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1492 messages,  Last post on Oct 12, 2006 at 5:32 AM

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What is this discussion about? GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck

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#1244 of 1492 Re: Hard Shifting [jgmilberg] by tractor1 Nov 18, 2005 (3:01 pm)
Replying to: jgmilberg (Jan 02, 2005 9:18 pm) Sounds like you might be able to help me out with my problem..I have a 2005 Sierra 1500 with limited slip rear-end. When purchased the salesman said service rear end at 10,000 mi. (new lube, new fluid, etc.) When I called to set up the appointment the service manager said it should be done every 12,000 mis.I checked my service manual and there is no guideline. What is your opinion or can you tell me where I can find out? Replies to this message: skeptic1 (Dec 02, 2005 8:29 am)
#1245 of 1492 GMC Sierra 2500 Diesel tank switch? by gmcdieseldude Nov 18, 2005 (10:18 pm)
Hey, i have a GMC Sierra 2500 Diesel with the optional auxiliary fuel tank. I was told the truck drew from both of the tanks equally, due to the absence of a tank switch that I could find. I filled one of the tanks with 10 gallons of fuel and the gauge went from 1/4 to 3/4, indicating that it was only reading off of one tank. So, my question is, is there a tank switch? If so, where is it? And if there's not, what do you suppose is up?
#1246 of 1492 2003 GMC Sierra Dash Light by norcal2314 Nov 21, 2005 (11:08 am)
I was just curious if any one here knew what this light meant. It popped on yesterday when we were driving home and went out but i couldnt find anything about it in the owners manual, I found every other light meaning except the one i was looking for. it shows it on the diagram, but theres no explanation. It is on the left hand side, the second light from the bottom (its on the row with the check engine light). We kept calling it the loopty loop light. kind of embarassing.... but if any one knows what it means please help! We have also been noticing the truck "kicking" a lot when it gets going from a light or anything, also when trying to reverse it sometimes feels like it is in neutral. we are gettting these things looked at, just curious if anyone else has had that same problem. Replies to this message: lt16spdss (Nov 30, 2005 9:06 am) 12run4 (Dec 17, 2005 11:03 pm) vp46 (Mar 11, 2006 4:23 pm)
#1247 of 1492 Re: 03 hd fuel filter problem [nofearmx] by gillespie Nov 22, 2005 (1:28 am)
Replying to: nofearmx (Nov 17, 2005 1:20 pm) I have an 01 Duramax which just turned 73K and I just started having the same problem. I replaced the fuel filter and one week later I took it into the shop and they told me the filter was clogged. They said I was pulling 5" of vacuum at the filter and it should only be about 2.5". Before they accomplished the recall (one time change of filter), I decided to pull the tank and check for contamination. I did find some contamination and some water in the diesel. Had the new filter installed and after two tanks of fuel the same problem came back. Usually if I just drain the fuel from the filter, and re prime it, the engine usually starts right up and runs fine. In my case, I noticed the problem usually happens when the truck has been setting for a short time (i.e. at a restaurant, at work, overnight in the driveway, etc.). It will start after setting, run for about 30 seconds and then quit. The only way I can get it re started, is to drain the filter and reprime it. Were you able to get any help on yours?
#1248 of 1492 '04 Sierra 1500: Exhaust mods require engine tuning? by nicholasaboe Nov 22, 2005 (5:34 am)
I recently replaced my factory exhaust with a flowmaster kit. Since the installation, the truck sounds great, but the computer seems to be a bit confused. It idles high at times, and doesn't seem to change gears the same. Does the modification of factory exhaust require any kind of engine tuning or adjustments to the computer? I've heard that disconnecting the battery will help the computer "relearn" everything. Any help would be great. Replies to this message: obyone (Nov 22, 2005 9:32 am) nicholasaboe (Nov 22, 2005 5:38 pm) obyone (Nov 23, 2005 5:35 am)
#1249 of 1492 Re: '04 Sierra 1500: Exhaust mods require engine tuning? [nicholasaboe] by obyone Nov 22, 2005 (9:32 am)
Replying to: nicholasaboe (Nov 22, 2005 5:34 am) Did you disconnect the battery?   After doing so see how it responds. Replies to this message: nicholasaboe (Nov 22, 2005 5:38 pm) obyone (Nov 23, 2005 5:35 am)
#1250 of 1492 Re: '04 Sierra 1500: Exhaust mods require engine tuning? [obyone] by nicholasaboe Nov 22, 2005 (5:38 pm)
Replying to: obyone (Nov 22, 2005 9:32 am) disconnecting the battery worked out great. Drives and sounds perfect now. What did disconnecting the battery do for me? Replies to this message: obyone (Nov 23, 2005 5:35 am)
#1251 of 1492 Re: '04 Sierra 1500: Exhaust mods require engine tuning? [nicholasaboe] by obyone Nov 23, 2005 (5:35 am)
Replying to: nicholasaboe (Nov 22, 2005 5:38 pm) Glad it worked for you. Besides wiping out your radio settings and clock, also wipes out whatever data is stored on the truck...sorta like rebooting.
#1252 of 1492 Windshield Washer Pump by golftommy2 Nov 23, 2005 (6:10 am)
I have a 2004 GMC Sierra, recently the windshield washer fluid hasnt been coming out, i can hear the pump running but nothing coming out, then sometimes the pump doesnt work, then other times it does work and still nothing coming out. Does anyone know what this might be? Thanks Replies to this message: obyone (Nov 23, 2005 1:15 pm)
#1253 of 1492 Re: Windshield Washer Pump [golftommy2] by obyone Nov 23, 2005 (1:15 pm)
Replying to: golftommy2 (Nov 23, 2005 6:10 am) sounds like:   -out of fluid or -leak in line or -leak in pump or -any combination of the above   also using the pump when there is no fluid may lead to premature pump failure.

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