1995 gmc k1500

Asked by Aug 19, 2016 at 09:19 AM about the 1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab SB

Question type: Maintenance & Repair

My 1995 gmc k1500 stalls out in reverse if you get on it to
hard but only dose it when ac is on

1 Answer

26,525

Check the trans fluid level. You may also be experiencing a restriction in trans fluid which may be affecting the torque converter (dirty or loose filter, or restricted trans cooler for example). This in turn causes a hard shift which is enough to bog your engine down. (reverse just happens to be the earliest sign of this problem as it requires the highest level of trans line fluid pressure, eventually it will start to stall in other gears too). Then you have to address the stalling engine, which can have any number of causes - dirty throttle body, low fuel pressure, needs a tune up, restricted cat., etc. The AC is likely only adding an extra load to the engine when it is borderline to stalling.

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