SOURCE: Tail light problems on 1996 GMC Sierra pickup
I had similar problem with my 97 sierra... I only lost 1 light, then brake lights stayed on all the time... turns out the "t" connector for the trailer harness under rear bumper was rotted inside...unplugged the 2 parts of the harness and pluged them into each other with out the "T" harness.... everything works great... Hope it helps ya
SOURCE: Misfires 96 gmc sierra 5.0
I suggest you have the injectors tested by the dealer, the sludge buildup will not cause a miss fire. to clean the throttle body use carberator spray while holding the engine idle high.
SOURCE: Where can I find the diagram for a 1992 GMC Sierra
The GMC 1500 Sierra have several engine sizes, hope this helped...
1992 GMC C 1500 P/U 2WD 4.3 liter V-6 VIN "Z"
1992 GMC C 1500 P/U 2WD 5.0 liter V-8 VIN "H"
1992 GMC C 1500 P/U 2WD 5.7 liter V-8 VIN "K"
Good luck, and remember rated this. TY for using Fixya.
SOURCE: 1996 GMC Sierra 1500 XC 4x4 5.7 Hard To Start
It is probably the fuel pump. If I remember the number correctly, this fuel system needs about 50 lbs to open a valve.
Until this valve opens, no fuel gets to the fuel nozzels.
SOURCE: How to remove and replace the blower motor on a
If you look under pasenger side dash at floor board you will see blower housing. unbolt it and you may have to remove one dash bolt at bottom pry dash out a little and remove motor
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1994 4.3
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