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You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Performance Mods, Exhaust, Truck
#81 of 169 Navigation system question about a 2008 GMC SIERRA 1500 SLT CREWCAB
Nov 21, 2007 (6:42 am)
I have two questions about naviagation systems in a 2008 GMC Sierra 1500 SLT Crew cab (WITHOUT rear seating entertainment . I would like to get the 2008 GMC stock navigation system in my new 2008 GMC Sierra SLT crewcab truck.
From GMC they cost around $2,700, but I found the actual nav systems cheaper ($1,400) on 3rd party GMC sites, and even found one for $900 on Ebay . On the 3rd party site & Ebay Its the exact 2008 gmc nav system (part numbers match).
I asked the GMC dealership if I purchased it from a GMC 3rd party, would they install it. They told me no and that I have to buy it from GMC directly.
And they also went on to say that there is an antenna (??) that has to be installed also, and that the nav system has to be programmed TO the truck (???)...I'm thinking this was a b.s. line to discourage me from buying it cheaper somwhere else.
Is this true?? Its there big programming process in installing a gmc nav system that ONLY GMC can perform when installing into a new gmc truck?!?!?! am i missing something here?? Is there something else invloved OUTSIDE of simply replacing the existing radio with a new nav system?!?!? Does the back up camera need to be installed also??Can anyone enlighten me here?
Also, pertaining to the gmc stock nav, can you change the view of the screen to show 3/4 view?? So far all ive seen of them is an overview shot, like looking at an actual map? The kind of hand held nav's u plug into the truck lighter, you can show a view at a 3/4 view shot like the view you have driving down the street. Can the GMC nav systems do this?!?! Or are you limited to JUST the over head shot?
Thanks for your time to read this, and any help will be greatly appreciated.
#82 of 169 Re: Lift Kits [builderbill]
Nov 22, 2007 (10:32 pm)
I don't think it's a lift kit you need to worry about unless you want your truck to look bad ass, if it's just the front end you want raised just take it to the dealer and have them adjust the torsion bar underneath and that will raise your front end for your desired ride height.
#83 of 169 Re: Navigation system question about a 2008 GMC SIERRA 1500 SLT CREWCAB [mherring]
Nov 23, 2007 (1:00 am)
So what your dealership is saying is that you need to buy the nav from GMC directly or actually any GM dealership and they will do the install?
There is a security system that is tied into the radio and I would believe that the ECU would probably have to be reprogrammed so that the truck knows the stock unit was replaced with the nav unit. Course depending on your relationship with the service manager it could be a minor charge to do the reprogramming.
Check out this site. They do charge a little high for the shipping buy their prices are very resaonable compared to my local Chevy and GMC dealerships sometimes saving me almost 50% on parts. Just enter the GM part number and it will return the description and price. If you buy the part from them your dealership should have no issues installing it.
#84 of 169 Re: Lift Kits [shadypop5]
Nov 26, 2007 (1:01 pm)
Thanks for the input Shady. That sounds a lot better than messing around with the lift kits. I wasn't aware they could make those kinds of adjustments.
#85 of 169 GMC lift kits
Nov 30, 2007 (4:22 pm)
Just so you all know if the dealer installs a lift kit before you buy the new vehicle, it voids the warranty through GM. This is just something that the dealer forgets to tell you if you have trouble with it. The dealer is making approximately $6500.00 profit by putting it on and then they don't want to fix anything on it. They shouldn't be able to put them on vehicles without having them re-inspected for safety.
#86 of 169 Re: Lift Kits [builderbill]
Dec 01, 2007 (11:51 am)
adjustments to raise front is fairly simple. look for long rods with octagon shape ends under bottom inside of tires(lower a arms i think). tighten bolts , paying attention to ammount of turns. keep turns equal to each side. headlights will be higher and piss me off if we crisscross at night so please dial them down after adjusting front up, thanks
#87 of 169 2500HD gas towing help
Dec 01, 2007 (12:13 pm)
I'm looking for a little more power for pulling my 5th wheel camper. I have an '04 silverado 2500HD gasser with 410 gears. I've added a K & N cold air intake and two flowmaster 40 series mufflers with no tailpipes. Mufflers are 2 1/2 in & out with narrowings at each end cut closer to match 3 inch pipes. Is a flowmaster 2 1/2 mufflers insides differant than that of 3 inch mufflers? Will tailpipes gain me more torque? Should I have purchased the HD muffler? Will an almost $300 chip help that much? If so what brand?
Truck does pull fairly well in 55 zones. Pulling in 70 zones is quite a bit tougher, especially in windy conditions with hills. Any suggestions will be greatly appreciated ! thanks.
#88 of 169 Re: 2500HD gas towing help [toperski]
Dec 01, 2007 (12:23 pm)
Forget the K&N and the flowmasters. Other than intake and exhaust sounds you will lose low end torque. A westerns tune may help. Do a google on it. Other than that most bolt ons are not worth the price in return on $ per HP.
#89 of 169 Re: Lift Kits [toperski]
Dec 02, 2007 (4:14 pm)
Thanks for the info and the reminder on the lights. Hadn't thought about those yet. Those dealers charging 6,500. on the lift kits are making way too much money on them. You can get a 12" lift installed at a off road shop around here for about 3,500., inlcuding everything else that needs to be changed out to work with it.
#90 of 169 Re: Navigation system question about a 2008 GMC SIERRA 1500 SLT CREWCAB [mherring]
Dec 03, 2007 (6:24 pm)
Alright truth is that the dealership you talked to is correct. There is an external antenna that needs to be installed as with any gps product. Also you do have to have the radio programmed in order to unlock it. The new radios built by denso have a data recognition of the VIN number stored in the radio and it will have to be programmed to work with the vehicle also the steering wheel controls have to programmed in order to function. The antenna for the gps is on the roof of the vehicle either painted to match or rough plastic. Vehicles with gps will have two of these on the new body style. One is the on-star/gps ant. the other is the xm ant. if so equipped. Now the only question here is, are the part numbers different between a vehicle with nav and without nav since on-star and nav are in the same ant. This I do not know. Where is the connection for the gps to hook in? I think you will have to pull the headliner most of the way down and replace the ant. for one with on-star and navigation.
Never really looked into this too much but I know alot about the new radio from the fact that I work at a customs shop and deal with hooking alot of things up to those new radios.