gmc envoy exhaust system diagram

You search PDF repair manual about gmc envoy exhaust system diagram, if there are search results will appear below. If search results do not exist, please search by others keyword.



  gmc envoy exhaust system diagram Direct Download speed 5432 Kb/s

  gmc envoy exhaust system diagram Full Version speed 8172 Kb/s



1996-2000 Chevrolet And GMC Suburban/ Pick-Up 2500/ 3500 Series TUBULAR EXHAUST SYSTEM INSTALLATION INSTRUCTION

0

Filed Under (Chevrolet Manuals) by admin on 29-12-2011

download
Disassembly – Left Side 1. Disconnect negative cable from battery. 2. Use penetrating oil on all nuts and bolts to be removed. This will prevent the possibility of broken or stripped nuts and bolts. 3. Remove air cleaner system (note position of line and hose connections). 4. Disconnect spark plug wires. 5. Disconnect temperature sensor wire. 6. Remove EGR fitting. 7. Remove bolts and exhaust manifold. Disassembly – Right Side 1. Remove air cleaner box. 2. Disconnect spark plug wires. 3. Remove dipstick and dipstick tube. 4. Remove bolts and exhaust manifold. 5. Clean exhaust flange surfaces on both cylinder heads at this time. DISASSEMBLY – CROSSOVER PIPE 1. Raise vehicle and support with jackstands. 2. Disconnect and remove 02 sensors (2), being careful not to rupture or destroy the unit. WARNING: Do not clean this unit in any cleaning solvent and do not damage wire. 3. Between left and right side of the catalytic converter is a 3-bolt flange with gasket. From the front face of flange, measure out 15″ towards front of truck and cut stock exhaust pipes. Remove exhaust pipes from vehicle. NOTE: Before cutting pipes, measure the height of the converter from the bottom of the floor board for when you install new exhaust pipes you can maintain same distance. •ASSEMBLY – LEFT SIDE 1. Install T.E.S. flange gasket and one 3/8″-16 x 1″ bolt, lock washer, and thick flat washer at rearmost bolt hole (leave bolt loose enough to accept T.E.S.). 2. Install left side T.E.S. manifold from bottom side 3. Install all bolts and washers and tighten. Use thick flat washers on slotted holes. 4. Reinstall spark plugs. 5. Replace original equipment spark plug ends on cylinders #3 and #5 with 60° connectors and boots provided in kit. 6. Re-connect spark plug wires on left side. 7. Re-install temperature sensor wire to temperature sensor. ASSEMBLY – RIGHT SIDE 1. Install T.E.S. flange gasket and one 3/8″-16 x 1″ bolt, lock washer and thick flat washers at rearmost bolt hole (leave bolt loose enough to accept T.E.S.). 2. Install right side T.E.S. manifold from top side. Now install dipstick tube. 3. Install remaining bolts and lock washers. 4. Align all parts and tighten all right side bolts at this time. 5. Replace original equipment spark plug ends on cylinders #4, #6 and #8 with 60° connectors and boots provided in kit. 6. Re-connect right side spark plug wires. 7. To prevent contact with the hot T.E.S. tubing, use nylon tie wrap (supplied) to secure the heater hose to the a.c. dryer. 8. Re-install air cleaner box. CROSSOVER PIPE ASSEMBLY 1. With catalytic converters in their natural position, install and bolt exhaust extension pipes to header collectors using 3/8″ – 16″ x 2 1/2″ hex bolts, 3/8″ flat washers, 3/8″ lock washers and 3/8 hex nuts. Use the 3″ donut provided in kit. 2. Check alignment of pipes to the catalytic converter, secure bolts. 3. With everything in place, tack weld exhaust pipes to catalytic assembly. 4. Unbolt whole exhaust assembly from vehicle and let it hang. Complete weld around pipes. 5. Bolt assembly back in vehicle and check for clearance. 6. Re-install 02 sensors. Use anti-seize on threads of sensor. Route wires clear of exhaust system. 7. Lower vehicle to ground

Related Content:

2005 taurus exhaust system diagram, 2 2 s10 exhaust flange bolts, diagram of an exhaust system on a 2003 gmc envoy, Diagram of a exhaust crossover pipe for a 95 Oldsmobile aurora, 04 pacifica parts diagram, pontiac sunfire gt exhaust system diagram, how tight should exhaust, gmc yukon exhaust manifold diagram, 454 exhaust donut installation, 2006 corvette mid pipe flange torque

