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2467 posts · Joined 2006. #1 · Oct 12, 2009. These are the GM specific OBD1 DTC codes: GM common codes for OBD1 (for vehicles made before 1995) 12 System normal. 13 oxygen sensor circuit open. 14 coolant sensor high resistance or shorted. 15 coolant sensor circuit low or open. 16 direct ignition system (DIS) fault in circuit.
2008 Silverado 5.3 I'm annoyed with the hesitation when I try to accelerate quickly. No problem most of the time, and if I accelerate slowly, it runs perfectly, smooth as silk. It's just from an idle, typically at a stop light. No codes, Most likely one of two things not enough air (air filter) or not enough fuel.
I cleared the codes and they havent come back on yet. but still getting the 171, and 174 codes. my truck is 03 silverado 1500 4.8L with around 165K miles. the truck runs great at all speeds except at the stop lights, just idles between 500 and 1000 rpm. I gonna try cleaning the mass airflow sensor and see if that helps. anymore suggestions
Two weeks after purchasing this vehicle we began experiencing very hard starts in the morning and then throwing code P0172 and P0175 (rich condition bank 1 and 2). No other engine conditions presented themselves besides this (no rough idle, poor running engine, etc.) I tested the fuel pressure (Key On, wait and running) and all seemed well.
Cleared all codes it resets the IM now it shows 4 highlighted codes, EVAP,CAT,HTR,02S and had no codes I then let it warm up still no codes showed up, drove it around cleared the HTR and CAT NO visible codes on main screen but when i do more diganosis it shows U1300,p0442,p0446,p0455,p0496,p0741,p1153,p1133,p0133,p0153
240 posts · Joined 2008. #1 · May 18, 2013. guys, i have a 1990 k1500 with 5.7 v-8. to clear all check engine light codes, is it enough to just remove the positive battery cable for a few minutes, then reconnect ? i just ready online someone suggest pulling both battery cables, then turning on the inside interior light, to discharge all ...
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canislupis69. 5032 posts · Joined 2008. #2 · Mar 1, 2010. GQ1 means you have a standard rear end with no traction adder. Look for another rpo code in the glove box for the ratio. It usually starts with GU or GT: GU2 2:73 ratio. GU4 3: 08 ratio. GU5 3:23 ratio.
twincharlotte.com. if it actually wont automatically shift out of 1st then I was right with suspecting sensors and plugs... a new pcm would be an absolute last step! 22. Transmission does not shift automatically, only manually. New PCM, check wiring, check other sensors such as VSS and TPS.
Knock Sensor replaced when the cause of code P0332 was a cooling system problem. Knock Sensor replaced when the cause of code P0332 was an EGR system malfunction. P0332 Diagnostic Theory for Shops and Technicians. When diagnosing a P0332 code, it is important to record the freeze frame information and then duplicate the code setting conditions ...