1999 GMC Sierra Transmission and drivetrain Problems

“I complained to Gmc directly about ABS failure and reported it to atty. Gen of nys.I was told its normal wear in states with salt, funny that the paint is good to this day”

“While attempting a three point turn across a road the automatic transmission began grinding after putting the vechile in reverse. I was in the lane facing oncoming traffic when this occurred. The reverse gear no longer functioned. Fortunetly there was no oncoming traffic and I was able to put the vechile in drive and straighten it out, getting back to the parking lane. The vecile only has 49,000 miles. In the research I have done on the problem so far I have discovered that the automatic transmission failing is a common problem. …”

“Gas tank gauge works once in a while. Our mechanic said it was probably due to moisture. Also, the rear differential cover is either cracking or rusting through. I put a new gasket on it and the next day it was leaking again but not at the gasket. About 1/3 up from the bottom, you can see where fluid is leaking through the cover. I called 2 dealers (1 chevrolet, 1 Gmc). They both gave me numbers to other dealers (1 in pa., 1 in ia., 1 in upper mi.). The two out of state dealers told me that the part was for a customer and would not sell it. The one in mi. …”

“Today while trying to park my truck, I pulled into a parking spot and was going to back up, when I heard a whirring noise. I put the truck back in neutral,noise was gone, back in reverse noise has returned. No reverse. I abandoned parking and drove home. I had all forward gears. When I returned home, I put the truck in park..... No park the truck rolled ahead and almost hit another vehicle. Called Gmc, was told to take to dealer. Service manager said the problem was the reaction sun gear and shell internal in transmission. Very common problem. …”

“Dt: 1999 Gmc Sierra 1500. While driving the truck for about 45 minutes to an hour and if stopping at a stop sign or red light the truck will not shift from first gear to second gear properly. Once the truck does shift it is a very hard shift, and if on wet or slippery surfaces the truck will squall the tire. This started around 60, 000 miles. This does not happen every time, it is hit or miss. While pulling across three lanes of traffic the truck shifted properly and was almost hit by on coming cars. Took vehicle to the dealership, and they said it was the transmission. …”