2007-2009 Toyota FJ Cruiser Banks Monster Exhaust System Installation Manual

0

Filed Under (Toyota Manuals) by admin on 06-04-2012

download
1. Before starting work, familiarize yourself with the installation procedure by reading all of the instructions. 2. The exploded view (Figure 2) provides only general guidance. Refer to each step and section diagram in this manual for proper instruction. 3. Throughout this manual, the left side of the vehicle refers to the driver’s side, and the right side to the passenger’s side. 4. Disconnect the negative (ground) cable from the battery (or batteries, if there are two) before beginning work. 5. Route and tie wires and hoses a minimum of 6″ away from exhaust heat, moving parts and sharp edges. clearance of 8″ or more is recommended where possible. 6. When raising the vehicle, support it on properly weight-rated safety stands, ramps or a commercial hoist. Follow the manufacturer’s safety precautions. Take care to balance the vehicle to prevent it from slipping or falling. When using ramps, be sure the front wheels are centered squarely on the topsides; put the transmission in park; set the hand brake; and place blocks behind the rear wheels. Caution! Do not use floor jacks to support the vehicle while working under it. Do not raise the vehicle onto concrete blocks, masonry or any other item not intended specifically for this use. 7. During installation, keep the work area clean. Do not allow anything to be dropped into intake, exhaust, or lubrication system components while performing the installation, as foreign objects will cause immediate engine damage upon start-up. Tools Required: • 1? 2 ” and 3? 8 ” drive ratchets with standard and metric sockets and 1 ? 2 ” and 3? 8 ” drive extension • Standard and metric combination or open-end wrenches • Standard screwdriver • Clean shop towels or rags • Pry-bar Highly recommended tools and supplies: • Foot-pound torque wrench • Penetrating oil or light lubricant spray General Installation Practices 97083 v.2.0 3 Monster Exhaust SySTEM INSTallaTIoN 1. Disconnect the negative (ground) cable from the battery (if there is more than one battery, disconnect both negative cables). Secure the cable so it cannot accidentally come in contact with the post. 2. Raise the vehicle and support it securely with properly weight-rated safety stands, ramps or a commercial hoist. Take care to balance the vehicle to prevent it from slipping or falling. When using ramps, be sure the wheels are centered squarely on the topsides. Place the transmission in park (automatic), set the parking brake and securely block the wheels that are on the ground. CaUTIoN: Do NoT WoRK UNDER aNy VEHIClE SUPPoRTED oNly By a JaCK. SEVERE INJURy May RESUlT. 3. From under the vehicle remove the factory exhaust starting at the 2-bolt flange in front of the muffler. Remove the two (2) bolts, two (2) washers, and two (2) springs from the flange and retain for re-use. NOTE: Remove the factory gasket from the 2-bolt flange. The exhaust system will be hanging by the exhaust hanger pins. 4. Liberally apply an aerosol lubricant on all the hanger pins. Remove the exhaust system from the vehicle by removing each hanger pin from the rubber grommet. NOTE: Remove hanger pins from the front of the vehicle to the rear. 5. Drop the exhaust system to the floor and move out of the way. You will not be reusing any components from the exhaust system. 6. Install the Banks conical gasket onto the vehicle’s 2-bolt flange. 7. Install the hanger pin on the intermediate pipe into the corresponding rubber grommet. Install the Banks intermediate pipe onto the factory 2-bolt intermediate pipe outlet using the factory hardware. See Figure 1. When tightening the

Related Content:

bosch vp44 service manual, show me a picture of the diagram of an exhaust system of a Toyota matrix, Torque Wrench Instruction Manual, Toyota Exhaust Parts Diagram

