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Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado and GMC Sierra 4x4 Questions
110 messages, Last post on Oct 11, 2008 at 7:12 PM
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Replying to: boso56 (Dec 15, 2007 10:12 am) There are (2) actuators! The blinking light should go from blinking to solid, I assume that is what is happening? Did you reset the computer defalt after installing the new acturator? If not try that! (3) quick on and off turns of the ignition switch, then start it.
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Replying to: bruce48532 (Dec 15, 2007 10:29 am)
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I have a 2005 Silverado 1500 ext. cab with 36500 miles and after adding on to my 7 inch lift with a 3 inch body lift and new Radflo shocks all the way around, I started getting phantom warning lights lighting up like a Christmas tree. My abs, brake, security system lights go off randomly and my radio shuts off and turns back on. I also get the service 4 wheel drive and service brake system intermittently as well. Besides the 4wd Service light, has anyone experienced this and have a suggested fix? I've tried driving with an onboard computer to pull any DTC's but no I have had no luck, it says everything is working as expected and there is nothing to clear. I even tried unhooking the battery overnight hoping a truck ferry would come by and make all my troubles go away  As for the 4wd / AutoTrac I pulled the switch from the dash and did not see any cracks in the solder and hooked it up to a multimeter and all is good. Would it still be a good idea to buy the new switch? I hear the transfer case motor click but it does not engage and stays on 2wd. I am able to get it to go into auto and 4wd at times so I'm leaning towards the transfer case motor. Any other suggestions? I tried hitting it lightly with a hammer as possibly the motor could have been ceased. When it's in 4wd or auto it performs normally. I was going to go buy a new motor and replace it myself but if there are any other suggestions, i'd like to save myself the 533 bux and time doing it. GM keeps telling me it's a known issue and it's either the switch or the motor and quoted around 1500.00 for all the work and testing. WTF! And i'm now over 36000 miles and out of warranty.  If anyone has any suggestions, please let me know! Thanks! |
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Replying to: conclutcha (Dec 27, 2007 6:29 pm) http://stores.channeladvisor.com/Auto-Parts-Direct-To-You/GMC/Sierra%201500%2c25- 00%2c3500/ |
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Replying to: vinceblas (Dec 27, 2007 8:08 pm) http://stores.channeladvisor.com/Auto-Parts-Direct-To-You/GMC/Sierra%201500%2c25- - 00%2c3500/
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i have a 2001 1500hd and my 4x4 doesn't work i checked my hub actuator and it works (also bought a new one) and when i put it in 4x4 low the transfer case works and puts it into 2 low but the front wheels aren't grabbing. any ideas? thanks 
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Replying to: bruce48532 (Dec 28, 2007 8:01 am) |
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I just got my truck out of the shop at Chevy and after 2 days of looking at it including the switch and transfer case motor, they found that the main ground for my truck had a bad connection and was loose. They cleaned the corrosion around the ground and tightened it and all my problems were solved. I was almost to the point of getting a new transfer case motor and switch after the recommendation from Chevy, but since I had other intermittent phantom lights also going off, they called in the electrical technician to take a look. They found 44 DTC's that stated "unable to contact..." and that's how they traced the ground. Once they fixed the ground issues, my 4wheel drive and auto trac engage within 2 seconds and doesn't switch from 2wd to 4wd and vise versa. I was also over my miles and now out of warranty by 1200 miles (37,200) and was expecting to pay the 97.00/hr rate, but my service advisor talked to his manager and they covered it under warranty to troubleshoot and fix the root cause. GO LEE JOHNSON CHEVROLET, KIRKLAND WASHINGTON!! |
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Replying to: vinceblas (Dec 27, 2007 8:08 pm) The dealer told me it was most likely a bad connector in the instrument panel cluster or bad cluster its self. Not much help, sorry! Note - the last part I had replaced the (encoder motor) on the transfer case. I was told the transfer case was cracked near the selector shaft bearing. The bearing corroded causing the encoder motor to burn up. |
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Replying to: bruce48532 (Jan 04, 2008 10:03 am) Here's my recent post on my fix: I just got my truck out of the shop at Chevy and after 2 days of looking at it including the switch and transfer case motor, they found that the main ground for my truck had a bad connection and was loose. They cleaned the corrosion around the ground and tightened it and all my problems were solved. I was almost to the point of getting a new transfer case motor and switch after the recommendation from Chevy, but since I had other intermittent phantom lights also going off, they called in the electrical technician to take a look. They found 44 DTC's that stated "unable to contact..." and that's how they traced the ground. Once they fixed the ground issues, my 4wheel drive and auto trac engage within 2 seconds and doesn't switch from 2wd to 4wd and vise versa. I was also over my miles and now out of warranty by 1200 miles (37,200) and was expecting to pay the 97.00/hr rate, but my service advisor talked to his manager and they covered it under warranty to troubleshoot and fix the root cause. GO LEE JOHNSON CHEVROLET, KIRKLAND WASHINGTON!!
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