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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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#51 of 1492 Converter Lock-up by yellowdog27 Jan 14, 2001 (5:36 am)
Actually, that is when the converter is locked up. If I am cruising along around 50 mph or so, and I have to slow down into the 38-42 mph range, the transmission will not downshift itself. As I explained to the dealer, it's the same as having a manual transmission and driving it in 4th gear when you should be in 2nd or 3rd. The service techs at GM that the dealership contacted, told them that this is the way the truck is designed in order for them to meet EPA gas mileage requirements. They say that if I don't like what I am experiencing, that I should downshift it into third. I feel that they owe me the 800 dollars I paid for the automatic transmission if I indeed need to shift it. This is my third GMC in the past 12 years and with out a doubt the most troublesome. Makes me wonder if I will want another one in the future.                                      Brad
#52 of 1492 You could drive around in third as OD will not by obyone Jan 14, 2001 (6:19 am)
engage and no driveline growl. The dealer is correct in that there is no fix for this. They reprogrammed mine twice as there was another calibration update. It shifts into third a little sooner when depressing the gas when in OD at 38 mph. It is an improvement but not as much as I had hoped for. You can find the calibration update listed here:   http://calid.gm.com/vci/
#53 of 1492 Thanks for the wind noise infor by jlflemmons Jan 14, 2001 (4:33 pm)
on my truck it sounds like the drivers side is the bad one   Jim
#54 of 1492 Latest TSB for leaking quarter windows.... by obyone Jan 14, 2001 (5:41 pm)
99-08-48-001A. Seems like they may have done it already if one side doesn't leak.
#55 of 1492 '97 gmc tranny problem by brians5 Jan 14, 2001 (6:05 pm)
Hello there!   I have just experience a rather unusual occurrence with my 1997 GMC K2500. When pulling about a 3200lbs trailer down hill at about 55mph in 3rd gear, the tranny (four speed auto, coupled to the 454cid gas) came out of gear on its own and the tranny emitted grinding-gear sound, like the sound heard when putting a vehicle in park whilst still underway.   It did this three times. Each time I put it in neutral and the sound diminished immediately until going away. (Within seconds)   Any ideas?   -Brian
#56 of 1492 Couple of questions... by obyone Jan 14, 2001 (7:24 pm)
How many miles? and when was the last time you serviced the trans? Checked the fluid if it looks burnt?
#57 of 1492 Bouncing Long Bed by rrjung Jan 15, 2001 (8:58 am)
I have a 2000 Ex Cab (4dr) 1500 Long Bed, 5.3 and towing package. On certain freeways, the truck bounces (not vibrates) between roughly 65-74 mph. When I put a bed cover on, it reduced the bounce by almost 50%. The dealer wants me to carry 200 pounds of stuff in the bed (maybe he can sit there all the time). I tried Edelbrock shocks, but they didn't improve anything. I'm going to return them today (30 day money back guarantee). Early ABS activation has improved in time (I have about 10k miles on it now). The rear window defogger takes 15 minutes to work (instead of 3-5 like regular cars). Otherwise, love my truck. ANY IDEAS ???
#58 of 1492 Bouncy bounce by obyone Jan 15, 2001 (12:29 pm)
Why don't you try these:   http://velvet-ride.com/index.html
#59 of 1492 Are these certain freeways by obyone Jan 15, 2001 (12:29 pm)
made of concrete?
#60 of 1492 Creaking noise in dash/windshield by ot1sierra Jan 17, 2001 (9:37 am)
I have a 01 x-cab and at higher speeds sometimes I hear a noise as thought the windshield is rubbing against metal. I notice it in passenger side dash area. It isn't constant nor does it do it all the time, yet it is annoying. My rear doors don't shut in cold weather eaither but I have already read there may be a GM fix for that.

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