NHTSA ID Number: 10225246
Manufacturer Communication Number: R28R29
TSB/Document Date: 2022-10-31
Summary
Customer Satisfaction Notification R28/R29 Engine Oil Contamination and Consumption
Service Procedure (Continued)
35. Remove the cowl screen
screws and remove the
cowl screens (Figure 29).
COWL SCREENS
Figure 29 – Cowl Screens
MOUNTING BOLTS
36. Remove the two wiper
motor assembly mounting
bolts and one mounting
nut then remove the wiper
motor assembly
(Figure 30).
37. Disconnect the wiper
motor electrical connector
and remove the wiper
motor assembly.
WIPER
MOTOR
ASSEMBLY
MOUNTING NUT
Figure 30 – Wiper Motor Assembly
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 28
Service Procedure (Continued)
38. Remove the four screws
securing the HVAC air inlet
duct and remove the HVAC air
inlet duct (Figure 31).
SCREWS
HVAC AIR INLET DUCT
39. Disconnect the fuel line
(Figure 32).
Figure 31 – HVAC Air Inlet Duct
40. Disconnect the brake booster
vacuum supply hose at the
intake manifold (Figure 32).
BRAKE BOOSTER VACUUM HOSE
Figure 32 – Fuel Line
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 29
Service Procedure (Continued)
41. Use the following steps to remove the left and right side sill panels.
NOTE: Left side shown, right side typical.
a. Open the door and remove the four fasteners from the sill trim panel
(Figure 33).
b. Raise and support the vehicle.
SILL PANEL FASTENERS
SILL PANEL
Figure 33 - Sill Panel Fasteners
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 30
Service Procedure (Continued)
c. Remove the rear tire and wheel assemblies.
d. Remove the two fasteners to the trunk pan (Figure 34).
e. Remove the two sill trim panel fasteners (Figure 34).
f. Remove the upper fastener from the rear wheelhouse splash shield
(Figure 34).
g. Remove the three rear belly pan fasteners (Figure 34).
UPPER FASTENER
TRUNK PAN
FASTENERS
REAR BELLY
PAN
FASTENERS
SILL TRIM
PANEL
FASTENERS
Figure 34 – Sill Trim Fasteners
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 31
Service Procedure (Continued)
h. Remove the fasteners securing the rear fascia (Figure 35).
i. Route the rear wheelhouse splash shield off of the outer edges.
j. Lower the rear wheelhouse splash shield and route the rear brake air duct
from the rear wheelhouse splash shield.
k. Remove the rear wheelhouse splash shield from the vehicle.
REAR
WHEELHOUSE
SPLASHSHIELD
FASTENERS
Figure 35 – Rear Wheelhouse Splash Shield
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 32
Service Procedure (Continued)
l. Remove and save the two
fasteners securing the sill trim
panel to the quarter panel
(Figure 36).
QUARTER PANEL
FASTENERS
SILL TRIM PANEL
Figure 36 – Sill Trim Panel
FASTENERS
m. Remove and save the seven
fasteners from the bottom sill
trim panel (Figure 37).
SILL TRIM PANEL
Figure 37 – Sill Trim Panel
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 33
Service Procedure (Continued)
n. Mark the location of the front sill fasteners, for proper alignment during
installation the remove and save the three front sill fasteners (Figure 38).
o. Remove and save the three front wheelhouse splash shield to sill fasteners
(Figure 38).
p. Remove and save the fastener from the hood stabilizer bumper (Figure 38).
q. With the help of an assistant, slide the sill trim panel outward and remove
from the vehicle.
42. Raise the vehicle on hoist.
FRONT SILL FASTENERS
SILL FASTENERS
Figure 38 – Front Sill Fasteners
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 34
Service Procedure (Continued)
43. Disconnect the exhaust
system at left and right
exhaust manifolds. Do not
reuse V-band clamps.
STARTER
MOUNTING BOLT
LOCATIONS
STARTER
SOLENOID
ELECTRICAL
CONNECTOR
44. Remove the left and right
catalytic converter support
hanger bracket bolts. Position
the catalytic converters away
from manifolds.
STARTER
POSITIVE
CABLE
NUT
LOCATION
45. Disconnect the starter
solenoid electrical connector
(Figure 39).
46. Remove the starter positive
cable nut and remove the
cable (Figure 39).
STARTER
Figure 39 - Starter
47. Remove the two starter
mounting bolts and remove
the starter (Figure 39).
BOLTS
48. Remove the two bolts
securing the A/C line to the
oil pan (Figure 40).
49. Remove the lower radiator
hose from the engine.
50. Using a suitable jack stand,
support the engine.
A/C LINE
Figure 40 – A/C Line to Oil Pan
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 35
Service Procedure (Continued)
51. Use the following steps to
remove the transmission.
CAUTION: The engine must
be supported by a brace at the
rear of the engine. Do not
allow the engine to rest on the
spark plug and exhaust flange
or damage may occur.
