GM trucks equipped with Allison® 1000/2000/2400 transmissions often go into failsafe mode with codes P1711 or P0872 set in computer memory. This can be caused by bore wear at the E-shift valve, which allows the valve to hang up in the bore. Reconditioning the bore and installing Sonnax oversized E-shift valve kit 37000-15K restores normal operation by renewing critical clearances to allow smooth valve movement and the hardcoat anodized aluminum valve combats premature wear.

More From This Category

MANLEY Connecting Rod Pin Bushing, Bronze, .910 in. OD, .828 in. ID, .950 in. Length, Set of 4

MANLEY Connecting Rod Pin Bushing, Bronze, .910 in. OD, .828 in. ID, .950 in. Length, Set of 4

$91.14

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 27.25 in. Length, 31SPL, ForD BRONCO 1966–1975, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 27.25 in. Length, 31SPL, ForD BRONCO 1966–1975, Each

$244.78

Motive Gear Differential Master Bearing Kit, Timken, For CADILLAC ESCALADE 2009–2013, Kit

Motive Gear Differential Master Bearing Kit, Timken, For CADILLAC ESCALADE 2009–2013, Kit

$246.70

Motive Gear Differential Master Bearing Kit, Timken, For Ford EXCURSION 2000–2005, Kit

Motive Gear Differential Master Bearing Kit, Timken, For Ford EXCURSION 2000–2005, Kit

$509.41