20 Most Recent 2006 GMC Envoy - Page 9 Questions & Answers

Hi I'm Peter, P0601 OBD-II Trouble Code Technical Description

Internal Control Module Memory Check Sum Error What does that mean? Basically that means that there is an interal fault in the Powertrain Control Module (PCM). There have been many reported PCM failures on Chrysler/Dodge products although it is possible for this to happen on any vehicle. In Dodge/Chrysler products, a P0601 trouble code means that a serial communication failed inside the computer at least 6 times. Symptoms Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light. Typically the engine runs fine, gauges work, etc. Causes A code P0601 in most cases means the PCM has gone bad. This is possibly due to a short-circuit inside the PCM. Or, if you disconnect the wires/connector from the PCM while the battery is still connected, that may also cause this code. Possible Solutions With a P0601 OBD-II trouble code, the most common fix is to replace and reprogram the PCM. In a few cases the dealer may be able to reflash the PCM and get it working. But more than likely the PCM will need to be replaced and reprogrammed (we recommend you take it to a dealership for this). The good news is it *may* be covered under your emmissions warranty. So even if you're out of bumper-to-bumper warranty or powertrain warranty, check your warranty guide or dealer to see if this is covered. Other people have reported that they cleared the code only for it to return again and again. Keep in mind that most shops can replace the PCM but not all can program it. Hope this is what you needed. Let me know how you make out.

That is probably the EBCS (ABS Controller)

Fuse #1 in underhood fuse box

Have you checked fuse #48 in rear fuse box and fuse #8 in underhood fuse box?

you need to repair no 1 cyl. misfire it will misfire when engine load is present. if you want to test it .push brake pedal engine running and shift into forward gear and with the other foot raise rpm to 2000rpm you will feel the misfire hope it helps

it is likely the mode actuator.

behind the dash driver side middle top of the air handling system, above the gas pedal.

I would try cleaning the Mass Air flow ,no check engine light?

inspect the female end for any dirt or something inside of it , once you complete that get some WD40 or any other kind of lubricate and spray it directly into the slot of the female end then try the male end this should correct your problem.

Several things to check. circuit board on wiper motor may have moisture and corrosion, ignition start switch may be shorting out. start by checking the wiper motor delay module on the wiper mtor