How do I remove and replace the the rack and pinion of the GMC Envoy?

no idea ,look at the thickness of the bolts and this will give you some idea ,if your really particular like some jaguar owners i know then put some contact adhesive on the threads then pinch them down with a rachet and then a jerk ,which should give you about 2 bar or 40lbs do not overtighten as this is worse than under tightnening ,if you snap a bolt ??

Along with removing a fuel tank-- that is a
nasty, difficult job-- you may want to pay a
shop to do

Why do you want to change the rack and plnion? The rack and pinion is designed to last the life of the vehicle. It is however possible that something does go wrong, and in this event a COMPETENT person should check it over. It is a safety risk. It seems the guy you took it to is NOT.

just tighten the bolt or change the copper washers first two of them.

Hi Gunny, If your vehicle is fitted with rack and pinion steering also check the rack ends for play. The rack ends are the rods which the tie rod ends screw onto. The other end fits onto the rack of the rack and pinion. To work on those you will need to remove the rubber boots and loosen the locking washer, they can then be loosened with a wrench. If they are worn the play will be evident in the steering. When replacing them also replace the rubber boots. If the boots are worn and road grime and dust enters, you will see leakage from the rack and pinion in the near future. I always thought the Dakota was fitted with a steering box? Regards John

Pump replacement is fairly involved, but the issue is rarely the pump, as it is pretty indestructable. If you have low pressure, usually some clearances are too loose, somewhere. There is also sending unit issues, so measure your pressure with an external "known good" gauge.

YOU HAVE TO SAFELY RAISE SUPPORT VECHICLE ON JACK STANDS.MAKE SURE YOU HAVE VECHICLE PARKED ON LEVEL SOLID GROUND.ONCE VECHICLE RAISED.REMOVE FRONT WHEELS.REMOVE TIE RODS END COTTER PINS AND CASTLE NUTS.REMOVE TIE ROD ENDS FROM THE KNUCKLES.REMOVE FRONT STABILIZER BAR.POSITION THE DASH OPENING WEATHER SEAL FOR THE STEERING COLUMN OUT OF THE WAY.REMOVE OR DISCONNECT THE FOLLOWING.REMOVE PINCH BOLT RETAINING THE STEERING COLUMN INTERMEDIATE SHAFT COUPLING.REMOVE STEERING GEAR RETAINING NUTS BOLTS.REMOVE REAR SUBFRAME BOLTS.USE WIRE TO SUPPORT EXHAUST COMPONENTS UNLESS YOU ARE REMOVING THEM COMPLETELY.SUPPORT THE EXHAUST SYSTEM FLEX TUBE AND REMOVE THE FLEX TUBE TO DUAL CONVERTER Y PIPE ATTACHMENT.LOWER THE VECHICLE SLIGHTLY UNTIL THE REAR SUBFRAME SEPARATES FROM THE BODY APPROXIMATELY 4 INCHES.REMOVE THE HEAT SHIELD BAND AND FOLD THE HEAT SHIELD DOWN.ROTATE THE RACK AND PINION ASSEMBLY TO CLEAR THE BOLTS FROM THE FRONT SUBFRAME AND PULL TOWARD THE DRIVERS SIDE OF THE VECHICLE.PLACE A DRAIN PAN UNDER THE VECHICLE AND DISCONNECT THE POWER STEERING LINES.REMOVE THE RACK AND PINION ASSEMBLY THROUGH THE DRIVERS SIDE OF THE VECHICLE***** TO INSTALL ****** INSTALL NEW TEFLON O - RINGS ON THE POWER STEERING LINE FITTINGS. PLACE THE RACK AND PINION RETAINING BOLTS IN THE GEAR HOUSING.INSTALL RACK AND PINION ASSEMBLY THROUGH THE DRIVERS SIDE OF THE VECHICLE.INSTALL POWER STEERING LINES ON THE RACK AND PINION ASSEMBLY. INSTALL RACK AND PINION ASSEMBLY ON THE SUBFRAME.INSTALL ******** HEAT SHIELD.INSTALL TIE ROD ENDS TO THE KNUCKLES TIGHTEN THE CASTLE NUTS AND INSTALL THE COTTER PINS.INSTALL STABILIZER BAR.INSTALL RACK AND PINION ASSEMBLY RETAINING BOLTS.TORQUE THEM TO 85 - 99 FT LBS. RAISE VECHICLE UNTIL SUBFRAME CONTACTS THE BODY.INSTALL REAR SUBFRAME RETAINING BOLTS TORQUE THEM TO 83 - 112 FT LBS.INSTALL EXHAUST SYSTEM FLEX TUBE TO DUAL CONVERTER Y PIPE.INSTALL FRONT WHEELS.INSTALL A NEW PINCH BOLT IN THE STEERING COLUMN INTERMEDIATE SHAFT COUPLING ON THE RACK INPUT SHAFT TORQUE PINCH BOLT TO 25 - 33 FT LBS.POSITION THE STEERING COLUMN OPENING WEATHER SEAL OVER THE STEERING GEAR HOUSING.LOWER THE VECHICLE FILL THE POWER STEERING FLUID RESERVOIR. START THE VECHICLE AND CHECK FOR LEAKS. CHECK FOR PROPER WHEEL ALIGNMENT AND STEERING WHEEL POSITION.BLEED POWER STEERING SYSTEM.

