Question about GMC Sierra
If i cycle the key several times sometimes it comes back on but then if i shift into 4 wheel drive the blower motor stops and the front axel doesnt engage
It sounds to me that you may have a bad ignition switch. not the one on the steering wheel but the electrical part under the dash on the steering column itself.. look under dash at the steering column and see if you see a bunch of wires plugged into a plug on the side of the steering column, if so check first to make sure it still plugged in completely if not you may need a new switch which is bolted to the column with a couple small bolts.. try that.
Posted on Feb 20, 2012
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Posted on Jan 02, 2017
Find the accuator on the front axle it has a two wire pigtail and threads into the axle housing. Check for power and ground if you have both when the transfer case is in 4x4 the replace the accuator. They are available at most parts stores and are a very common problem. Let me know how it goes.
Posted on Dec 16, 2008
your transmission has possibly been rebuilt with stronger springs put in. No worries. have been running mine for along while without any problems. Better this than slipping, but it is a bit annoying.
Posted on Jul 04, 2009
I have the full wiring harness for the exterior lights if you need it. Send me a email with a link to this posting and I will send you the diagram. email@example.com
Posted on Sep 18, 2009
VSS is still good if you have your cruise control and speedometer working, it's common for the wire harness to the solenoid on the passenger side to get corroded and or the sires to break due to the heat given off from the catalytic converter beside the transmission. Check the condition of the wire harness and clean the contacts with brake cleaner and reinstall with some grease to keep the corrosion away, hint use marine grease. Marine grease cost a few cents more but resist water longer and better then normal lutetium grease, I use it on everything and get longer life out of my u-joints and front end suspension. Most transmission shop will test drive free of charge and scan the truck for DTC codes that sometimes will not show up in the check engine light, but mostly you do have an electrical problem so check all your fuses and wire harness from the ECM to the transmission. Good luck and keep me posted, be glad to help you get your truck running 100% again soon without some transmission shop getting you to replace the whole transmission for $2,300. If you are going to have the transmission service, "fluid and filter changed" Have them replace your boost valve. The boost valve is around $45.00, the boost valve controls the amount of transmission fluid pressure and low transmission fluid pressure will cause the transmission to fail. I replace mine every second transmission service and i have over 365,000 miles on mine. Keep up the good work friend.
Posted on Dec 15, 2009
Testimonial: "Excellent information from the beginning.Thank you.I worked each of the connections I could locate and disc. the bat to clear the code. Good so far. "
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