Hummer H2. Manual - part 1419

Fig. 4: PCM Power, Grounding, Serial Data, and MIL Schematics 
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 5: 5 Volt and Low Reference Busses Schematics 
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 6: MAP, ECT, VSS Circuit, and IAT/MAF Schematics 
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 7: HO2S Circuits Schematics 
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2