the code reader to help.

Has anyone had this problem?
I have the same problem with my 98 bravada. I havent checked the shift motor yet, though. Anybody got any suggestions for us? It just snowed here today n i'm stranded b/c no 4 wheel drive
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post #3 of 4 Old 03-27-2006, 09:56 PM Thread Starter
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Re: ATC FUSE blows when Shifting into AWD 1998 Bravada

Wally


I will be replacing the Transfer case control module soon.

I'll let you know how it works
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post #4 of 4 Old 04-01-2006, 04:14 PM Thread Starter
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Re: ATC FUSE blows when Shifting into AWD 1998 Bravada

I replaced the Transfer Control Module today. all appears to be working.
I checked the tranasistor on the old control module it was shorted. I will be fixing the old Module for a spare. I just need to find the schematic for the Control Module (anyone out there that know were I can find a schematic for the control module circuit broad ).

Found the replacement module off ebay for about $15 it was from a 99 bravada

I do believe two things were wrong. The Transfer case shift motor was bad( shorting) and then the truck was driven for a long time with the bad motor. This in turn took out the Control Module.

Good luck solving your problem. If you need help reply to this post. I do have good electrical schematics of the transfer shift motor circuit (or you can get them at your local dealer).

Last edited by jonsommer; 04-01-2006 at 04:22 PM.
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