Two problems related to automatic transmission torque converter have been reported for the 1999 Chevrolet Blazer. The most recently reported issues are listed below.
I was driving down the road when the engine light came on. The Blazer began shifting from 1st gear to 2nd gear very hard. I experienced loss of power and had to shut the vehicle off in the middle of an intersection. A diagnostics test showed a p1870 code. I have had the problem checked by a mechanic, who states that my torque convertor and the clutches will need to be replaced, as well as a switch, to the cost of $2000. After reading numerous other complaints similar or identical in nature, I wonder if perhaps it is a manufacturer defect or design problem? one of the mecahnics I spoke with said that Chevrolet Blazers are notorious for this problem.
I have a 1999 chevy Blazer. . . The automatic transmission has a 1st - 2nd shift problem or defect after some highway driving on very warm or hot days. . . I nearly rear-ended another vehicle. . . Several transmission shops said it's a very common problem with my car or trans. . . Trouble code was 1870. . . Some want to replace torque converter, clutch, rebuild trans $$$. . . I heard that chevy is well aware of the problem and that a "shift kit update" would fix it. . . Do you have any info on this matter ?. . Thanks !.