you have a sticking valve in the rack & pinion stearing replace rack & pinion assembly

Removing the rack and pinion assembly from a 2002 Pontiac Grand Am Se To get the old rack and pinion off of the car for replacement involves lowering the sub-frame, removing the stabilizer bar, and pulling the rack out from the driver side of the vehicle.

• Start by lifting or jacking up the car and removing the front wheels. Once the car is safely supported, disconnect both tie rods from the steering knuckles.
• The rear motor mount sits on top of the cross-member part of the sub-frame, and must be disconnected to allow the sub-frame to drop a few inches. Remove the three bolts attaching it to the center of the sub-frame - one in the back and two in the front near the back of the transmission.
• Loosen the two bolts holding the front of the sub-frame. Place a scissor jack or bottle jack under the rear of the sub-frame where the bolt for the motor mount was. Remove the two smaller bolts from each side of the rear of the sub-frame (total 4 bolts) and then loosen the two remaining larger bolts holding the rear of the sub-frame (these bolts go through the rear control arm bushings and are very long) until the bolts are only going through the control arm bushing, and not into the chassis. You do not need to remove these completely.
• Remove the stabilizer links from both sides.
• Next you must disconnect the steering linkage. This is done easily by lifting up the rubber boot to expose the small bolt holding the linkage. Remove the bolt and pry the linkage upward using a pry tool or screw driver.
• Near the passenger side of the crossmember, remove the bolt holding the power steering line bracket to the chassis. You may now begin to lower the sub-frame using the jack. The front bolts should have lowered the sub-frame about a half-inch or so, allowing you to lower the back of the sub-frame 3 or 4 inches.
• With the sub-frame lowered, you can now access the bolts holding the stabilizer bar in place. The right side has a nut screwed onto the top of it holding the power steering lines, remove this first, then remove both bolts. Pry or pull the stabilizer brackets up and out. Remove the stabilizer bar.
• Now you can get to both of the bolts holding the rack in place. Remove both of these, then begin to slide the rack toward the driver side wheel well until there is no more slack in the power steering lines. At this point you should be able to get to the nuts securing the lines on the rack. Loosen both nuts and be ready with something to cap the ends with. I used part of a plastic bag and a wire to tie it. You can now pull the rack out through the driver side.
• Be sure to replace the rubber o-rings on the ends of the lines when putting the new rack in. Replace everything in the reverse order. Put your tie rods on the new rack, making sure to count the turns or make a mark or measure to be sure your tie rods end up close to the same length as before.
• Bleed the power steering system.

Important: Get an alignment! Not only is it dangerous to drive with your steering out of align but it will also grate the tread off your tires in a matter of weeks or even days.

quit hitting pot holes and speed bumps so hard have the ball joints checked