1996 Ford Truck E 350 Exhaust Manifold – Exhaust Leaks Service Manual

0

Filed Under (Ford Manuals) by admin on 08-02-2012

download
SERVICE PROCEDURE NOTE IF THE MANIFOLD IS TO BE RESURFACED, THE BOLTS MUST BE SHORTENED TO ACCOMMODATE THE EXHAUST MANIFOLD . THE BOLTS SHOULD HAVE THE LEADING “DOG POINT” REMOVED TO PREVENT BOTTOMING INTO THE HOLE. NOTE THERE SHOULD NOT BE ANY TYPE OF GASKET USED BETWEEN THE EXHAUST MANIFOLD AND THE CYLINDER HEAD. Parts Block OTHER APPLICABLE ARTICLES: NONE SUPERSEDES: 97-26-23 WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper 1. If an exhaust leak exists at the exhaust manifold due to a reduction in bolt torque, remove the manifold bolts and the exhaust manifold and check the overall flatness of the manifold. The manifold should not exceed 0.25 mm (0.010″) out- of-flat. Refer to the appropriate model/year Service Manual for manifold removal procedures. 2. If the vehicle is covered under the emissions warranty period, replace the manifold if it is out-of-flat. If the vehicle is out of the emissions warranty period, resurface the exhaust manifold 3. Install the manifold using new mounting hardware, but DO NOT USE WASHERS TO INSTALL THE MANIFOLD. Torque the bolts to 34-47 N.m (25- 35 lb-ft). 4. Check all exhaust system fittings loosened during repair for adequate tightness and allow engine to warm up. Recheck exhaust system for leaks and repair as required.

Related Content:

ford 5 4L water jacket leak spark plug hole intake gasket, 2001 ford excursion water leak on back of motor, metal mesh hanging loose under escort zx2, volvo d12 exhaust manifold bolt torque, replace a front exhaust manifold 2004 ford escape 24 valve, isuzu npr 5 7 water pump bolt torque, schematic of a 2005 chrysler exhaust system, volvo penta 125 exhaust manifold bolt torques, what parts are required to replace the exhaust from the manifold on back for a 1990 ford f150, intake manifold leak sound

2003 Chevrolet Chevy K Silverado Exhaust Popping/Snapping Noise When Vehicle is Hot, at Idle, or Immediately After Vehicle is Shut Off (Replace Muffler Heat Shield) Service Manual

0

Filed Under (Chevrolet Manuals) by admin on 09-02-2012

download
Follow the service procedure below to correct this condition. Important: Some popping/snapping noise from the exhaust system during cool down is a normal condition. The customer should be made aware that this service procedure is designed to reduce but not eliminate all exhaust system popping and snapping during cool down. 1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. Caution: 2. Remove the nuts securing the muffler to the catalytic converter. 3. On 6.0L and 8.1L equipped vehicles only, loosen the exhaust pipe clamp. Important: Do not use oil base lubricants on the rubber exhaust hangers. 4. Apply a soapy solution to the exhaust pipe hanger rods in order to ease the removal of the exhaust hangers. 5. Pry the exhaust hangers free from the exhaust pipe hanger rods. Important: It is not necessary to remove the muffler from the vehicle to replace the muffler heat shield. 6. Reposition the muffler to gain access to the muffler heat shield 7. Using an air-powered hack saw blade, or equivalent, cut off the existing muffler heat shield just as the heat shield rises off of the muffler. See the illustration above. 8. Remove the heat shield from the muffler. 9. Hammer flush the remaining heat shield to the muffler. Important: 10. Install the new heat shield (see parts list below) onto the muffler as shown above.

Related Content:

1997 sugar sand heat repair manual, 2003 chevy silverado repair manual, exhaust heat shield 2002 4runner, FIESTA CATALYTIC HEAT SHIELD REMOVING, fuel tank heat shield 2009 f-150 owners manual, removing heat shields 2004 ford f150, toyota corolla 2007 shield bolts

2007 HONDA PILOT EXHAUST PIPE FINISHERS INSTALLATION INSTRUCTIONS

0

Filed Under (Honda Manuals) by admin on 06-10-2011

download
TOOLS REQUIRED 10 mm Socket Torque wrench Rubber mallet 2 Exhaust pipe finishers 3. While pushing the exhaust pipe finisher firmly against the exhaust pipe, tighten the flange bolt. Torque the flange bolt to 10 N·m (7lbs-ft.). Repeat for the second exhaust pipe finisher. 2. With the flange bolts facing down, slide the exhaust pipe finishers onto the exhaust pipes until they bottom. If necessary, use a rubber mallet to tap the exhaust pipe finishers into place. 4. Start the engine and rev it up a few times. Listen for vibration from the exhaust pipe finishers and adjust if necessary.

