H3 2008 Hummer H3 3.7l base: Reduced Power Mode

[slidster2010]

I have a 2008 Hummer H3 3.7l base model. 2 problems going on, with the reduced power mode. When I stop, goes into reduced power mode. Driving at highway speeds, if I hit a slight bump it goes into reduced power mode. Pulled codes on check engine light, an these are the codes I get.
P0651: 5-V Reference 2 circuit
P0335: Crank Position Sensor Circuit
P2135: TPS 1-2 Correlation
C0240: Powertrain Control Module(PCM) Traction Control not allowed
All 4 wheel drive modes work, I can turn traction control off. It still goes into reduced power mode. Although I haven't tested it in 4Low. Any help would be greatly appreciated.

 

[Mr_Rich]

I have a 2008 Hummer H3 3.7l base model. 2 problems going on, with the reduced power mode. When I stop, goes into reduced power mode. Driving at highway speeds, if I hit a slight bump it goes into reduced power mode. Pulled codes on check engine light, an these are the codes I get.
P0651: 5-V Reference 2 circuit
P0335: Crank Position Sensor Circuit
P2135: TPS 1-2 Correlation
C0240: Powertrain Control Module(PCM) Traction Control not allowed
All 4 wheel drive modes work, I can turn traction control off. It still goes into reduced power mode. Although I haven't tested it in 4Low. Any help would be greatly appreciated.

I posted a year-and-a-half ago concerning the P2135 code.
Those messages were similar to the ones I received although I didn't get hard codes set other than the P2135. The TPS is failing intermittently and because it's integral to the throttle body you have to replace the whole unit. The good news is that it's not too expensive and it's easy to replace. Mine's been good for the last 10K miles since replacement and absolutely no problems since that time.

 

[slidster2010]

They actually sell a tps rebuild kit now. I have never heard of that befor.I will look into that. I appreciate your input.

 

[slidster2010]

Throttle body assembly ordered. ill let you know what happens.

 

[slidster2010]

Thank You for the reply/info Mr_Rich. I replaced the throttle bottle and no issues at all now. Much appreciated!!!