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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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#4 of 1492 Other than changing the weatherstripping by obyone Nov 23, 2000 (8:32 am)
there isn't much the dealer can do. The door hinges are welded on so there is no possibility of adjusting the doors for a better fit. I guess GM wanted to save money on bolts. The solution is to break the welds, adjust the doors, and install bolts to replace welds. They have issued a TSB for the older C/K's on this but none for the newer silverado/sierras
#5 of 1492 Wind noise caused by bug deflector by woolyback2 Nov 25, 2000 (11:00 pm)
I installed a bug deflector on my 2000 1500 ExC SB Sierra and immediately noticed a loud rattling noise around the front window when I was doing around 55 mph. I had heard that some deflectors will cause the rubber weather stripping around the top of the windows to vibrate. I removed the deflector and noticed that the noise went away. I decided to exchange the deflector for a different brand and different style and tried it again. The results were better, it didn't get noisy until I was around 65 mph but the faster I went the noisier it got. I decided to put up with the noise for the time being as I am going to trade up to an 8.1 2500. Hope this might help others who are having a similar problem.
#6 of 1492 And how long will that be? by obyone Nov 25, 2000 (11:12 pm)
The Lund Interceptor has been used by Tahoe, Yukon, Sierra, and Silverado owners with no problems. For $50 you may want to try it, unless 1-you can live with the wind noise 2-you plan to trade soon Good luck!
#7 of 1492 And with your new 2500, by obyone Nov 25, 2000 (11:15 pm)
you may want to order a Lund Interceptor for it, hopefully Lund has one by then....
#8 of 1492 Sierra auto trans COLD shift problem. by pclar08 Nov 28, 2000 (10:54 pm)
Vehicle: 1999 GMC Sierra 1500, 4wd, ext cab, 5.3 l, 4.10 diffs(rear locking). Description: When transmission is cold (below 25 degrees)the 2-3 upshift does not occur until 32-33 mph. As the transmission warms, shifting becomes normal. Under light acceleration, approximate normal shift is: 1st-2nd: 10 mph; 2nd-3rd: 20 mph; OD: 35 mph. 33 mph in 2nd gear is 2500+/- rpm, way to fast for a cold engine (or transmission). This has been a problem since the first winter (99). Not a problem in warm weather but the cold has returned & it's the same as last winter. Transmission was serviced in Sept (flushed) w/approx 32K miles. My brother inlaw has a similar setup (4wd/5.3/3.73/sb)& has the same problem. His dealer said this was 'normal'. Any advice on this problem?
#9 of 1492 pclar80 by mblrds Nov 28, 2000 (11:26 pm)
I have roughly the same vehicle that you do, except mine's a 2000 Z71. The owners manual(2-23) says that when the temperature gets below 32 degrees, the transmission is designed to shift differently until the engine reaches normal operating temperature. Something about improving heater to performance. M.
#10 of 1492 Correct by vince4 Nov 29, 2000 (7:30 am)
This behavior is by design, it is not a problem even though it may be annoying.
#11 of 1492 Annoying to say the least. by pclar08 Nov 29, 2000 (1:03 pm)
This must be another 'better idea'. Oh, well. Other than that (and the other standard issues this series has had), this is one great truck: rides great, good fuel mileage, tows anything, goes anywhere. Thanks for the response!
#12 of 1492 by gonzo7 Dec 02, 2000 (12:08 am)
Toyotas "hold" the shift until warmed up too.
#13 of 1492 Some Other Sierra Problems by wxfcstr Dec 02, 2000 (3:45 pm)
I've got a 99 Sierra with a couple of annoying problems the dealership has totally ignored. Has anyone had: 1) A creaking or growning sound in the front end when making sharp turns?? This problem didn't start until I hit bout 20k. Everytime I back out of the drivewy, the front end lets loose a "somethings binding" type groan. The classic dealership diagnosis was "dirty PS fluid". 2) Erratic Fuel Level Mesurement?? Once again, not something that started until several thousand miles were logged. I can put gas in and get one reading. When I get home, it can be reading an 1/8th of tank different. Depending on gas sloshing in the tank, I've seen the gage needle travel a 1/4 tank back and forth. A low fuel gas slosh has occasionally set the "Low Fuel" light blinking off and on. The dealer response: The tech sat in 2 new Sierra's and noticed different gas level readings each time he started them, so there is no problem. End of diagnosis. Replies to this message: giant44s (Jul 25, 2005 8:22 am)

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