Page of 5 5//07 009 Chevrolet Silverado 6.6L Eng 3500 HD Service Manual: SYSTEM WIRING DIGRMS - 3500 HD Print Date: 5//07 DISTRIBUTION > 6.6L VIN 6 Fig : 6.6L VIN 6, Power Distribution Circuit ( of 5) ERY ER MOTOR WRECKER (IN ROOF CONSOLE) ROOF FUSIBLE LINK (4 G- RED/) 86 85 87 V WRECKER S ERY 75 75 HOLDER ( SIDE OF FIREWLL) WRECKER ROOF BODY BUILDER GENERTOR V (IN BLOCK JUMPER J09 GLOW PLUG (GPCM) DUL GENERTOR & MBULNCE UPFITTER SLES UXILIRY INTKE IR GENERTOR (IH) TO I/P B TO ROOF J00 I/P B D B C MOBILE BLOCK (V ) (BEHIND G00 (ON FRONT CORNER OF ) (IN BLOCK JUMPER J4 (IN BLOCK JUMPER J J9 (IN BLOCK JUMPER J0 LT GRN LT BLU RED/WHT RED/WHT G03 (ON FRONT OF CYLINDER HED) MOBILE TO STUD 63 C IPC 43 ECM- TCM- 7 HDLP WSH 0 0 36 LTR 50 0 STUD 58 WSHTR 6 ITBC 9 TREC 6 SEO B 34 BLOCK ( MNUL I/P DT LINK CONNECTOR (DLC) SPEED & SPEED SPEED J03 INSTRUMENT PNEL CLUSTER (IPC) 339 BODY (BCM) ENGINE (ECM) TRNSMISSION (TCM) G00 (ON FRONT CORNER OF ) WINDSHIELD WSHER SOLVENT TRNSFER CSE SHIFT TRNSFER CSE ENCODER MOTOR

Page of 5 5//07 Fig : 6.6L VIN 6, Power Distribution Circuit ( of 5) FROM IPC 43 C OF 5) STUD 63 S/ROOF 3 BLWR 65 LBEC 59 ELEC RUN BORD 60 MBEC 64 BS- 56 HEVY DUTY BS 55 BS- 8 D TO LGM 66 BLOCK ( ELECTRICL LRM BULB O 0 SERIES & VCUUM & 0 SERIES O CMPER CMPER O (IN CMPER J44 (EBCM) SUNROOF ROOF BREKER CB3 PWR RER WNDW BREKER CB4 PSS BREKER CB RT DOORS BREKER CB I/P DJUSTER SYSTEM PSSENGER DJUSTER CMPER CONNECTOR SUNROOF BLOWER FROM MOTOR I/P OF 5) ROOF (IN OVERHED WRECKER ROOF CONSOLE) & ROOF ROOF J33 ROOF MOUNTED G00 (ON FRONT CORNER OF ) I/P CTSY RT STOP DIM BCM SIDE 5 TRN OF 8 7 5 COOLED S 4 INDIVIDUL O INDIVIDUL (IN SLIDING RER O JUMPER ( INDIVIDUL INDIVIDUL INDIVIDUL ) J336 J35 INDIVIDUL O INDIVIDUL MIRROR MIRROR MEMORY SLIDING SLIDING PSSENGER PSSENGER PSSENGER PSSENGER RER RER RER DJUSTER LUMBR DJUSTER (MSM) OPEN CLOSE ( I/P BLOCK TO PDM E DSM RER DDM PWR RER RER OBS DET LT DR MIR WPR 0 5 4 BREKER 3 4 3 0 & DECOR LEVEL 3 EXCEPT & DECOR LEVEL 3 INDIVIDUL INDIVIDUL MIRROR O INDIVIDUL MIRROR INDIVIDUL MIRROR O INDIVIDUL MIRROR F TO PDM CLIMTE (IF EQUIPPED) 340 BODY BODY (BCM) REMOTE DOOR LOCK RECEIVER (RCDLR) MEMORY (MSM) OUTSIDE RERVIEW MIRROR RER OBJECT RER ( RER PRKING SSIST)

