Question about 1989 GMC Sierra
Thermostat sticking, waterpump going bad, leak in cooling system/low on coolant, or headgasket going bad.
Posted on Sep 01, 2010
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Posted on Jan 02, 2017
hi, i have seen this problem ten years ago twice, but i was dumbfounded by the answer. all details aside, I replaced the ecm, and never had the problem again with both of them. this repair was a recommended repair by the local truck depot in my town, they stated the ecm got hot along with the truck and it lost the injector sensor signal. now, don't take this solution and run with it, i haven't repaired a 6.2 diesel in ten years and i maybe off track completely. but at least maybe you could ask around your town or maybe a large truck facility about this. of course, you should take to a shop to have diagnosed. hope i could help.
Posted on Jun 07, 2010
Hey there.You can purchase a door pin and bushing repair kit to tighten up the hinge area,requires removing the door to replace.If the hinge area is worn to badly,the brass bushings willnot last.Also your window crank handle is held on by a C-clip behind the handle in between the plastic shim and the handle which requires a special tool to remove or a small screwdriver to get the clip off.It is hard to see.The shaft that the handle is on are known to wear also and if thats the case you will need to have the window regulator replaced.Hope this helps.John.
Posted on Mar 10, 2009
you'll have to find the wire that is hot when the brake pedal is pressed. hook the red wire from the module to this, the black wire will go to battery hot, the white will go to ground and the blue wire will go to the trailer connector for the rear electric brakes.
Posted on Mar 17, 2011
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