Related Content:

honda pilot exhaust system diagram

Toyota Tundra Exhaust System Installation

0

Filed Under (Toyota Manuals) by admin on 27-09-2011

download
Original Exhaust System Removal Note: With a used vehicle, we suggest a penetrating spray lubricant to be applied liberally to all exhaust fasteners and allowing a significant period of time for the chemical to lubricate the threads before attempting to disassemble. 1. For an easier time during the removal of the factory exhaust and for the installation of your new exhaust system, remove the spare tire as recommended by vehicle manual. 2. Loosen the clamp located just behind the muffler assembly. (See figure 1) 3. Lubricate all the hangers and rubber isolators. 4. Using a muffler stand or an additional person to hold the tail pipe assembly in position, remove the hangers from the rubber isolators and remove the tail pipe assembly from the ve- hicle. 5. Unbolt the two flanges located just after each catalytic converter. Place the hardware to the side for use during the installation of your new exhaust system. (See figure 2A and 2B) 6. Using a muffler stand or an additional person to hold the muffler assembly in position, remove the hangers from the rubber isolators and remove the remaining exhaust from the vehicle. Warning: Use extreme caution during installation. Torque all fasteners according to manufacturer’s torque values and tightening sequence. DO NOT use air impact tools to tighten fasteners on Borla Performance Exhaust Systems. Use of such tools may result in bent flanges or gasket contact areas leading to exhaust leaks.

4.6L Mustang Bassani Mid Length Headers INSTALLATION INSTRUCTIONS

0

Filed Under (Ford Manuals) by admin on 05-12-2011

download
INSTALLATION INSTRUCTIONS 1. Disconnect the battery. 2. Safely raise & support vehicle to a comfortable working height. (One jack stand at each corner of vehicle.) 3. Spray attaching hardware and base of o2 sensors with WD40 or similar Lubricant. Remove 02 sensors from stock system. (Be careful not to damage or contaminate sensor). Stock gasket will be re-used upon assembly. 4. Remove both connector tubes between stock exhaust manifold and Bassani Modular X pipe. It may be necessary to loosen downstream clamps on the Bassani Modular X pipe. 5. Loosen EGR fitting on drivers side exhaust manifold. It will be necessary to remove nuts from the motor mounts at the K member to jack engine up. Motor mount heat shields have to be removed. 6. Loosen & remove both exhaust manifolds. 2 valve, stock manifold gaskets, depending on condition, may be re-used . Remove studs from both sides. Use supplied, and/or stock hardware. See note following #10. 7. Label wiring on starter and remove it. (Will be necessary for header installation) 8. You may also need to remove oil filter to ease installation and tightening on drivers’ side. 9. IMPORTANT! It will be necessary to unbolt steering shaft from rack. With a marker draw a straight line on shaft down to rack to index them both. Do not move front wheels or steering wheel. 10. It will be necessary to lift engine up enough to slide header tubes in and have access to install supplied header bolts. After loosening motor mount bolts, lifting engine (using a wooden block under oil pan) and removing motor mounts, one side at a time only, will ease installation. Removal of motor mounts is not mandatory. **Anti seize must be applied to all threads (header bolts and studs). It may be necessary to use a combination of header bolts and stock studs & nuts on certain tubes due to clearance between the tube and hardware. ie; stud nut or header bolt. The use of either is the installers preference. 11. Start on passenger side, with tube #1R. Push as far forward as possible to allow clearance for #2R. Once #2R is in position, install gaskets, and header bolts. When this is completed commence installation of #3R and #4R tubes following previous procedure. Leave bolts loose, DO NOT TIGHTEN UNTIL COLLECTOR IS INSTALLED. 12. When Collector R is ready for right side, place Bassani anti seize jet lube , on slip connectors to ease installation. When collector lines up with tab on header tube, fasten them together and tighten all header tubes. 13. When all hardware is properly tightened, lower engine, re-install motor mount hardware, starter and O2 sensors in collector. The use of Bassani anti seize Jet Lube is recommended on O2 sensor threads. Do not to contaminate O2 sensor bulb with lube. 14. Proceed to drivers’ side. Install #1L with gasket installed. Install supplied fasteners with Bassani anti seize jet lube on the threads. DO NOT TIGHTEN ALL THE WAY, leave semi loose. Install tube #3L, then #2L. You will need to experiment with pipes #2L and #3L. #2L will slip between #3L and #1L. Now install #4L, fasten and screw air fitting to tube #4L. Install Collector L . When collector tab lines up with header tab, tighten all hardware, and bolt on EGR, and any smog fittings. Lower engine and re-install motor mount hardware. Reconnect steering shaft using loctite 271 thread locker on bolt.

