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GMC Sierra: Problems & Solutions - READ ONLY

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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#1440 of 1492 Loud Blower Motor by kimble989 Jun 21, 2006 (6:32 am)
Guys: My father has an 2000' model GMC Sierra with a 5.3L/V8 Vortec Engine. Nice truck with somewhere in the neighborhood of 35,000miles. Lately his blower motor is very loud when using the heater/ac/vent. I told him I would write on here and see if any one had any ideas of why this is. Just the blower motor going bad? or can something else cause this? Thanks guys, kimble989
#1441 of 1492 Re: HARMONIC VIBRATION 2002 GMC C/K1500 [geo9] by jf3761 Jun 21, 2006 (2:43 pm)
Replying to: geo9 (Jun 20, 2006 10:48 pm) Geo thanks for the advice I'll give it a try
#1442 of 1492 Correct placement for engine brackets by richmont Jun 22, 2006 (4:58 pm)
What is the correct placement for the alternator brackets on a 1989 GMC Sierra? I'm rebuilding my engine and can't figure out how to put the brackets on correctly. Any help (pictures especially) would be appreciated. Thanks, -Rich
#1443 of 1492 Re: Starting Problems [bigskyguy] by reyking Jul 01, 2006 (4:46 pm)
Replying to: bigskyguy (Jun 23, 2002 1:14 pm) sir i have a 3500 1999 chevy pick up and it is doing the exact thing your is if you figure it out let me know i replaced the fuel modulator the fuel pump and the mapp sensor and nothing has change now the are tell me to replace the fuel injector
#1444 of 1492 99 sierra 1500 transmission slipping? by jasminec Jul 03, 2006 (7:04 am)
Ok, this is a 99 v6 4x4 sierra 1500. The check engine light was on so it was taken to a garage and hooked up to the computer. They said that there was a bad o2 sensor and the computer said the transmission was slipping. We told them that it was surprising since there was nothing noticeable with the transmission. The garage then said to change the transmission (oh, this is an automatic transmission) fluid and filter. Then they would check the computer again. Well, now it noticeably slips.....badly. Even re did everything to make sure something wasn't loose or there was enough fluid. Everything looks fine, but the slipping is horrible. Any ideas? Not sure if anyone can really help but transmission work is so pricey. I'm sure we are gonna have to bite the bullet and spend a good bit of money but I wanted to see if any of you had any problems similar. Thanks to all in advance. J Replies to this message: gmctruck (Jul 03, 2006 7:29 pm)
#1445 of 1492 Re: 99 sierra 1500 transmission slipping? [jasminec] by gmctruck Jul 03, 2006 (7:29 pm)
Replying to: jasminec (Jul 03, 2006 7:04 am) How many miles are on the vehicle? What kind of transmission fluid did they use? They may have used the wrong type of fluid for your vehicle. Find out exactly what fluid they used and make sure it meets GM specs. Good luck!
#1446 of 1492 Re: Michelin Tires [shiftless] by gmctruck Jul 03, 2006 (7:53 pm)
Replying to: shiftless (May 22, 2006 5:22 pm) I don't know if you bought new tires yet, but check the door sticker on your truck to make sure they sell you the correct tire designed for your vehicle. I originally purchased the Michelin LTX M/S tires for my truck, but it felt like I was riding on under inflated balloons! The Michelins were "P" rated tires(35psi max), but my door sticker called out "LT" tires which are rated for 50psi. You can put "LT" rated tires on a "P" rated truck, but you can't put "P" rated tires on a truck with an "LT" rating. The tire shop failed to check the door label before installing the "P" rated tires on my truck. I called the Michelin support line and was told the tires had to come off my truck because it was not rated for "P" series tires. I now have the "LT" rated Bridgestone Revo's which seem to be decent tires so far. I have the 265's which are a bit smaller than the 285's.
#1447 of 1492 Weird Whine Front of Engine by jonnycanuk Jul 05, 2006 (10:57 am)
I have a 1999 GMC Sierra 5.3 l 4wd a/c etc.. Overall an excellent truck that I use for towing. The last year or so it has developed an intermittent whine from the front of the engine. Sounds like the water pump but that fix did not work. New belt did not work. Of course whenever I take it in for servicing the sound goes away. A/c or or off does not matter.   Anyone else have this problem? What was the fix?   Anyone tried to buy a PS hose for this vehicle? This aftermarket part does not exist up here in Canada...and GM wnats in the $300 range. (I have a very very small weep in the hose and that is the next repair that is planned) Replies to this message: gmctruck (Jul 06, 2006 5:59 pm)
#1448 of 1492 Rising Transmission Temperature by cgood1 Jul 05, 2006 (2:35 pm)
I have a 99 GMC 2500 4x4 w/6L vortec and the transmission temperature is running on the notch between 40 & 95, i'm just curious if that's normal or if there's a problem. I reciently changed the fluid and filter with no change to the temp. There's 145km on the truck. Can anyone tell me what their's runs at? Replies to this message: pathy58 (Jul 17, 2006 12:30 pm)
#1449 of 1492 Re: Weird Whine Front of Engine [jonnycanuk] by gmctruck Jul 06, 2006 (5:59 pm)
Replying to: jonnycanuk (Jul 05, 2006 10:57 am) Check the serpentine belt tensioner.... they do wear out over time. You can buy a cheap(>$5)stethoscope that works well tracking down noise sources like yours. Putting your ear next to a long crowbar or screwdriver also works, but not as good, and is a bit more dangerous. 8-)

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