Page 3 of 5 5//07 Fig 3: 6.6L VIN 6, Power Distribution Circuit (3 of 5) FROM HEVY DUTY BS D 55 LGM 66 4 MP 38 ESC/LC EXH LC/COMP 54 RDO 39 PTO 44 LBEC 67 G TO DLIS 3 BLOCK ( O O & O I/P I/P (IN INSTRUMENT PNEL HRNESS, 9 CM FTER CONNECTOR BREKOUT) J04 (IN PTO JUMPER ( TKE ) J7 H TO BODY HED CURTIN TKE MNUL SENSING & PSSENGER DIGNOSTIC PRESENCE (SDM) SYSTEM (PPS) ROLLOVER UDIO MPLIFIER (PREMIUM UDIO BRNDED MPLIFIER SPEKER SYSTEM) DIGITL RER UDIO (RS) RECEIVER (IF (IF EQUIPPED) EQUIPPED) CHIME TKE (PTO) WINDSHIELD WSHER SOLVENT ( I/P BLOCK UNLOCK LOCK INFO LOCK/UNLOCK LOCKS O INDIVIDUL FRONT & MIRROR CREW CB INDIVIDUL UX RSE PWR 9 5 0 UX PWR 6 0 STOP S IS LPS 7 LT STOP TRN 6 PDM 9 ( 3 & ) FROM LT DR E BREKER ONSTR O RER ENTERTIN- MENT Z3 O UNIVERSL GRGE DOOR OPENER WRECKER, ROOF & ROOF I/P CENTER I/P SIDE OF BODY (BCM) I/P SIDE OF I/P INDIVIDUL MIRROR J4 CUSTOM CONSOLE FRONT COMPT FLOOR I/P F FROM I/P 34 COMMUNICTION INTERFCE (VCIM) VIDEO DISPLY G4 (ON LOWER CENTER "B" CONSOLE PILLR) COMPRTMENT PERFORMNCE ENHNCED UDIO PREMIUM UDIO BRNDED MPLIFIER SPEKER SYSTEM PSSENGER CENTER CONSOLE GRGE DOOR OPENER (GDO) J03 3 G00 EDITION 3 MERCHNDISED (ON FRONT I/P CORNER 3 4 J00 OF 4 D ) X3 X

Page 4 of 5 5//07 Fig 4: 6.6L VIN 6, Power Distribution Circuit (4 of 5) FROM LBEC 67 G DLIS 3 J TO RUN/CRNK 5 OF 5) BLOCK ( TRNSFER CSE SHIFT WINDSHIELD OUTSIDE MOISTURE J (IN COLUMN SPEED SPEED I/P ITION RUN RUN RUN RUN KEY IN ITION (IN COLUMN J3 J08 B5 X0 SPEED 0 SERIES VOLT V BODY (BCM) THEFT DETERRENT (TDM) 4 SPEED, & CRUISE 6 SPEED & DECOR LEVEL INDIVIDUL MIRROR O INDIVIDUL MIRROR H K FROM TO BLOCK BLOCK 5 OF 5) & CRUISE O & CRUISE (IN THE COLUMN J6 I/P SIDE OF V EXCEPT O INDIVIDUL MIRROR (IN INSTRUMENT PNEL J3 O INDIVIDUL MIRROR I/P O COIL TRNSMISSION MNUL SHIFT TRNSMISSION SHIFT LEVER J7 (IN HRNESS, 9 CM FROM COIL X) B 34 FROM MOBILE BLOCK OF 5) RER SLIDING SUNROOF PSSENGER

Page 5 of 5 5//07 Fig 5: 6.6L VIN 6, Power Distribution Circuit (5 of 5) FROM DLIS 3 J 85 86 85 85 86 87 RUN/ CRNK WIPER SPEED RER WSH FUEL PMP CHMSL RER DEFOG TRLR LT STOP/TURN TRLR RT STOP/TURN BCK/UP PRK HI BEM HDLP LO/HID STRTR CMPRSR MISC 40 SEO/LC 5 37-5 ECM- 53 K FROM BODY TKE (IF EQUIPPED) J05 CLIMTE & SPEED I/P END OF G03 (ON FRONT OF CYLINDER HED) ( BLOCK STOP TRNSFER CSE SHIFT SENSING & PSSENGER DIGNOSTIC (SDM) ON/ INDICTOR IR TEMPERTURE I/P DISBLE ( ) IR TEMPERTURE (MNUL ) RECIRCULTION MODE IR TEMPERTURE ( ) ENGINE (ECM) WIPER UX - 45 FRT WPR 33 85 FOG HORN EP 35 85 PWR/TRN SEO B 49 DRL L/GTE TRNS 3 FRT WSH FN 68 FN RLY O (IN BLOCK JUMPER J0 HETED 7.5 INLINE I/P SIDE X9OF COIL COMPSS INSTRUMENT INSIDE ( & PNEL RERVIEW DECOR LEVEL 3 CLUSTER MIRROR (IPC) (ISRVM) ) HETED 343 & PRK ENBLE DJUSTBLE PEDLS (IN SPO THEFT J7 SECURITY INDICTOR INCLINTION I/P SPO LRM TKE (PTO) SHOCK SPEED TRNSFER CSE O SPEED 3 TRNSFER CSE 3 O SPEED MNUL SHIFT TRNSFER CSE & SPEED PUSH BUTTON TRNSFER CSE (IN 4 SPEED MNUL SHIFT ENGINE TRNSFER CSE & SPEED ELECTRIC SHIFT J TRNSFER CSE 3 4 IF EQUI- PPED GLOW PLUG TRNSMISSION FRONT DRIVE (GPCM) (TCM) XLE