Related Content:

2002 chevy s10 exhaust flange seal, ebay ford 555 backhoe cheap service manual, replacing choke heater tube in 57 chevy exaust manifold

2001-2008 GM 1500/2500 Series Pick-Up Edelbrock Header Installation Manual

0

Filed Under (GMC Manuals) by admin on 25-02-2012

download
INSTALLATION INSTRUCTIONS DISASSEMBLY 1. Disconnect negative battery cable. 2. Unbolt exhaust pipes from manifolds. RIGHT SIDE 1. Disconnect and remove spark plug wires. 2. Unbolt and remove dipstick tube. 3. Unbolt and remove manifold from top. 4. Install flange gasket and header from top. Install header bolts, lock washers, and thick flat washers supplied. Note: Ensure proper alignment on slotted holes of port flange and only snug bolts at this time. 5. Re-install spark plug wires. 6. Re-install dipstick tube. 7. Some models may require the aluminum heat shield under the A/C receiver dryer to be re-positioned, adjusted or bent to gain some clearance between header and heat shield. LEFT SIDE 1. Disconnect and remove spark plug wires. 2. Unbolt and remove manifold. 3. Install flange gasket and header from top. Install header bolts, lock washers, and thick flat washers supplied, ensure proper alignment and only snug bolts at this time. IMPORTANT NOTE: Proper installation is the responsibility of the installer. Improper installation will void warranty and may result in poor performance and engine or vehicle damage.
©2007 Edelbrock Corporation Catalog #65022 & 65023 Page 2of 2 Brochure #63-0364 Rev. 8/07 – DA/mc Edelbrock Corporation, 2700 California St., Torrance, CA 90503 Tech Line: 1-800-416-8628 Office: 310-781-2222 Tech Fax: 310-972-2730 E-Mail: Edelbrock@Edelbrock.com 2. Using supplied hardware, re-attach the factory exhaust pipes to the headers and tighten bolts evenly to ensure a tight seal. ( Note: The 7/16 x 2 bolts are to be used on 4.8L, 5.3L, & some 6.0L V8s. The 7/16 x 1 ¾ are for the left side of 4.8L & 5.3L V8s, and on the 6.0L V8 that do not have OEdonut gaskets. 3. After the factory exhaust pipes have been tightened to the collector flange of the header, tighten the port flange bolts to recommended factoryspecifications. FINAL INSPECTION 1. Check all lines (hydraulic, vacuum, air conditioning and fuel) to ensure there is adequate clearance to headers. 2. Re-connect battery. 3. At this point, it is a good idea to look everything over and make sure that nothing was missed in assembly. 4. Start vehicle and bring up to normal operating temperature. Check for possible leaks. 5. Turn engine off and let cool. Tighten all bolts again. Note: Thick washers are to be used on slotted holes of port flange. 4. Re-install spark plug wires. Note: Due to production tolerance, it may be necessary to bend the motor mount heat shield for better clearance. ASSEMBLY OF EXHAUST PIPE Note: Some 2007 model year vehicles will have a donut gasket on the right side OE exhaust manifold. If your vehicle has that donut gasket, it will be re-used with your shorty headers (see below). This system comes with 2 exhaust crush rings. On 2001- 2006 4.8L & 5.3L V8s, one will be used on the left side collector. On 2001-2006 6.0L vehicles will use one on the left side and one on the right side to replace factory-installed crush rings. 1. On 4.8L, 5.3L, &6.0L V8s with donut gasket – Remove the donut gasket from right side exhaust manifold. Using a pair of pliers, remove the retaining ring from the donut gasket and place the donut gasket in flare of factory exhaust pipe.

