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Chevy Silverado and GMC Sierra General Operational Questions

66 messages,  Last post on Nov 18, 2009 at 8:02 PM

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#16 of 66 Lockable tailgate by flyspray May 25, 2007 (5:34 pm)
Im sorry to hear that the keyflop doesnt unlock the tailgate. I guess if I want it to work Im going to have to install a aftermarket remote unlock. I would also want it to unlock the bed lid... If I ever find a bed lid for the 07 NBS extended cab with the 8 ft bed. Im just hope I can find a keyflop that will work on both the doors and the aftermarket unlock devices.   gregC
#17 of 66 Ignition by chattlax2 Jul 13, 2007 (8:52 am)
I have a 1999 gmc sierra and I am having trouble getting the key to turn consistently..It usually works when I turn the wheel and it locks into position- but it takes a couple tries to get it to work, I am not sure if there is something mechanically wrong with it or if I'm just not starting it correctly? thanks Replies to this message: efunk_76 (Jul 11, 2008 10:16 pm) obyone (Jul 12, 2008 12:12 am)
#18 of 66 2007 Sierra 1500 SLE - Motor oil life/type by sgabel23 Sep 01, 2007 (4:14 am)
#19 of 66 2007 Sierra 1500 SLE - Motor oil life/type by sgabel23 Aug 24, 2007 (10:28 am)
I have a 2007 Sierra 1500 sle pick-up and I want to know what type of oil I should be running in this truck with the 5.3 iron block motor. The book says 5w30 but should I run synthetic or normal oil?   Also, My on-star tells me I'm do for my first oil change at 8,800 miles. I'm only at 3000 right now. Should I go by that? I've always changed my oil every 3000. Which should I go by? Thanks Replies to this message: bkerchak (Aug 24, 2007 1:06 pm) 2007denali (Aug 29, 2007 11:54 am) summerwind4 (Sep 01, 2007 4:14 am)
#20 of 66 Re: 2007 Sierra 1500 SLE - Motor oil life/type [sgabel23] by bkerchak Aug 24, 2007 (1:06 pm)
Replying to: sgabel23 (Aug 24, 2007 10:28 am) I have an 07 Silverado with 4.8 v-8 and was told at an orientation at my dealership that I should schedule an oil change only after the light/onstar tells me to....I asked about 3,000 mile change and I was told that if I wanted to waste my money they would take it....but again wait for the light/onstar.......as far as full synthetic I was told that it wouldn't be necessary since motor oil technology has been greatly improved....but If I wanted to run it I should wait to at least 5,000 miles to allow the engine to settle and for everything to get seated properly.....just what I was told at my dealership....I hope it is helpful Replies to this message: 2007denali (Aug 29, 2007 11:54 am)
#21 of 66 Re: 2007 Sierra 1500 SLE - Motor oil life/type [bkerchak] by 2007denali Aug 29, 2007 (11:54 am)
Replying to: bkerchak (Aug 24, 2007 1:06 pm) I own a 2007 Sierra Denali with the 6.2L engine. I currently have 2,000 miles on the engine. I plan on changing my oil for the first time at 3K miles with Mobil 1 Extended Performance. I agree with the wasting your money comment about 3K mile changes, but I would be nervous going past 5K miles on conventional oil. I've personally been sold on the Mobil 1 Extended Performance (Full Synthetic)that's guaranteed for 15,000 miles or one year. I change my own oil and I find that it saves me a lot of time and hassle.
#22 of 66 Re: 2007 Sierra 1500 SLE - Motor oil life/type [sgabel23] by summerwind4 Sep 01, 2007 (4:14 am)
Replying to: sgabel23 (Aug 24, 2007 10:28 am) my '00 rado with 5.3 is at 260,000 miles right now and does not burn oil............have run Mobil 1 since the second oil change. may do it on my GMT-900 with 5.3 as well.
#23 of 66 Just curious, what is this noise? by dhillger Oct 23, 2007 (6:40 am)
I drive a 2000 GMC Sierra 1500 with the 4.3L v6. Nothing is wrong with it but whenever I accelerate when it is cold, a fluidly sound comes from under the dash like water rushing through a big hose. It is probably normal but I was wondering what it was. Any explanation would put me at ease, thank you! Replies to this message: 1offroader (Oct 23, 2007 6:43 pm)
#24 of 66 Re: Just curious, what is this noise? [dhillger] by 1offroader Oct 23, 2007 (6:43 pm)
Replying to: dhillger (Oct 23, 2007 6:40 am) I had EXACTLY the same problem in a completely different vehicle - 2002 Nissan Altima. Turns out it was a very small leak in the radiator, and the system would not hold pressure. When the leak was fixed the noise went away. Not sure why such a small leak would cause such a big noise, but that's what it was. You might want to have the cooling system pressure tested for leaks.   1offroader
#25 of 66 No problems... by dhillger Oct 24, 2007 (7:11 am)
I checked the cooling system and everything is normal. Could it be the heater coil? Is the heater coil located under my dash somewhere?

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