Adjustable column-shift linkage that ties a GM TH350, TH400, 700R4, 4L60, 4L60E or 4L80E to the steering-column shifter so the indicator matches the gear.
You swapped a 700R4, 4L60E or TH400 into a column-shift Chevy or GMC, and now the factory rod does not line up. The needle says Drive while the truck sits in Neutral, the starter only works when you jiggle the lever, or the column will not quite drop into Park. This adjustable column shift linkage kit, a replacement for ACA-1800, CB5010 and D292-SHLTH400, connects a GM-style column lever to the transmission manual shaft with a 21-inch stainless rod and a billet aluminum transmission arm, so you can set the geometry for your own chassis instead of bending an old rod until it almost works.
On a column-shift GM, turning the shift lever rotates a tube inside the column. An arm at the bottom of that tube pushes and pulls a rod, and the rod rotates the manual shaft on the left side of the transmission. Inside the case, that shaft moves the manual valve that sends oil to each range, and on a 4L60E it also turns the internal range switch that tells the computer which gear you selected and allows the engine to crank only in Park and Neutral. The rod is the only link between what the driver sees and what the valve body does, so a rod that is too long, too short or loose at either end puts the manual valve between detents.
A manual valve that sits partway between ranges can also feel like a soft engagement or a slip. Before you blame internal parts, read our 4L60E Silverado 1500 shift problems guide and rule out the linkage.
Disconnect the rod at the transmission end. Rotate the transmission arm by hand from Park through Low and count the detents; each one should click in clearly. Then work the column lever on its own and check that it reaches every gate. If both halves work but disagree when hooked together, the linkage is the problem. Measure from the column arm pivot to the transmission manual shaft with both in Park. If that run is longer than about 21 inches, you need the 26-inch TH400 column linkage kit instead. Small S10 and Sonoma trucks with a column shifter are covered in our 4L60E S10 shift problems guide.
The listing covers the manual shaft on the GM TH200, 200-4R, TH350, TH400, 700R4, 4L60, 4L60E and 4L80E, behind a GM factory or aftermarket column shifter. It is a swap and restoration part, not a model-year part, so the question is geometry: a column lever at the bottom of the column and a GM selector shaft on the case. It is not for Powerglide or for trucks with an electronic column or shift-by-wire. Some aftermarket column arms need their hole opened to 5/8 inch to accept the bushings. If you are unsure, send us the vehicle, the transmission and your measured distance. More parts for this unit are on our 4L60E parts page.
Moving to a floor shift instead? The 81120 side-grip ratchet shifter kit replaces the column linkage with a cable. Fluid is not affected by this job, but if the truck ran in a half-engaged range, check the ATF level and smell while you are under it.
| Replaces | ACA-1800, CB5010, D292-SHLTH400 |
| Fits | GM TH200, 200-4R, TH350, TH400, 700R4, 4L60, 4L60E, 4L80E |
| Rod | 21 in stainless steel, trim to fit |
| Mounting arm | Billet aluminum, reversible left/right |
| Application | Column shift, aftermarket or GM columns |
| Weight | 1.48 lb |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The rod is 21 inches and you cut it to fit. Measure from the column lever pivot to the transmission manual shaft with both in Park. If the run is longer than the rod, buy the 26-inch version instead.
Yes. The 4L60E manual shaft is on the listed coverage along with the TH350, TH400, 700R4, 200-4R and 4L80E, with a GM factory or aftermarket column.
The rod length is not set. Loosen the jam nuts and hex connector, line each column gate up with a transmission detent, and retighten. If it still cranks in gear with the linkage right, the 4L60E range switch on the case needs attention.
Only on some aftermarket columns. If the supplied bushings will not fit the arm hole, open it up to 5/8 inch.
Yes. The billet arm is reversible left or right, so you can set it up on whichever side clears your exhaust, frame and column arm.