Related Content:

schematics on bleeding the air from cooling system on 02 aurora, snug top wiring, 2001 chevy hd 2500 code p1626, bumper sealer used on a muffler, how to repair exhaust flange leaks on chevy tahoe, what is the diameter of the exhaust pipe for 2001 malibu

2004 Chevrolet TrailBlazer Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Repair Manual

0

Filed Under (Chevrolet Manuals) by admin on 18-02-2012

download
This bulletin is being revised to add model years and provide important repair information. Please discard Corporate Bulletin Number 04-08-49-015 (Section 08 — Body and Accessories). Condition Some customers may comment on a noise coming from the instrument panel cluster (IPC) while driving or on initial start-up. Instrument clusters may contain stepper motor gages that can make noise during the following conditions: Subject: Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Models: 2003-2005 Buick LeSabre 2003-2007 Buick Rendezvous 2004-2005 Buick Rainier 2003-2006 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2005 Chevrolet Cavalier, Impala, Monte Carlo 2003-2006 Chevrolet Avalanche, Suburban, Tahoe, TrailBlazer EXT 2003-2007 Chevrolet Silverado Classic, TrailBlazer 2003-2007 Chevrolet Kodiak Models 2004-2006 Chevrolet SSR 2003-2006 GMC Envoy XL, Yukon, Yukon XL 2004-2005 GMC Envoy XUV 2004-2007 GMC Envoy 2003-2007 GMC Sierra Classic 2003-2004 Oldsmobile Bravada 2003-2005 Pontiac Aztek, Bonneville, Sunfire 2003-2005 HUMMER H2 Attention: Appropriate repair is based on vehicle build date. Use GMVIS to determine the vehicle build date. • Initial startup (gages zero/reset)

Related Content:

2004 buick rendezvous repair manual, service manual for 2004 audi a6 2 7t quattro, 2003 gmc sierra service repair manual, stepper motor for 2004 chevy trailblazer, repair manual mitsubishi diamante, repairing center console for 2005 f150, 2005 gmc envoy repair manual, 2005 gmc sierra 2500 hd replaceing instrument panel, ford 2004 6 0 manual, 2004 chevy malibu wiring diagrams for EVAP system

1991 Subaru Legacy Sedan 4WD Manual Transmission/ Transaxle: Service and Repair Removal

0

Filed Under (Subaru Manuals) by admin on 18-06-2011

download
1. Open front hood and support with a stay. 2. Disconnect battery cables from battery. 3. Remove air intake duct. 4. Remove clutch cable, return spring and hill-holder cable. 5. Disconnect the following: -Oxygen Sensor connector -Crank Angle Sensor connector -Cam Angle Sensor connector -Knock Sensor connector -Transmission Harness connectors -Transmission Ground Terminal 6. Disconnect start connector and terminal and remove the starter assembly. 7. Remove pitching stopper rod. 8. Remove connector holder bracket 9. Set the engine support assembly (927670000). 10. Remove engine to transmission mounting nut and bolt on the upper side. 11. Raise and support car then disconnect the front exhaust pipe from the engine. Note: Remove all nuts except one. This nut is used to temporarily hold the exhaust pipe. 12. Disconnect the front to rear exhaust pipe connection. 13. Disconnect front exhaust pipe at transmission and hanger locations. 14. Remove the nut which was used to temporarily hold the exhaust pipe in step 11 and disconnect the front exhaust pipe. 15. Disconnect rear exhaust pipe from muffler. 16. Remove front cover of rear differential mount. 17. Remove the four bolts which hold the propeller shaft to rear differential. 18. Remove the two bolts which hold the center bearing to the car body.

Related Content:

4t65e transmission repair manual pdf torrent, 91 subaru lsi automatic trans flush, how to rebuild a 4t65e automatic transmission rebuild manual, SUBARU LEGACY GT MANUAL TRANNY?, what is the voltage at the right hand door on a 94 suburu impressa GL

Related Content:

2005 taurus exhaust system diagram, 2 2 s10 exhaust flange bolts, diagram of an exhaust system on a 2003 gmc envoy, Diagram of a exhaust crossover pipe for a 95 Oldsmobile aurora, 04 pacifica parts diagram, pontiac sunfire gt exhaust system diagram, how tight should exhaust, gmc yukon exhaust manifold diagram, 454 exhaust donut installation, 2006 corvette mid pipe flange torque