DRIVE SHAFT
BOLTS
NOTE: Mark an installation
reference line across pinion
yoke and drive shaft.
a. Remove and discard the
Figure 41 – Drive Shaft
universal joint bolts and straps
from pinion yoke and slide
propeller shaft yoke out of the transmission. Remove drive shaft (Figure 41).
b. Disengage the clip holding
clutch hydraulic line to the
slave cylinder tube
(Figure 42).
c. Pull the hydraulic coupling
from the slave cylinder tube.
Cover the end of coupler with
suitable cap-plug (Figure 42).
HYDRAULIC
LINE
SLAVE CYLINDER TUBE
Figure 42 – Slave Cylinder
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 36
Service Procedure (Continued)
d. Raise the engine/transmission
slightly with a support stand.
Remove the transmission
crossmember and mounting
bolts/nuts (Figure 43).
NOTE: Do not allow the
engine/transmission assembly
to hang freely.
CROSSMEMBER
BOLTS
BOLTS
BOLTS
e. Slightly lower the
engine/transmission with the
support stand.
NUTS
Figure 43 – Transmission Crossmember
f Remove isolator/shifter handle from the shifter tower with crow-foot wrench.
g. Remove reverse lamp switch, reverse lockout solenoid and skip shift solenoid
harness connectors and retainers from transmission.
h. Position a transmission jack under the transmission.
i. Secure the transmission to the transmission jack using a suitable safety chain.
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 37
Service Procedure (Continued)
j. Remove the four bolts holding the left side of the transmission to the
bellhousing (Figure 44).
k. Remove the four bolts holding the right side of the transmission to the
bellhousing (Figure 44).
l. Slide the transmission back so that the input shaft clears the bellhousing.
m. Disconnect the oxygen sensor electrical connectors from the bellhousing and
position the harness away from the body.
n. Lower the transmission.
52. Remove and save the bellhousing mounting bolts and position the bellhousing
away from the engine. The bellhousing remains in the vehicle (Figure 44).
53. Install suitable support to the rear of the engine and remove the support stand.
BELLHOUSING
BELLHOUSING
MOUNTING
BOLTS
BELLHOUSING
MOUNTING
BOLTS
TRANSMISSION TO BELLHOUSING BOLT LOCATIONS
Figure 44 – Bellhousing Bolts
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 38
Service Procedure (Continued)
54. Disconnect the ground strap from
the right side frame rail
(Figure 45).
RIGHT ASIDE
FRAME RAIL
Figure 45 – Ground Strap
55. Remove the left and right engine
mount to engine mount bracket
nuts (Figure 46).
ENGINE MOUNTING
BRACKET
56. Lower the vehicle.
NUT
LOCATED ON
TOP SIDE OF
ENGINE
MOUNTING
BRACKET
LEFT SIDE
FRAME
RAIL
Figure 46 – Engine Mount Bracket Nuts
(Left Side Shown)
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 39
Service Procedure (Continued)
57. Install the Engine Lifting Bracket,
Rear 10034-2 to the right rear
cylinder head boss (Figure 47).
ENGINE LIFTING
BRACKET
58. Install the Engine Lifting Bracket,
Front 10034-1 to the left front
cylinder head boss (Figure 48).
RIGHT REAR CYLINDER HEAD BOSS
Figure 47 – Right Rear Cylinder Head Boss
ENGINE LIFTING
BRACKET
59. Attach an appropriate chain to the
engine lifting brackets. Remove the
engine with an engine hoist.
60. Continue with Section D. Prepare
NEW Engine Long Block for
Installation.
LEFT FRONT CYLINDER HEAD BOSS
Figure 48 – Left Front Cylinder Head Boss
Customer Satisfaction Notification R28/R29
Engine Oil Contamination and Consumption
Page 40
Service Procedure (Continued)
D. Prepare NEW Engine Long Block for Installation
1. Remove the engine long block from the shipping crate.
2. Transfer the right and left exhaust manifolds from the original engine block
to
the NEW engine long block using NEW exhaust manifold gaskets. Tighten the
attaching fasteners to 21 ft. lbs. (29 N·m).
3. Transfer the spark plug wires from the original engine block to the NEW engine
long block.
4. Transfer the engine harness from the original engine block to the NEW engine
long block.
5. Transfer oil level indicator and tube from the original engine block to the NEW
engine long block. Tighten the attaching fastener securely.
6. Transfer belt tensioner from the original engine block to the NEW engine long
block. Tighten the mounting nut to 30 ft. lbs. (41 N·m).
- 6X better wear protection on critical engine parts than...
- 1.3X better sludge protection than industry standards*
- 3X Stronger against viscosity breakdown than leading full...
- Protection for 10,000 miles between oil changes
- Meets or exceeds the following specifications: API SP/SN...
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TSB/Document ID: R28R29
Replacement Service Bulletin Number:
MFR Communication Date: 2022-08-25
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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