CHEVROLET TRANSMISSION NOT SHIFTING

1991 S10 With 4.3 And 700r4 Downshifts Unnecessarily While Cruising Down The Highway. Goes Back Up In A Heartbeat But Keeps Doing It...

Suv Will Not Downshift. I Had A Complete Tune Up Now Wont Downshift. The Mechanic Says It Is Not The Transmission Or Tcm Or Pcm. What Else...

The Van Was Parked About Four Years Ago Nothing Was Wrong Except It Needed Tires. Had To Put A Fuel Pump In It Got It Running Runs Great....

My Vehicle Has Recently Been Acting Up. I Need A Tune Up Due To A Multiple Misfire Code That I Know Of, But It Is Recently Been Not...

I've Been Wanting To Upgrade My Clutch For Some Time Now And I'm In The Process Of Choosing One With The Best Stock Pedal Feel, Max Hp...

After You Revive Yourself On The Subject Of How Many Miles Are On This Car, I'll Give You A Short History. This Car Has Been Well Taken...

I Have A 1988 Cavalier, That Had A Blown Engine. Got An Engine Out Of A 1989 Pontiac Grand Prix, And A Transmision From A 2001 Cavalier....

Recently Replaced Fuel Pump And Filter And It Ran Great After That 6 Months Later When I Try To Accelerate Like Im Merging Into Traffic...

91 Chevy Beretta W/automatic--works Ok For Approx 30 Mins Then It Locks Up To The Engine. Locks Up In High Gear And Will Not Down Shift.

Hello, When I Try And Start It Makes A Loud Squealing Noise To The Point It Won’t Stop Until I Switch Gears.