Three problems related to transmission failure have been reported for the 1998 Chevrolet Tahoe. The most recently reported issues are listed below.
Premature transmission failure @ 78,797 miles on 1998 Chevrolet, Tahoe.
Automatic transmission failed. Ecm code 1870 slippage. Valve body fails either by contamination or defect causing high line pressure causing hard 1-2gear shifts. Hard shifts cause internal damage and eminant failure. I've read hundreds of other similar failures that sound identical. This cannot be by accident. All transmissions are gm 4l60e.
I purchased my vehicle with 42,093 miles with the dealers additional coverage of 3,000 miles bringing the total coverage to 45. 093 miles on 06/25/2001 at 47,297 miles my vehicle started hesitating on the start after being stopped it was taken to the repair dealer meissner Chevrolet at 70th essington Ave phila PA where it was found to have code 1870 internal transmission failure it has to be replaced I'm very dissapointed about this I always wanted a chevy trunk and now I sincerely regret it.